/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 14:21:02,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 14:21:02,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 14:21:02,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 14:21:02,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 14:21:02,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 14:21:02,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 14:21:02,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 14:21:02,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 14:21:02,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 14:21:02,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 14:21:02,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 14:21:02,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 14:21:02,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 14:21:02,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 14:21:02,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 14:21:02,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 14:21:02,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 14:21:03,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 14:21:03,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 14:21:03,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 14:21:03,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 14:21:03,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 14:21:03,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 14:21:03,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-12 14:21:03,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 14:21:03,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 14:21:03,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 14:21:03,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 14:21:03,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 14:21:03,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 14:21:03,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 14:21:03,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 14:21:03,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 14:21:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 14:21:03,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 14:21:03,048 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-SemanticLbe.epf [2022-12-12 14:21:03,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 14:21:03,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 14:21:03,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 14:21:03,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 14:21:03,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 14:21:03,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 14:21:03,082 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 14:21:03,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 14:21:03,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 14:21:03,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 14:21:03,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 14:21:03,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 14:21:03,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 14:21:03,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 14:21:03,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 14:21:03,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:21:03,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 14:21:03,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 14:21:03,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 14:21:03,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 14:21:03,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 14:21:03,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 14:21:03,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 14:21:03,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 14:21:03,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 14:21:03,458 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 14:21:03,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2022-12-12 14:21:04,638 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 14:21:04,931 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 14:21:04,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2022-12-12 14:21:04,951 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608e78292/0d751341b74f4f76837ec22a5abe11e4/FLAGa24e12142 [2022-12-12 14:21:04,969 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608e78292/0d751341b74f4f76837ec22a5abe11e4 [2022-12-12 14:21:04,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 14:21:04,974 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 14:21:04,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 14:21:04,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 14:21:04,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 14:21:04,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:21:04" (1/1) ... [2022-12-12 14:21:04,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dd5d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:04, skipping insertion in model container [2022-12-12 14:21:04,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 02:21:04" (1/1) ... [2022-12-12 14:21:04,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 14:21:05,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 14:21:05,250 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 14:21:05,457 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/singleton.i[55547,55560] [2022-12-12 14:21:05,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:21:05,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:21:05,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:21:05,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:21:05,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:21:05,500 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 14:21:05,527 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 14:21:05,552 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/singleton.i[55547,55560] [2022-12-12 14:21:05,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:21:05,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:21:05,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 14:21:05,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 14:21:05,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 14:21:05,645 INFO L208 MainTranslator]: Completed translation [2022-12-12 14:21:05,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05 WrapperNode [2022-12-12 14:21:05,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 14:21:05,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 14:21:05,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 14:21:05,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 14:21:05,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,692 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-12 14:21:05,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 14:21:05,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 14:21:05,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 14:21:05,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 14:21:05,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 14:21:05,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 14:21:05,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 14:21:05,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 14:21:05,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (1/1) ... [2022-12-12 14:21:05,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 14:21:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 14:21:05,772 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) [2022-12-12 14:21:05,783 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 [2022-12-12 14:21:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 14:21:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 14:21:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 14:21:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 14:21:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 14:21:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-12 14:21:05,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-12 14:21:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 14:21:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 14:21:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 14:21:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 14:21:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 14:21:05,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 14:21:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 14:21:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 14:21:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 14:21:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 14:21:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 14:21:05,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 14:21:05,817 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 14:21:06,018 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 14:21:06,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 14:21:06,208 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 14:21:06,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 14:21:06,214 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 14:21:06,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:21:06 BoogieIcfgContainer [2022-12-12 14:21:06,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 14:21:06,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 14:21:06,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 14:21:06,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 14:21:06,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 02:21:04" (1/3) ... [2022-12-12 14:21:06,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc5d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:21:06, skipping insertion in model container [2022-12-12 14:21:06,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 02:21:05" (2/3) ... [2022-12-12 14:21:06,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc5d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 02:21:06, skipping insertion in model container [2022-12-12 14:21:06,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 02:21:06" (3/3) ... [2022-12-12 14:21:06,226 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-12-12 14:21:06,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 14:21:06,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 14:21:06,244 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 14:21:06,417 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-12-12 14:21:06,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 188 transitions, 483 flow [2022-12-12 14:21:06,544 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-12-12 14:21:06,544 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 14:21:06,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 125 events. 6/125 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-12 14:21:06,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 188 transitions, 483 flow [2022-12-12 14:21:06,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 116 transitions, 283 flow [2022-12-12 14:21:06,559 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 14:21:06,578 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 116 transitions, 283 flow [2022-12-12 14:21:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 116 transitions, 283 flow [2022-12-12 14:21:06,622 INFO L130 PetriNetUnfolder]: 5/116 cut-off events. [2022-12-12 14:21:06,623 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 14:21:06,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 116 events. 5/116 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-12 14:21:06,628 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 116 transitions, 283 flow [2022-12-12 14:21:06,628 INFO L226 LiptonReduction]: Number of co-enabled transitions 1344 [2022-12-12 14:21:09,352 INFO L241 LiptonReduction]: Total number of compositions: 80 [2022-12-12 14:21:09,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 14:21:09,379 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=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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d50b099, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 14:21:09,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-12 14:21:09,391 INFO L130 PetriNetUnfolder]: 5/35 cut-off events. [2022-12-12 14:21:09,391 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 14:21:09,391 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:09,392 INFO L214 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] [2022-12-12 14:21:09,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-12 14:21:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1320876981, now seen corresponding path program 1 times [2022-12-12 14:21:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:09,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537751030] [2022-12-12 14:21:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:09,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 14:21:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 14:21:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 14:21:10,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537751030] [2022-12-12 14:21:10,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537751030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 14:21:10,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 14:21:10,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 14:21:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213829978] [2022-12-12 14:21:10,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 14:21:10,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 14:21:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 14:21:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 14:21:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 14:21:10,048 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 36 [2022-12-12 14:21:10,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 123 flow. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:10,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 14:21:10,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 36 [2022-12-12 14:21:10,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 14:21:10,248 INFO L130 PetriNetUnfolder]: 582/904 cut-off events. [2022-12-12 14:21:10,248 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-12 14:21:10,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 904 events. 582/904 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3027 event pairs, 172 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 2014. Up to 523 conditions per place. [2022-12-12 14:21:10,254 INFO L137 encePairwiseOnDemand]: 28/36 looper letters, 43 selfloop transitions, 7 changer transitions 11/61 dead transitions. [2022-12-12 14:21:10,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 331 flow [2022-12-12 14:21:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 14:21:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 14:21:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2022-12-12 14:21:10,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2022-12-12 14:21:10,266 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 123 flow. Second operand 3 states and 62 transitions. [2022-12-12 14:21:10,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 331 flow [2022-12-12 14:21:10,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-12 14:21:10,274 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 143 flow [2022-12-12 14:21:10,276 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2022-12-12 14:21:10,279 INFO L295 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2022-12-12 14:21:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 143 flow [2022-12-12 14:21:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 14:21:10,279 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 14:21:10,279 INFO L214 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] [2022-12-12 14:21:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 14:21:10,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-12 14:21:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 14:21:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1290810545, now seen corresponding path program 2 times [2022-12-12 14:21:10,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 14:21:10,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919535158] [2022-12-12 14:21:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 14:21:10,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 14:21:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 14:21:10,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 14:21:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 14:21:10,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 14:21:10,422 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 14:21:10,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-12-12 14:21:10,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2022-12-12 14:21:10,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2022-12-12 14:21:10,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2022-12-12 14:21:10,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-12-12 14:21:10,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-12-12 14:21:10,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-12-12 14:21:10,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-12-12 14:21:10,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-12 14:21:10,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-12 14:21:10,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-12 14:21:10,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-12 14:21:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 14:21:10,427 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-12 14:21:10,431 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 14:21:10,432 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 14:21:10,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 02:21:10 BasicIcfg [2022-12-12 14:21:10,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 14:21:10,494 INFO L158 Benchmark]: Toolchain (without parser) took 5520.56ms. Allocated memory was 220.2MB in the beginning and 309.3MB in the end (delta: 89.1MB). Free memory was 184.1MB in the beginning and 220.6MB in the end (delta: -36.5MB). Peak memory consumption was 53.1MB. Max. memory is 8.0GB. [2022-12-12 14:21:10,495 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 198.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:21:10,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.81ms. Allocated memory is still 220.2MB. Free memory was 184.1MB in the beginning and 150.5MB in the end (delta: 33.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-12-12 14:21:10,495 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.27ms. Allocated memory is still 220.2MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:21:10,496 INFO L158 Benchmark]: Boogie Preprocessor took 34.24ms. Allocated memory is still 220.2MB. Free memory was 148.4MB in the beginning and 146.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 14:21:10,496 INFO L158 Benchmark]: RCFGBuilder took 488.55ms. Allocated memory is still 220.2MB. Free memory was 146.3MB in the beginning and 130.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 14:21:10,497 INFO L158 Benchmark]: TraceAbstraction took 4275.30ms. Allocated memory was 220.2MB in the beginning and 309.3MB in the end (delta: 89.1MB). Free memory was 129.5MB in the beginning and 220.6MB in the end (delta: -91.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 14:21:10,499 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 220.2MB. Free memory is still 198.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 669.81ms. Allocated memory is still 220.2MB. Free memory was 184.1MB in the beginning and 150.5MB in the end (delta: 33.6MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.27ms. Allocated memory is still 220.2MB. Free memory was 150.5MB in the beginning and 148.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.24ms. Allocated memory is still 220.2MB. Free memory was 148.4MB in the beginning and 146.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 488.55ms. Allocated memory is still 220.2MB. Free memory was 146.3MB in the beginning and 130.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4275.30ms. Allocated memory was 220.2MB in the beginning and 309.3MB in the end (delta: 89.1MB). Free memory was 129.5MB in the beginning and 220.6MB in the end (delta: -91.1MB). 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: 2.7s, 130 PlacesBefore, 50 PlacesAfterwards, 116 TransitionsBefore, 36 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 61 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 607, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 613, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 613, independent: 606, independent conditional: 0, independent unconditional: 606, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 613, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 613, unknown conditional: 0, unknown unconditional: 613] , Statistics on independence cache: Total cache size (in pairs): 909, Positive cache size: 903, Positive conditional cache size: 0, Positive unconditional cache size: 903, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 1123]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, pthread_create(&t, 0, thread0, 0)=-2, t={8:0}, v={0:0}] [L1163] 0 \read(t) VAL [\read(t)=-2, arg={0:0}, t={8:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={0:0}] [L1148] 1 \read(t1) VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t3, 0, thread3, 0)=1, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=2, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1133] 3 v[0] = 'X' [L1135] 3 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t5, 0, thread2, 0)=3, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1153] 1 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1133] 5 v[0] = 'X' [L1135] 5 return 0; [L1133] 6 v[0] = 'X' [L1135] 6 return 0; [L1153] FCALL, JOIN 3 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}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1154] 1 \read(t3) VAL [\read(t3)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1140] 4 v[0] = 'Y' [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=1, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1155] 1 \read(t4) VAL [\read(t4)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1156] 1 \read(t5) VAL [\read(t5)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={11:0}, t2={10:0}, t3={7:0}, t4={9:0}, t5={13:0}, v={5:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\read(t)=-2, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={8:0}, v={5:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression [L1123] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, v={5:0}] - UnprovableResult [Line: 1149]: 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: 1147]: 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: 1151]: 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: 1150]: 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: 1152]: 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: 1162]: 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: 1150]: 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: 1147]: 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: 1151]: 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: 1149]: 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: 1152]: 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 11 procedures, 218 locations, 12 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: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-12-12 14:21:10,521 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...