/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:52:41,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:52:41,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:52:41,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 23:52:41,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:52:41,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:52:41,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:52:41,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:52:41,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:52:41,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:52:41,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:52:41,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:52:41,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:52:41,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:52:41,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:52:41,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:52:41,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:52:41,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:52:41,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:52:41,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:52:41,807 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-VariableLbe.epf [2023-01-27 23:52:41,833 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:52:41,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:52:41,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:52:41,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:52:41,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:52:41,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:52:41,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:52:41,836 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:52:41,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:52:41,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:52:41,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:52:41,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:52:41,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:52:41,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:52:41,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:52:41,838 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:52:42,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:52:42,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:52:42,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:52:42,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:52:42,083 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:52:42,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-01-27 23:52:43,203 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:52:43,412 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:52:43,413 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-01-27 23:52:43,428 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e4821da/e2959f3048c14356ad93fe777a217333/FLAG45b744058 [2023-01-27 23:52:43,441 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e4821da/e2959f3048c14356ad93fe777a217333 [2023-01-27 23:52:43,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:52:43,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:52:43,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:52:43,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:52:43,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:52:43,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:43,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cb893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43, skipping insertion in model container [2023-01-27 23:52:43,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:43,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:52:43,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:52:43,833 WARN L247 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] [2023-01-27 23:52:43,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:52:43,851 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:52:43,896 WARN L247 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] [2023-01-27 23:52:43,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:52:43,935 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:52:43,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43 WrapperNode [2023-01-27 23:52:43,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:52:43,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:52:43,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:52:43,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:52:43,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:43,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:43,994 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-01-27 23:52:43,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:52:43,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:52:43,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:52:43,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:52:44,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:52:44,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:52:44,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:52:44,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:52:44,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (1/1) ... [2023-01-27 23:52:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:52:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:44,072 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) [2023-01-27 23:52:44,091 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 [2023-01-27 23:52:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:52:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:52:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:52:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:52:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:52:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:52:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:52:44,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:52:44,267 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:52:44,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:52:44,488 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:52:44,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:52:44,495 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 23:52:44,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:52:44 BoogieIcfgContainer [2023-01-27 23:52:44,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:52:44,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:52:44,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:52:44,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:52:44,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:52:43" (1/3) ... [2023-01-27 23:52:44,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b90aa80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:52:44, skipping insertion in model container [2023-01-27 23:52:44,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:43" (2/3) ... [2023-01-27 23:52:44,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b90aa80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:52:44, skipping insertion in model container [2023-01-27 23:52:44,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:52:44" (3/3) ... [2023-01-27 23:52:44,516 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-01-27 23:52:44,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:52:44,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:52:44,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:52:44,621 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:52:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2023-01-27 23:52:44,707 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2023-01-27 23:52:44,708 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:52:44,710 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. [2023-01-27 23:52:44,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2023-01-27 23:52:44,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2023-01-27 23:52:44,716 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:52:44,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 166 flow [2023-01-27 23:52:44,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 166 flow [2023-01-27 23:52:44,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 166 flow [2023-01-27 23:52:44,746 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2023-01-27 23:52:44,746 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:52:44,746 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. [2023-01-27 23:52:44,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2023-01-27 23:52:47,373 INFO L134 LiptonReduction]: Checked pairs total: 2433 [2023-01-27 23:52:47,373 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-01-27 23:52:47,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:52:47,389 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;@4a3125d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:52:47,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:52:47,395 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-01-27 23:52:47,395 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:52:47,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:47,396 INFO L208 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] [2023-01-27 23:52:47,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:52:47,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1212926621, now seen corresponding path program 1 times [2023-01-27 23:52:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:47,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658061421] [2023-01-27 23:52:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 23:52:47,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 23:52:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 23:52:47,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 23:52:47,686 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 23:52:47,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:52:47,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:52:47,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:52:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:52:47,695 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-27 23:52:47,700 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:52:47,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:52:47,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:52:47 BasicIcfg [2023-01-27 23:52:47,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:52:47,742 INFO L158 Benchmark]: Toolchain (without parser) took 4297.10ms. Allocated memory is still 499.1MB. Free memory was 450.1MB in the beginning and 377.5MB in the end (delta: 72.6MB). Peak memory consumption was 74.4MB. Max. memory is 16.0GB. [2023-01-27 23:52:47,744 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 299.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:52:47,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.77ms. Allocated memory is still 499.1MB. Free memory was 450.1MB in the beginning and 430.6MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:52:47,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.79ms. Allocated memory is still 499.1MB. Free memory was 430.6MB in the beginning and 428.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:52:47,745 INFO L158 Benchmark]: Boogie Preprocessor took 39.20ms. Allocated memory is still 499.1MB. Free memory was 428.5MB in the beginning and 427.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:52:47,745 INFO L158 Benchmark]: RCFGBuilder took 462.28ms. Allocated memory is still 499.1MB. Free memory was 427.1MB in the beginning and 412.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 23:52:47,746 INFO L158 Benchmark]: TraceAbstraction took 3242.56ms. Allocated memory is still 499.1MB. Free memory was 412.1MB in the beginning and 377.5MB in the end (delta: 34.6MB). Peak memory consumption was 36.7MB. Max. memory is 16.0GB. [2023-01-27 23:52:47,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 299.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 487.77ms. Allocated memory is still 499.1MB. Free memory was 450.1MB in the beginning and 430.6MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.79ms. Allocated memory is still 499.1MB. Free memory was 430.6MB in the beginning and 428.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.20ms. Allocated memory is still 499.1MB. Free memory was 428.5MB in the beginning and 427.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 462.28ms. Allocated memory is still 499.1MB. Free memory was 427.1MB in the beginning and 412.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3242.56ms. Allocated memory is still 499.1MB. Free memory was 412.1MB in the beginning and 377.5MB in the end (delta: 34.6MB). Peak memory consumption was 36.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, 2433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1335, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 373, independent: 348, independent conditional: 0, independent unconditional: 348, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1335, independent: 822, independent conditional: 0, independent unconditional: 822, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 373, unknown conditional: 0, unknown unconditional: 373] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; [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: 3.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, 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! [2023-01-27 23:52:47,773 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...