/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 00:56:46,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 00:56:46,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 00:56:46,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 00:56:46,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 00:56:46,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 00:56:46,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 00:56:46,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 00:56:46,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 00:56:46,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 00:56:46,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 00:56:46,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 00:56:46,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 00:56:46,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 00:56:46,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 00:56:46,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 00:56:46,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 00:56:46,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 00:56:46,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 00:56:46,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 00:56:46,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 00:56:46,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 00:56:46,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 00:56:46,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 00:56:46,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 00:56:46,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 00:56:46,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 00:56:46,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 00:56:46,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 00:56:46,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 00:56:46,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 00:56:46,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 00:56:46,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 00:56:46,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 00:56:46,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 00:56:46,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 00:56:46,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 00:56:46,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 00:56:46,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 00:56:46,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 00:56:46,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 00:56:46,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2022-12-06 00:56:46,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 00:56:46,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 00:56:46,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 00:56:46,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 00:56:46,798 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 00:56:46,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 00:56:46,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 00:56:46,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 00:56:46,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 00:56:46,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 00:56:46,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 00:56:46,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 00:56:46,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 00:56:46,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 00:56:46,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 00:56:46,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 00:56:46,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 00:56:46,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 00:56:46,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 00:56:47,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 00:56:47,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 00:56:47,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 00:56:47,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 00:56:47,142 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 00:56:47,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-06 00:56:48,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 00:56:48,633 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 00:56:48,633 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-06 00:56:48,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5dde4cc8/196b9b03819f4b188222c115b0fd548d/FLAG7d4a69781 [2022-12-06 00:56:48,682 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5dde4cc8/196b9b03819f4b188222c115b0fd548d [2022-12-06 00:56:48,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 00:56:48,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 00:56:48,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 00:56:48,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 00:56:48,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 00:56:48,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:56:48" (1/1) ... [2022-12-06 00:56:48,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbff606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:48, skipping insertion in model container [2022-12-06 00:56:48,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 12:56:48" (1/1) ... [2022-12-06 00:56:48,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 00:56:48,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 00:56:49,080 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-06 00:56:49,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 00:56:49,095 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 00:56:49,140 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-06 00:56:49,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 00:56:49,184 INFO L208 MainTranslator]: Completed translation [2022-12-06 00:56:49,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49 WrapperNode [2022-12-06 00:56:49,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 00:56:49,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 00:56:49,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 00:56:49,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 00:56:49,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,222 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-06 00:56:49,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 00:56:49,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 00:56:49,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 00:56:49,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 00:56:49,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 00:56:49,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 00:56:49,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 00:56:49,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 00:56:49,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (1/1) ... [2022-12-06 00:56:49,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 00:56:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 00:56:49,281 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) [2022-12-06 00:56:49,291 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 [2022-12-06 00:56:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 00:56:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 00:56:49,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 00:56:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 00:56:49,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 00:56:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 00:56:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 00:56:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 00:56:49,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 00:56:49,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 00:56:49,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 00:56:49,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 00:56:49,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 00:56:49,324 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 00:56:49,502 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 00:56:49,504 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 00:56:49,661 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 00:56:49,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 00:56:49,668 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 00:56:49,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:56:49 BoogieIcfgContainer [2022-12-06 00:56:49,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 00:56:49,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 00:56:49,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 00:56:49,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 00:56:49,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 12:56:48" (1/3) ... [2022-12-06 00:56:49,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad5f9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 12:56:49, skipping insertion in model container [2022-12-06 00:56:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 12:56:49" (2/3) ... [2022-12-06 00:56:49,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad5f9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 12:56:49, skipping insertion in model container [2022-12-06 00:56:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 12:56:49" (3/3) ... [2022-12-06 00:56:49,676 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-06 00:56:49,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 00:56:49,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 00:56:49,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 00:56:49,757 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 00:56:49,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2022-12-06 00:56:49,841 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-12-06 00:56:49,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 00:56:49,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-12-06 00:56:49,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2022-12-06 00:56:49,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2022-12-06 00:56:49,849 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 00:56:49,866 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 166 flow [2022-12-06 00:56:49,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 166 flow [2022-12-06 00:56:49,898 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-12-06 00:56:49,898 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 00:56:49,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 0/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-06 00:56:49,905 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 166 flow [2022-12-06 00:56:49,905 INFO L188 LiptonReduction]: Number of co-enabled transitions 732 [2022-12-06 00:56:54,040 INFO L203 LiptonReduction]: Total number of compositions: 54 [2022-12-06 00:56:54,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 00:56:54,067 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5713649d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 00:56:54,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 00:56:54,080 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-06 00:56:54,081 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 00:56:54,081 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 00:56:54,082 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 00:56:54,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 00:56:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 00:56:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1235596550, now seen corresponding path program 1 times [2022-12-06 00:56:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 00:56:54,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573676766] [2022-12-06 00:56:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 00:56:54,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 00:56:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 00:56:54,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-06 00:56:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-06 00:56:54,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-06 00:56:54,326 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-06 00:56:54,327 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 00:56:54,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 00:56:54,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 00:56:54,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 00:56:54,329 INFO L458 BasicCegarLoop]: Path program histogram: [1] [2022-12-06 00:56:54,334 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 00:56:54,334 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 00:56:54,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 12:56:54 BasicIcfg [2022-12-06 00:56:54,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 00:56:54,374 INFO L158 Benchmark]: Toolchain (without parser) took 5687.59ms. Allocated memory was 190.8MB in the beginning and 261.1MB in the end (delta: 70.3MB). Free memory was 165.4MB in the beginning and 100.2MB in the end (delta: 65.2MB). Peak memory consumption was 136.9MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,374 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 167.2MB in the beginning and 167.1MB in the end (delta: 91.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 00:56:54,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.77ms. Allocated memory is still 190.8MB. Free memory was 165.4MB in the beginning and 145.8MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.38ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,376 INFO L158 Benchmark]: Boogie Preprocessor took 20.69ms. Allocated memory is still 190.8MB. Free memory was 143.7MB in the beginning and 142.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,376 INFO L158 Benchmark]: RCFGBuilder took 425.16ms. Allocated memory is still 190.8MB. Free memory was 142.2MB in the beginning and 127.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,377 INFO L158 Benchmark]: TraceAbstraction took 4701.54ms. Allocated memory was 190.8MB in the beginning and 261.1MB in the end (delta: 70.3MB). Free memory was 127.0MB in the beginning and 100.2MB in the end (delta: 26.8MB). Peak memory consumption was 98.1MB. Max. memory is 8.0GB. [2022-12-06 00:56:54,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 167.2MB in the beginning and 167.1MB in the end (delta: 91.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 491.77ms. Allocated memory is still 190.8MB. Free memory was 165.4MB in the beginning and 145.8MB in the end (delta: 19.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.38ms. Allocated memory is still 190.8MB. Free memory was 145.8MB in the beginning and 143.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.69ms. Allocated memory is still 190.8MB. Free memory was 143.7MB in the beginning and 142.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 425.16ms. Allocated memory is still 190.8MB. Free memory was 142.2MB in the beginning and 127.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4701.54ms. Allocated memory was 190.8MB in the beginning and 261.1MB in the end (delta: 70.3MB). Free memory was 127.0MB in the beginning and 100.2MB in the end (delta: 26.8MB). Peak memory consumption was 98.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 19 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 546, independent unconditional: 0, dependent: 57, dependent conditional: 57, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 464, independent: 435, independent conditional: 0, independent unconditional: 435, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 464, independent: 415, independent conditional: 0, independent unconditional: 415, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 103, independent: 44, independent conditional: 0, independent unconditional: 44, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 603, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 464, unknown conditional: 0, unknown unconditional: 464] , Statistics on independence cache: Total cache size (in pairs): 595, Positive cache size: 566, Positive conditional cache size: 0, Positive unconditional cache size: 566, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L697] 1 data1++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L700] 1 data2++ [L702] 1 return 0; [L723] 0 \read(t1) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-06 00:56:54,401 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...