/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:57:55,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:57:55,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:57:55,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:57:55,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:57:55,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:57:55,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:57:55,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:57:55,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:57:55,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:57:55,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:57:55,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:57:55,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:57:55,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:57:55,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:57:55,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:57:55,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:57:55,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:57:55,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:57:55,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:57:55,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:57:55,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:57:55,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:57:55,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:57:55,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 09:57:55,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:57:55,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:57:55,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:57:55,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:57:55,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:57:55,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:57:55,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:57:55,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:57:55,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:57:55,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:57:55,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:57:55,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:57:55,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:57:55,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:57:55,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:57:55,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:57:55,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:57:55,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:57:55,984 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:57:55,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:57:55,984 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:57:55,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:57:55,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:57:55,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:57:55,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:55,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:57:55,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:57:55,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:57:55,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:57:55,987 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:57:56,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:57:56,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:57:56,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:57:56,171 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:57:56,172 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:57:56,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-01-28 09:57:57,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:57:57,204 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:57:57,205 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-01-28 09:57:57,209 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21a1995/3b16e047c6cd446fa04098281693159b/FLAGc79936e94 [2023-01-28 09:57:57,226 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21a1995/3b16e047c6cd446fa04098281693159b [2023-01-28 09:57:57,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:57:57,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:57:57,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:57,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:57:57,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:57:57,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d91692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57, skipping insertion in model container [2023-01-28 09:57:57,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:57:57,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:57:57,388 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2023-01-28 09:57:57,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:57,402 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:57:57,430 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c[3089,3102] [2023-01-28 09:57:57,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:57:57,436 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:57,436 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:57:57,440 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:57:57,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57 WrapperNode [2023-01-28 09:57:57,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:57:57,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:57,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:57:57,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:57:57,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,481 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-01-28 09:57:57,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:57:57,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:57:57,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:57:57,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:57:57,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:57:57,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:57:57,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:57:57,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:57:57,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (1/1) ... [2023-01-28 09:57:57,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:57:57,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:57:57,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:57:57,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:57:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:57:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:57:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:57:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:57:57,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:57:57,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:57:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:57:57,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:57:57,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:57:57,559 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:57:57,625 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:57:57,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:57:57,822 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:57:57,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:57:57,885 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 09:57:57,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:57 BoogieIcfgContainer [2023-01-28 09:57:57,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:57:57,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:57:57,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:57:57,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:57:57,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:57:57" (1/3) ... [2023-01-28 09:57:57,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f67bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:57, skipping insertion in model container [2023-01-28 09:57:57,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:57:57" (2/3) ... [2023-01-28 09:57:57,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f67bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:57:57, skipping insertion in model container [2023-01-28 09:57:57,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:57:57" (3/3) ... [2023-01-28 09:57:57,892 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-01-28 09:57:57,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:57:57,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:57:57,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:57:57,942 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:57:57,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2023-01-28 09:57:58,018 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2023-01-28 09:57:58,018 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:57:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 2/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 09:57:58,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2023-01-28 09:57:58,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 106 transitions, 230 flow [2023-01-28 09:57:58,027 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:57:58,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 106 transitions, 230 flow [2023-01-28 09:57:58,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 106 transitions, 230 flow [2023-01-28 09:57:58,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 106 transitions, 230 flow [2023-01-28 09:57:58,061 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-01-28 09:57:58,061 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:57:58,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 2/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 09:57:58,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 702 [2023-01-28 09:58:00,562 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-01-28 09:58:00,563 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-01-28 09:58:00,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:58:00,577 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@812ea55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:58:00,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:58:00,582 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2023-01-28 09:58:00,583 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:58:00,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:00,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:00,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:00,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1533714414, now seen corresponding path program 1 times [2023-01-28 09:58:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185410888] [2023-01-28 09:58:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:00,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185410888] [2023-01-28 09:58:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185410888] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:01,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:01,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:58:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633248227] [2023-01-28 09:58:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:01,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:01,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 206 [2023-01-28 09:58:01,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 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) [2023-01-28 09:58:01,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:01,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 206 [2023-01-28 09:58:01,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:01,810 INFO L130 PetriNetUnfolder]: 991/1577 cut-off events. [2023-01-28 09:58:01,810 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-28 09:58:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1577 events. 991/1577 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6773 event pairs, 336 based on Foata normal form. 1/1578 useless extension candidates. Maximal degree in co-relation 2744. Up to 651 conditions per place. [2023-01-28 09:58:01,817 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 60 selfloop transitions, 9 changer transitions 13/82 dead transitions. [2023-01-28 09:58:01,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 373 flow [2023-01-28 09:58:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:58:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:58:01,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-01-28 09:58:01,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088996763754046 [2023-01-28 09:58:01,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-01-28 09:58:01,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-01-28 09:58:01,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:01,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-01-28 09:58:01,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2023-01-28 09:58:01,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-01-28 09:58:01,838 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 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) [2023-01-28 09:58:01,839 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 70 flow. Second operand 6 states and 629 transitions. [2023-01-28 09:58:01,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 373 flow [2023-01-28 09:58:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 343 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:58:01,844 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 109 flow [2023-01-28 09:58:01,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-01-28 09:58:01,847 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-01-28 09:58:01,847 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 109 flow [2023-01-28 09:58:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 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) [2023-01-28 09:58:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:01,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:58:01,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:01,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash -667539730, now seen corresponding path program 2 times [2023-01-28 09:58:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599354222] [2023-01-28 09:58:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599354222] [2023-01-28 09:58:01,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599354222] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:01,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:01,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840911051] [2023-01-28 09:58:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:01,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:01,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:01,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:01,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:01,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:01,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:02,178 INFO L130 PetriNetUnfolder]: 556/1097 cut-off events. [2023-01-28 09:58:02,178 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-01-28 09:58:02,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1097 events. 556/1097 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6172 event pairs, 50 based on Foata normal form. 16/1105 useless extension candidates. Maximal degree in co-relation 1551. Up to 308 conditions per place. [2023-01-28 09:58:02,182 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 63 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2023-01-28 09:58:02,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 98 transitions, 422 flow [2023-01-28 09:58:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:58:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:58:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 917 transitions. [2023-01-28 09:58:02,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460625674217906 [2023-01-28 09:58:02,185 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 917 transitions. [2023-01-28 09:58:02,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 917 transitions. [2023-01-28 09:58:02,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:02,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 917 transitions. [2023-01-28 09:58:02,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.88888888888889) internal successors, (917), 9 states have internal predecessors, (917), 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) [2023-01-28 09:58:02,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-01-28 09:58:02,190 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-01-28 09:58:02,190 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 109 flow. Second operand 9 states and 917 transitions. [2023-01-28 09:58:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 98 transitions, 422 flow [2023-01-28 09:58:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 98 transitions, 417 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:02,193 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 251 flow [2023-01-28 09:58:02,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-01-28 09:58:02,194 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-01-28 09:58:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 251 flow [2023-01-28 09:58:02,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:02,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:02,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:58:02,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:02,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1088940052, now seen corresponding path program 3 times [2023-01-28 09:58:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395357109] [2023-01-28 09:58:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:02,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395357109] [2023-01-28 09:58:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395357109] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:02,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:02,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625774359] [2023-01-28 09:58:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:02,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:02,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:02,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:02,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:02,436 INFO L130 PetriNetUnfolder]: 494/981 cut-off events. [2023-01-28 09:58:02,436 INFO L131 PetriNetUnfolder]: For 897/967 co-relation queries the response was YES. [2023-01-28 09:58:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 981 events. 494/981 cut-off events. For 897/967 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5209 event pairs, 98 based on Foata normal form. 52/1023 useless extension candidates. Maximal degree in co-relation 1765. Up to 571 conditions per place. [2023-01-28 09:58:02,441 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 58 selfloop transitions, 20 changer transitions 4/93 dead transitions. [2023-01-28 09:58:02,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 555 flow [2023-01-28 09:58:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 711 transitions. [2023-01-28 09:58:02,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930651872399445 [2023-01-28 09:58:02,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 711 transitions. [2023-01-28 09:58:02,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 711 transitions. [2023-01-28 09:58:02,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:02,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 711 transitions. [2023-01-28 09:58:02,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 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) [2023-01-28 09:58:02,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,446 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 251 flow. Second operand 7 states and 711 transitions. [2023-01-28 09:58:02,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 555 flow [2023-01-28 09:58:02,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:58:02,450 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 366 flow [2023-01-28 09:58:02,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-01-28 09:58:02,450 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-01-28 09:58:02,451 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 366 flow [2023-01-28 09:58:02,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:02,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:02,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:58:02,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:02,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1895373104, now seen corresponding path program 4 times [2023-01-28 09:58:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:02,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058430765] [2023-01-28 09:58:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:02,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058430765] [2023-01-28 09:58:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058430765] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527528319] [2023-01-28 09:58:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:02,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:02,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:02,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:02,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:02,705 INFO L130 PetriNetUnfolder]: 387/796 cut-off events. [2023-01-28 09:58:02,705 INFO L131 PetriNetUnfolder]: For 1374/1484 co-relation queries the response was YES. [2023-01-28 09:58:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 796 events. 387/796 cut-off events. For 1374/1484 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4092 event pairs, 80 based on Foata normal form. 60/853 useless extension candidates. Maximal degree in co-relation 2040. Up to 508 conditions per place. [2023-01-28 09:58:02,709 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 47 selfloop transitions, 16 changer transitions 11/85 dead transitions. [2023-01-28 09:58:02,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 578 flow [2023-01-28 09:58:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-01-28 09:58:02,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868238557558946 [2023-01-28 09:58:02,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-01-28 09:58:02,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-01-28 09:58:02,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:02,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-01-28 09:58:02,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 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) [2023-01-28 09:58:02,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,714 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 366 flow. Second operand 7 states and 702 transitions. [2023-01-28 09:58:02,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 578 flow [2023-01-28 09:58:02,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 562 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 09:58:02,718 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 379 flow [2023-01-28 09:58:02,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-01-28 09:58:02,718 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-28 09:58:02,719 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 379 flow [2023-01-28 09:58:02,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:02,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:58:02,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:02,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1934826232, now seen corresponding path program 5 times [2023-01-28 09:58:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732016186] [2023-01-28 09:58:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732016186] [2023-01-28 09:58:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732016186] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 09:58:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095772190] [2023-01-28 09:58:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:02,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 09:58:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 09:58:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 09:58:02,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:02,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:02,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:02,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:02,925 INFO L130 PetriNetUnfolder]: 177/400 cut-off events. [2023-01-28 09:58:02,925 INFO L131 PetriNetUnfolder]: For 680/724 co-relation queries the response was YES. [2023-01-28 09:58:02,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 400 events. 177/400 cut-off events. For 680/724 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1750 event pairs, 32 based on Foata normal form. 42/442 useless extension candidates. Maximal degree in co-relation 1395. Up to 258 conditions per place. [2023-01-28 09:58:02,927 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 49 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2023-01-28 09:58:02,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 538 flow [2023-01-28 09:58:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 695 transitions. [2023-01-28 09:58:02,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48196948682385576 [2023-01-28 09:58:02,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 695 transitions. [2023-01-28 09:58:02,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 695 transitions. [2023-01-28 09:58:02,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:02,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 695 transitions. [2023-01-28 09:58:02,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 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) [2023-01-28 09:58:02,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,932 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:02,932 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 379 flow. Second operand 7 states and 695 transitions. [2023-01-28 09:58:02,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 538 flow [2023-01-28 09:58:02,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 497 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 09:58:02,935 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 375 flow [2023-01-28 09:58:02,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-01-28 09:58:02,937 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-01-28 09:58:02,938 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 375 flow [2023-01-28 09:58:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 09:58:02,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:02,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:58:02,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:02,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 780280328, now seen corresponding path program 6 times [2023-01-28 09:58:02,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:02,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583492847] [2023-01-28 09:58:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:02,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:03,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583492847] [2023-01-28 09:58:03,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583492847] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:03,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:03,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:03,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545923052] [2023-01-28 09:58:03,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:03,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:03,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:03,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:03,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-01-28 09:58:03,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 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) [2023-01-28 09:58:03,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:03,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-01-28 09:58:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:03,199 INFO L130 PetriNetUnfolder]: 177/406 cut-off events. [2023-01-28 09:58:03,199 INFO L131 PetriNetUnfolder]: For 776/832 co-relation queries the response was YES. [2023-01-28 09:58:03,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 406 events. 177/406 cut-off events. For 776/832 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1818 event pairs, 28 based on Foata normal form. 26/432 useless extension candidates. Maximal degree in co-relation 1433. Up to 156 conditions per place. [2023-01-28 09:58:03,201 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 48 selfloop transitions, 22 changer transitions 6/82 dead transitions. [2023-01-28 09:58:03,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 618 flow [2023-01-28 09:58:03,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:58:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:58:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 818 transitions. [2023-01-28 09:58:03,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963592233009709 [2023-01-28 09:58:03,203 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 818 transitions. [2023-01-28 09:58:03,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 818 transitions. [2023-01-28 09:58:03,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:03,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 818 transitions. [2023-01-28 09:58:03,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.25) internal successors, (818), 8 states have internal predecessors, (818), 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) [2023-01-28 09:58:03,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-01-28 09:58:03,207 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2023-01-28 09:58:03,207 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 375 flow. Second operand 8 states and 818 transitions. [2023-01-28 09:58:03,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 618 flow [2023-01-28 09:58:03,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 611 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 09:58:03,210 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 431 flow [2023-01-28 09:58:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-01-28 09:58:03,211 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-01-28 09:58:03,211 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 431 flow [2023-01-28 09:58:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 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) [2023-01-28 09:58:03,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:03,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:58:03,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:03,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1012838398, now seen corresponding path program 7 times [2023-01-28 09:58:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764200290] [2023-01-28 09:58:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:03,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764200290] [2023-01-28 09:58:03,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764200290] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:03,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:03,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:03,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945481847] [2023-01-28 09:58:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:03,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:03,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:03,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:03,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:03,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:03,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 431 flow. Second operand has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:03,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:03,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:03,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:03,498 INFO L130 PetriNetUnfolder]: 167/390 cut-off events. [2023-01-28 09:58:03,498 INFO L131 PetriNetUnfolder]: For 996/1056 co-relation queries the response was YES. [2023-01-28 09:58:03,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 390 events. 167/390 cut-off events. For 996/1056 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1726 event pairs, 28 based on Foata normal form. 22/412 useless extension candidates. Maximal degree in co-relation 1463. Up to 238 conditions per place. [2023-01-28 09:58:03,500 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 48 selfloop transitions, 13 changer transitions 11/78 dead transitions. [2023-01-28 09:58:03,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 640 flow [2023-01-28 09:58:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:58:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:58:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 979 transitions. [2023-01-28 09:58:03,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47524271844660193 [2023-01-28 09:58:03,503 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 979 transitions. [2023-01-28 09:58:03,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 979 transitions. [2023-01-28 09:58:03,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:03,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 979 transitions. [2023-01-28 09:58:03,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.9) internal successors, (979), 10 states have internal predecessors, (979), 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) [2023-01-28 09:58:03,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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) [2023-01-28 09:58:03,507 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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) [2023-01-28 09:58:03,507 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 431 flow. Second operand 10 states and 979 transitions. [2023-01-28 09:58:03,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 640 flow [2023-01-28 09:58:03,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 593 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-01-28 09:58:03,510 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 384 flow [2023-01-28 09:58:03,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-01-28 09:58:03,510 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-28 09:58:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 384 flow [2023-01-28 09:58:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:03,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:03,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:58:03,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:03,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1760407986, now seen corresponding path program 8 times [2023-01-28 09:58:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725743118] [2023-01-28 09:58:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725743118] [2023-01-28 09:58:03,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725743118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:03,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993756248] [2023-01-28 09:58:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:03,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:03,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:03,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:03,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:03,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:03,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:03,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:03,781 INFO L130 PetriNetUnfolder]: 145/348 cut-off events. [2023-01-28 09:58:03,781 INFO L131 PetriNetUnfolder]: For 888/952 co-relation queries the response was YES. [2023-01-28 09:58:03,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 348 events. 145/348 cut-off events. For 888/952 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1498 event pairs, 26 based on Foata normal form. 32/380 useless extension candidates. Maximal degree in co-relation 1275. Up to 220 conditions per place. [2023-01-28 09:58:03,783 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 47 selfloop transitions, 12 changer transitions 11/76 dead transitions. [2023-01-28 09:58:03,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 605 flow [2023-01-28 09:58:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 09:58:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 09:58:03,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1072 transitions. [2023-01-28 09:58:03,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730803177405119 [2023-01-28 09:58:03,785 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1072 transitions. [2023-01-28 09:58:03,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1072 transitions. [2023-01-28 09:58:03,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:03,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1072 transitions. [2023-01-28 09:58:03,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 97.45454545454545) internal successors, (1072), 11 states have internal predecessors, (1072), 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) [2023-01-28 09:58:03,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 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) [2023-01-28 09:58:03,790 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 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) [2023-01-28 09:58:03,790 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 384 flow. Second operand 11 states and 1072 transitions. [2023-01-28 09:58:03,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 605 flow [2023-01-28 09:58:03,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 559 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-28 09:58:03,793 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 339 flow [2023-01-28 09:58:03,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=339, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-01-28 09:58:03,794 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-28 09:58:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 339 flow [2023-01-28 09:58:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:03,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:03,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:58:03,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:03,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1702827762, now seen corresponding path program 9 times [2023-01-28 09:58:03,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:03,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292422139] [2023-01-28 09:58:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292422139] [2023-01-28 09:58:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292422139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382834498] [2023-01-28 09:58:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:03,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:03,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:03,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:03,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:03,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:04,075 INFO L130 PetriNetUnfolder]: 120/291 cut-off events. [2023-01-28 09:58:04,075 INFO L131 PetriNetUnfolder]: For 711/755 co-relation queries the response was YES. [2023-01-28 09:58:04,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 291 events. 120/291 cut-off events. For 711/755 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1193 event pairs, 28 based on Foata normal form. 32/323 useless extension candidates. Maximal degree in co-relation 1059. Up to 137 conditions per place. [2023-01-28 09:58:04,077 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 39 selfloop transitions, 12 changer transitions 13/70 dead transitions. [2023-01-28 09:58:04,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 521 flow [2023-01-28 09:58:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:58:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:58:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 980 transitions. [2023-01-28 09:58:04,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572815533980584 [2023-01-28 09:58:04,079 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 980 transitions. [2023-01-28 09:58:04,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 980 transitions. [2023-01-28 09:58:04,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:04,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 980 transitions. [2023-01-28 09:58:04,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 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) [2023-01-28 09:58:04,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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) [2023-01-28 09:58:04,083 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 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) [2023-01-28 09:58:04,083 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 339 flow. Second operand 10 states and 980 transitions. [2023-01-28 09:58:04,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 521 flow [2023-01-28 09:58:04,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 484 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-01-28 09:58:04,086 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 265 flow [2023-01-28 09:58:04,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2023-01-28 09:58:04,086 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-28 09:58:04,086 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 265 flow [2023-01-28 09:58:04,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:04,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:04,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:04,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:58:04,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:04,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash -258616462, now seen corresponding path program 10 times [2023-01-28 09:58:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:04,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458315685] [2023-01-28 09:58:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458315685] [2023-01-28 09:58:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458315685] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:04,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:04,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:04,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263846007] [2023-01-28 09:58:04,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:04,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:04,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:04,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:04,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:04,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:04,286 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-01-28 09:58:04,286 INFO L131 PetriNetUnfolder]: For 522/534 co-relation queries the response was YES. [2023-01-28 09:58:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 269 events. 104/269 cut-off events. For 522/534 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1063 event pairs, 16 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 903. Up to 106 conditions per place. [2023-01-28 09:58:04,287 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 36 selfloop transitions, 23 changer transitions 5/70 dead transitions. [2023-01-28 09:58:04,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 488 flow [2023-01-28 09:58:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 697 transitions. [2023-01-28 09:58:04,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48335644937586686 [2023-01-28 09:58:04,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 697 transitions. [2023-01-28 09:58:04,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 697 transitions. [2023-01-28 09:58:04,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:04,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 697 transitions. [2023-01-28 09:58:04,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.57142857142857) internal successors, (697), 7 states have internal predecessors, (697), 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) [2023-01-28 09:58:04,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,293 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 265 flow. Second operand 7 states and 697 transitions. [2023-01-28 09:58:04,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 488 flow [2023-01-28 09:58:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 456 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-01-28 09:58:04,296 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 349 flow [2023-01-28 09:58:04,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-01-28 09:58:04,297 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-01-28 09:58:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 349 flow [2023-01-28 09:58:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:58:04,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:04,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash -510816648, now seen corresponding path program 11 times [2023-01-28 09:58:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997186029] [2023-01-28 09:58:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997186029] [2023-01-28 09:58:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997186029] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:58:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984067159] [2023-01-28 09:58:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:58:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:58:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:58:04,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:04,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:04,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:04,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:04,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:04,506 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-01-28 09:58:04,506 INFO L131 PetriNetUnfolder]: For 536/540 co-relation queries the response was YES. [2023-01-28 09:58:04,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 232 events. 87/232 cut-off events. For 536/540 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 898 event pairs, 8 based on Foata normal form. 12/244 useless extension candidates. Maximal degree in co-relation 859. Up to 70 conditions per place. [2023-01-28 09:58:04,508 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 28 selfloop transitions, 18 changer transitions 15/65 dead transitions. [2023-01-28 09:58:04,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 501 flow [2023-01-28 09:58:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 696 transitions. [2023-01-28 09:58:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826629680998613 [2023-01-28 09:58:04,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 696 transitions. [2023-01-28 09:58:04,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 696 transitions. [2023-01-28 09:58:04,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:04,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 696 transitions. [2023-01-28 09:58:04,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.42857142857143) internal successors, (696), 7 states have internal predecessors, (696), 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) [2023-01-28 09:58:04,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,512 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 349 flow. Second operand 7 states and 696 transitions. [2023-01-28 09:58:04,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 501 flow [2023-01-28 09:58:04,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 470 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 09:58:04,514 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 295 flow [2023-01-28 09:58:04,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-01-28 09:58:04,515 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-01-28 09:58:04,515 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 295 flow [2023-01-28 09:58:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.14285714285714) internal successors, (666), 7 states have internal predecessors, (666), 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) [2023-01-28 09:58:04,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:04,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:04,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:58:04,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:04,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1584888038, now seen corresponding path program 12 times [2023-01-28 09:58:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763745325] [2023-01-28 09:58:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763745325] [2023-01-28 09:58:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763745325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628932525] [2023-01-28 09:58:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:04,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:04,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:04,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:04,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:04,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:04,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:04,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:04,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:04,726 INFO L130 PetriNetUnfolder]: 36/107 cut-off events. [2023-01-28 09:58:04,726 INFO L131 PetriNetUnfolder]: For 334/338 co-relation queries the response was YES. [2023-01-28 09:58:04,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 107 events. 36/107 cut-off events. For 334/338 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 276 event pairs, 4 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 410. Up to 47 conditions per place. [2023-01-28 09:58:04,727 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 23 selfloop transitions, 3 changer transitions 15/45 dead transitions. [2023-01-28 09:58:04,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 45 transitions, 331 flow [2023-01-28 09:58:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:58:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:58:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2023-01-28 09:58:04,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46871628910463864 [2023-01-28 09:58:04,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2023-01-28 09:58:04,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2023-01-28 09:58:04,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:04,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2023-01-28 09:58:04,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.55555555555556) internal successors, (869), 9 states have internal predecessors, (869), 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) [2023-01-28 09:58:04,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-01-28 09:58:04,732 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 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) [2023-01-28 09:58:04,732 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 295 flow. Second operand 9 states and 869 transitions. [2023-01-28 09:58:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 45 transitions, 331 flow [2023-01-28 09:58:04,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 270 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-01-28 09:58:04,733 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 125 flow [2023-01-28 09:58:04,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=28} [2023-01-28 09:58:04,734 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 09:58:04,734 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 125 flow [2023-01-28 09:58:04,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:04,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:58:04,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:58:04,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:58:04,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:58:04,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:58:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -919681126, now seen corresponding path program 13 times [2023-01-28 09:58:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:58:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106145197] [2023-01-28 09:58:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:58:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:58:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:58:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:58:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:58:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106145197] [2023-01-28 09:58:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106145197] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:58:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:58:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:58:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622909777] [2023-01-28 09:58:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:58:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:58:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:58:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:58:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:58:04,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-28 09:58:04,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 28 transitions, 125 flow. Second operand has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:04,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:58:04,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-28 09:58:04,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:58:04,897 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-01-28 09:58:04,897 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-28 09:58:04,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 34 events. 9/34 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2023-01-28 09:58:04,898 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-01-28 09:58:04,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 117 flow [2023-01-28 09:58:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:58:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:58:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-01-28 09:58:04,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977808599167824 [2023-01-28 09:58:04,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-01-28 09:58:04,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-01-28 09:58:04,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:58:04,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-01-28 09:58:04,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 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) [2023-01-28 09:58:04,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,902 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2023-01-28 09:58:04,902 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 125 flow. Second operand 7 states and 663 transitions. [2023-01-28 09:58:04,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 117 flow [2023-01-28 09:58:04,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 91 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-01-28 09:58:04,903 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-01-28 09:58:04,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-01-28 09:58:04,903 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-01-28 09:58:04,903 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-01-28 09:58:04,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.75) internal successors, (758), 8 states have internal predecessors, (758), 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) [2023-01-28 09:58:04,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:58:04,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:58:04,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:58:04,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:58:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:58:04,906 INFO L445 BasicCegarLoop]: Path program histogram: [13] [2023-01-28 09:58:04,908 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:58:04,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:58:04,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:58:04 BasicIcfg [2023-01-28 09:58:04,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:58:04,910 INFO L158 Benchmark]: Toolchain (without parser) took 7681.15ms. Allocated memory was 371.2MB in the beginning and 536.9MB in the end (delta: 165.7MB). Free memory was 341.1MB in the beginning and 504.8MB in the end (delta: -163.7MB). Peak memory consumption was 6.2MB. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.95ms. Allocated memory is still 371.2MB. Free memory was 340.6MB in the beginning and 329.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.06ms. Allocated memory is still 371.2MB. Free memory was 329.7MB in the beginning and 327.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: Boogie Preprocessor took 23.56ms. Allocated memory is still 371.2MB. Free memory was 327.6MB in the beginning and 326.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: RCFGBuilder took 381.09ms. Allocated memory is still 371.2MB. Free memory was 326.5MB in the beginning and 306.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 09:58:04,910 INFO L158 Benchmark]: TraceAbstraction took 7021.49ms. Allocated memory was 371.2MB in the beginning and 536.9MB in the end (delta: 165.7MB). Free memory was 305.5MB in the beginning and 504.8MB in the end (delta: -199.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:58:04,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 210.95ms. Allocated memory is still 371.2MB. Free memory was 340.6MB in the beginning and 329.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.06ms. Allocated memory is still 371.2MB. Free memory was 329.7MB in the beginning and 327.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.56ms. Allocated memory is still 371.2MB. Free memory was 327.6MB in the beginning and 326.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 381.09ms. Allocated memory is still 371.2MB. Free memory was 326.5MB in the beginning and 306.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 7021.49ms. Allocated memory was 371.2MB in the beginning and 536.9MB in the end (delta: 165.7MB). Free memory was 305.5MB in the beginning and 504.8MB in the end (delta: -199.3MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 114 PlacesBefore, 36 PlacesAfterwards, 106 TransitionsBefore, 26 TransitionsAfterwards, 702 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 3460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1355, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 340, independent: 323, independent conditional: 0, independent unconditional: 323, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1355, independent: 852, independent conditional: 0, independent unconditional: 852, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 340, unknown conditional: 0, unknown unconditional: 340] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 143 locations, 4 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: 6.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2071 IncrementalHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 4 mSDtfsCounter, 2071 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=6, InterpolantAutomatonStates: 105, 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, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:58:04,924 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...