./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:08:00,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:08:00,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:08:00,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:08:00,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:08:00,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:08:00,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:08:00,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:08:00,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:08:00,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:08:00,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:08:00,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:08:00,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:08:00,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:08:00,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:08:00,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:08:00,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:08:00,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:08:00,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:08:00,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:08:00,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:08:00,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:08:00,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:08:00,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:08:00,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:08:00,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:08:00,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:08:00,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:08:00,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:08:00,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:08:00,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:08:00,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:08:00,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:08:00,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:08:00,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:08:00,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:08:00,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:08:00,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:08:00,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:08:00,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:08:00,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:08:00,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:08:01,018 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:08:01,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:08:01,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:08:01,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:08:01,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:08:01,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:08:01,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:08:01,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:08:01,021 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:08:01,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:08:01,022 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:08:01,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:08:01,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:08:01,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:08:01,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:08:01,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:08:01,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:08:01,024 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:08:01,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:08:01,024 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:08:01,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:08:01,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:08:01,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:08:01,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:08:01,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:08:01,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:08:01,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:08:01,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:08:01,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:08:01,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:08:01,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:08:01,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:08:01,027 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:08:01,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:08:01,027 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:08:01,027 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:08:01,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:08:01,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:08:01,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:08:01,357 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:08:01,358 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:08:01,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-30 16:08:02,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:08:02,833 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:08:02,838 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-30 16:08:02,849 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d86035a1a/cc5b29daa7da4cd1b752165cb25942a9/FLAG1211e07c4 [2023-08-30 16:08:02,863 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d86035a1a/cc5b29daa7da4cd1b752165cb25942a9 [2023-08-30 16:08:02,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:08:02,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:08:02,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:08:02,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:08:02,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:08:02,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5e1588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02, skipping insertion in model container [2023-08-30 16:08:02,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:08:02,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:08:03,245 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/lazy01.i[31042,31055] [2023-08-30 16:08:03,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:08:03,268 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:08:03,310 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/lazy01.i[31042,31055] [2023-08-30 16:08:03,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:08:03,362 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:08:03,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03 WrapperNode [2023-08-30 16:08:03,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:08:03,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:08:03,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:08:03,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:08:03,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,424 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-08-30 16:08:03,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:08:03,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:08:03,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:08:03,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:08:03,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:08:03,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:08:03,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:08:03,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:08:03,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (1/1) ... [2023-08-30 16:08:03,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:08:03,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:03,484 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) [2023-08-30 16:08:03,543 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 [2023-08-30 16:08:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:08:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 16:08:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 16:08:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 16:08:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 16:08:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 16:08:03,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:08:03,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:08:03,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:08:03,571 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:08:03,724 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:08:03,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:08:03,920 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:08:03,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:08:03,927 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:08:03,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03 BoogieIcfgContainer [2023-08-30 16:08:03,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:08:03,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:08:03,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:08:03,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:08:03,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:08:02" (1/3) ... [2023-08-30 16:08:03,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3469d5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:08:03, skipping insertion in model container [2023-08-30 16:08:03,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:03" (2/3) ... [2023-08-30 16:08:03,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3469d5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:08:03, skipping insertion in model container [2023-08-30 16:08:03,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03" (3/3) ... [2023-08-30 16:08:03,935 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-30 16:08:03,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:08:03,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:08:03,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:08:03,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:08:04,031 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 16:08:04,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 87 transitions, 198 flow [2023-08-30 16:08:04,143 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2023-08-30 16:08:04,144 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 16:08:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 1/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 16:08:04,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 87 transitions, 198 flow [2023-08-30 16:08:04,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 149 flow [2023-08-30 16:08:04,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:08:04,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-30 16:08:04,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-30 16:08:04,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 67 transitions, 149 flow [2023-08-30 16:08:04,198 INFO L130 PetriNetUnfolder]: 0/67 cut-off events. [2023-08-30 16:08:04,199 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:08:04,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 67 events. 0/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 16:08:04,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 814 [2023-08-30 16:08:06,538 INFO L134 LiptonReduction]: Checked pairs total: 1727 [2023-08-30 16:08:06,539 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-30 16:08:06,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:08:06,556 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56ef9f9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:08:06,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:08:06,561 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 16:08:06,561 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:08:06,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:06,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:06,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:08:06,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -265877263, now seen corresponding path program 1 times [2023-08-30 16:08:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101023865] [2023-08-30 16:08:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:06,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101023865] [2023-08-30 16:08:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101023865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:06,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:06,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:08:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321704008] [2023-08-30 16:08:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:06,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:08:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:08:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:08:06,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 134 [2023-08-30 16:08:06,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-08-30 16:08:06,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:06,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 134 [2023-08-30 16:08:06,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:06,928 INFO L130 PetriNetUnfolder]: 285/474 cut-off events. [2023-08-30 16:08:06,928 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 16:08:06,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 474 events. 285/474 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1667 event pairs, 103 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 858. Up to 385 conditions per place. [2023-08-30 16:08:06,933 INFO L137 encePairwiseOnDemand]: 130/134 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-30 16:08:06,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 145 flow [2023-08-30 16:08:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:08:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:08:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-30 16:08:06,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6393034825870647 [2023-08-30 16:08:06,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-30 16:08:06,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-30 16:08:06,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:06,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-30 16:08:06,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2023-08-30 16:08:06,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2023-08-30 16:08:06,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2023-08-30 16:08:06,956 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 55 flow. Second operand 3 states and 257 transitions. [2023-08-30 16:08:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 145 flow [2023-08-30 16:08:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 133 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 16:08:06,960 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 65 flow [2023-08-30 16:08:06,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 16:08:06,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-30 16:08:06,965 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 65 flow [2023-08-30 16:08:06,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-08-30 16:08:06,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:06,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:08:06,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:08:06,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2006927370, now seen corresponding path program 1 times [2023-08-30 16:08:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452102509] [2023-08-30 16:08:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:07,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452102509] [2023-08-30 16:08:07,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452102509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:07,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:07,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:08:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519344810] [2023-08-30 16:08:07,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:07,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:08:07,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:07,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:08:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:08:07,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 134 [2023-08-30 16:08:07,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2023-08-30 16:08:07,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:07,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 134 [2023-08-30 16:08:07,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:07,233 INFO L130 PetriNetUnfolder]: 68/171 cut-off events. [2023-08-30 16:08:07,234 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 16:08:07,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 171 events. 68/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 634 event pairs, 13 based on Foata normal form. 50/221 useless extension candidates. Maximal degree in co-relation 166. Up to 117 conditions per place. [2023-08-30 16:08:07,236 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-30 16:08:07,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 146 flow [2023-08-30 16:08:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:08:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:08:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 16:08:07,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069651741293532 [2023-08-30 16:08:07,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 16:08:07,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 16:08:07,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:07,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 16:08:07,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-08-30 16:08:07,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2023-08-30 16:08:07,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2023-08-30 16:08:07,242 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 65 flow. Second operand 3 states and 244 transitions. [2023-08-30 16:08:07,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 146 flow [2023-08-30 16:08:07,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:08:07,245 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2023-08-30 16:08:07,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-30 16:08:07,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-30 16:08:07,246 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2023-08-30 16:08:07,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2023-08-30 16:08:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:08:07,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:08:07,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 202521017, now seen corresponding path program 1 times [2023-08-30 16:08:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835309747] [2023-08-30 16:08:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:07,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835309747] [2023-08-30 16:08:07,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835309747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:07,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:07,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:08:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282356212] [2023-08-30 16:08:07,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:07,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:08:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:08:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:08:07,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 134 [2023-08-30 16:08:07,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-30 16:08:07,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:07,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 134 [2023-08-30 16:08:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:07,405 INFO L130 PetriNetUnfolder]: 75/176 cut-off events. [2023-08-30 16:08:07,405 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-30 16:08:07,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 176 events. 75/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 32 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 172. Up to 107 conditions per place. [2023-08-30 16:08:07,407 INFO L137 encePairwiseOnDemand]: 130/134 looper letters, 30 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-30 16:08:07,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 187 flow [2023-08-30 16:08:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:08:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:08:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-30 16:08:07,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.621268656716418 [2023-08-30 16:08:07,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-30 16:08:07,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-30 16:08:07,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:07,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-30 16:08:07,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 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) [2023-08-30 16:08:07,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2023-08-30 16:08:07,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2023-08-30 16:08:07,413 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 4 states and 333 transitions. [2023-08-30 16:08:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 187 flow [2023-08-30 16:08:07,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:08:07,415 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 79 flow [2023-08-30 16:08:07,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 16:08:07,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-30 16:08:07,416 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 79 flow [2023-08-30 16:08:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2023-08-30 16:08:07,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:07,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:07,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:08:07,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:08:07,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash -797098962, now seen corresponding path program 1 times [2023-08-30 16:08:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:07,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766798968] [2023-08-30 16:08:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766798968] [2023-08-30 16:08:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766798968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:08:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974678613] [2023-08-30 16:08:07,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:08:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:08:07,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:08:07,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-08-30 16:08:07,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-30 16:08:07,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:07,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-08-30 16:08:07,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:07,599 INFO L130 PetriNetUnfolder]: 72/169 cut-off events. [2023-08-30 16:08:07,599 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 16:08:07,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 169 events. 72/169 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 17 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 288. Up to 89 conditions per place. [2023-08-30 16:08:07,602 INFO L137 encePairwiseOnDemand]: 129/134 looper letters, 36 selfloop transitions, 5 changer transitions 2/43 dead transitions. [2023-08-30 16:08:07,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2023-08-30 16:08:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:08:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:08:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-08-30 16:08:07,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104477611940299 [2023-08-30 16:08:07,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-08-30 16:08:07,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-08-30 16:08:07,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:07,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-08-30 16:08:07,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 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) [2023-08-30 16:08:07,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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) [2023-08-30 16:08:07,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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) [2023-08-30 16:08:07,614 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 79 flow. Second operand 5 states and 409 transitions. [2023-08-30 16:08:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2023-08-30 16:08:07,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 16:08:07,617 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 92 flow [2023-08-30 16:08:07,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-30 16:08:07,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-30 16:08:07,619 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 92 flow [2023-08-30 16:08:07,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-30 16:08:07,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:07,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:07,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:08:07,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:08:07,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1877937628, now seen corresponding path program 1 times [2023-08-30 16:08:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:07,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821396408] [2023-08-30 16:08:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:07,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:08:07,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 16:08:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:08:07,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 16:08:07,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 16:08:07,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:08:07,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 16:08:07,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 16:08:07,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 16:08:07,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-30 16:08:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:08:07,719 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 16:08:07,726 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:08:07,726 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:08:07,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:08:07 BasicIcfg [2023-08-30 16:08:07,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:08:07,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:08:07,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:08:07,776 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:08:07,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03" (3/4) ... [2023-08-30 16:08:07,778 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 16:08:07,837 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:08:07,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:08:07,838 INFO L158 Benchmark]: Toolchain (without parser) took 4971.59ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 76.2MB in the beginning and 33.5MB in the end (delta: 42.7MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,838 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:08:07,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.96ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 56.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.81ms. Allocated memory is still 98.6MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,840 INFO L158 Benchmark]: Boogie Preprocessor took 29.14ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,840 INFO L158 Benchmark]: RCFGBuilder took 473.35ms. Allocated memory is still 98.6MB. Free memory was 53.0MB in the beginning and 66.3MB in the end (delta: -13.3MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,842 INFO L158 Benchmark]: TraceAbstraction took 3844.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 37.7MB in the end (delta: 27.7MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,842 INFO L158 Benchmark]: Witness Printer took 61.86ms. Allocated memory is still 119.5MB. Free memory was 37.7MB in the beginning and 33.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:08:07,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.96ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 56.7MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.81ms. Allocated memory is still 98.6MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.14ms. Allocated memory is still 98.6MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.35ms. Allocated memory is still 98.6MB. Free memory was 53.0MB in the beginning and 66.3MB in the end (delta: -13.3MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3844.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 37.7MB in the end (delta: 27.7MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. * Witness Printer took 61.86ms. Allocated memory is still 119.5MB. Free memory was 37.7MB in the beginning and 33.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 77 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1727 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1106, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 443, independent: 427, independent conditional: 0, independent unconditional: 427, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1106, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 443, unknown conditional: 0, unknown unconditional: 443] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() 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}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: 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: 733]: 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: 732]: 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 7 procedures, 119 locations, 5 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: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 240 IncrementalHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 3 mSDtfsCounter, 240 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 15, 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, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2023-08-30 16:08:07,884 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE