/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:09:46,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:09:46,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:09:46,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:09:46,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:09:46,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:09:46,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:09:46,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:09:46,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:09:46,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:09:46,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:09:46,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:09:46,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:09:46,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:09:46,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:09:46,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:09:46,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:09:46,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:09:46,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:09:46,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:09:46,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:09:46,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:09:46,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:09:46,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:09:46,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 21:09:46,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 21:09:46,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 21:09:46,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 21:09:46,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 21:09:46,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 21:09:46,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:09:46,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:09:46,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:09:46,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:09:46,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:09:46,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:09:46,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:09:46,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:09:46,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:09:46,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:09:46,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:09:46,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:09:46,755 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:09:46,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:09:46,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:09:46,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:09:46,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:09:46,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:09:46,757 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:09:46,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:09:46,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:09:46,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:09:46,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:09:46,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:09:46,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:09:46,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:09:46,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:09:46,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:09:46,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:09:46,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:09:46,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:09:46,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:09:46,942 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:09:46,943 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:09:46,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-01-27 21:09:47,923 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:09:48,129 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:09:48,129 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-01-27 21:09:48,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f95082b/87c7576ffab749d5b6fe523b4ea14243/FLAG5e7111013 [2023-01-27 21:09:48,145 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f95082b/87c7576ffab749d5b6fe523b4ea14243 [2023-01-27 21:09:48,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:09:48,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:09:48,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:09:48,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:09:48,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:09:48,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b81059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48, skipping insertion in model container [2023-01-27 21:09:48,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:09:48,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:09:48,289 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] [2023-01-27 21:09:48,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:09:48,304 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:09:48,317 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] [2023-01-27 21:09:48,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:09:48,322 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:09:48,323 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:09:48,327 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:09:48,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48 WrapperNode [2023-01-27 21:09:48,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:09:48,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:09:48,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:09:48,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:09:48,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,367 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-01-27 21:09:48,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:09:48,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:09:48,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:09:48,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:09:48,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:09:48,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:09:48,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:09:48,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:09:48,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (1/1) ... [2023-01-27 21:09:48,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:09:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:09:48,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:09:48,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:09:48,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:09:48,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:09:48,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:09:48,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:09:48,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:09:48,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:09:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:09:48,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:09:48,434 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:09:48,518 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:09:48,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:09:48,727 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:09:48,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:09:48,780 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 21:09:48,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:09:48 BoogieIcfgContainer [2023-01-27 21:09:48,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:09:48,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:09:48,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:09:48,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:09:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:09:48" (1/3) ... [2023-01-27 21:09:48,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34270465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:09:48, skipping insertion in model container [2023-01-27 21:09:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:09:48" (2/3) ... [2023-01-27 21:09:48,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34270465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:09:48, skipping insertion in model container [2023-01-27 21:09:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:09:48" (3/3) ... [2023-01-27 21:09:48,787 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-01-27 21:09:48,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:09:48,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:09:48,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:09:48,840 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 21:09:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2023-01-27 21:09:48,901 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2023-01-27 21:09:48,901 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:09:48,904 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. [2023-01-27 21:09:48,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2023-01-27 21:09:48,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 106 transitions, 230 flow [2023-01-27 21:09:48,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:09:48,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 106 transitions, 230 flow [2023-01-27 21:09:48,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 106 transitions, 230 flow [2023-01-27 21:09:48,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 106 transitions, 230 flow [2023-01-27 21:09:48,939 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-01-27 21:09:48,939 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:09:48,940 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. [2023-01-27 21:09:48,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 702 [2023-01-27 21:09:51,504 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-01-27 21:09:51,504 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-01-27 21:09:51,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:09:51,518 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;@548a9c6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:09:51,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 21:09:51,523 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2023-01-27 21:09:51,523 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 21:09:51,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:51,523 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] [2023-01-27 21:09:51,524 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)] === [2023-01-27 21:09:51,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1533714414, now seen corresponding path program 1 times [2023-01-27 21:09:51,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:51,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194374867] [2023-01-27 21:09:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:52,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194374867] [2023-01-27 21:09:52,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194374867] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:52,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:52,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:09:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113898547] [2023-01-27 21:09:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:09:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:09:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:09:52,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 206 [2023-01-27 21:09:52,483 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) [2023-01-27 21:09:52,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:52,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 206 [2023-01-27 21:09:52,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:52,826 INFO L130 PetriNetUnfolder]: 991/1577 cut-off events. [2023-01-27 21:09:52,826 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-27 21:09:52,830 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. [2023-01-27 21:09:52,835 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 60 selfloop transitions, 9 changer transitions 13/82 dead transitions. [2023-01-27 21:09:52,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 373 flow [2023-01-27 21:09:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:09:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:09:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-01-27 21:09:52,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088996763754046 [2023-01-27 21:09:52,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-01-27 21:09:52,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-01-27 21:09:52,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:52,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-01-27 21:09:52,857 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) [2023-01-27 21:09:52,862 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) [2023-01-27 21:09:52,862 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) [2023-01-27 21:09:52,864 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 70 flow. Second operand 6 states and 629 transitions. [2023-01-27 21:09:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 373 flow [2023-01-27 21:09:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 343 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 21:09:52,870 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 109 flow [2023-01-27 21:09:52,871 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} [2023-01-27 21:09:52,874 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-01-27 21:09:52,875 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 109 flow [2023-01-27 21:09:52,875 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) [2023-01-27 21:09:52,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:52,875 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] [2023-01-27 21:09:52,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:09:52,876 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)] === [2023-01-27 21:09:52,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -667539730, now seen corresponding path program 2 times [2023-01-27 21:09:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114057255] [2023-01-27 21:09:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:52,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114057255] [2023-01-27 21:09:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114057255] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:53,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:09:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924271256] [2023-01-27 21:09:53,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:09:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:09:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:09:53,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:53,063 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) [2023-01-27 21:09:53,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:53,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:53,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:53,251 INFO L130 PetriNetUnfolder]: 556/1097 cut-off events. [2023-01-27 21:09:53,251 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-01-27 21:09:53,253 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. [2023-01-27 21:09:53,256 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 63 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2023-01-27 21:09:53,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 98 transitions, 422 flow [2023-01-27 21:09:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:09:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:09:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 917 transitions. [2023-01-27 21:09:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49460625674217906 [2023-01-27 21:09:53,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 917 transitions. [2023-01-27 21:09:53,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 917 transitions. [2023-01-27 21:09:53,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:53,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 917 transitions. [2023-01-27 21:09:53,266 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) [2023-01-27 21:09:53,267 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) [2023-01-27 21:09:53,268 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) [2023-01-27 21:09:53,268 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 109 flow. Second operand 9 states and 917 transitions. [2023-01-27 21:09:53,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 98 transitions, 422 flow [2023-01-27 21:09:53,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 98 transitions, 417 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:09:53,273 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 251 flow [2023-01-27 21:09:53,273 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} [2023-01-27 21:09:53,274 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-01-27 21:09:53,274 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 251 flow [2023-01-27 21:09:53,274 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) [2023-01-27 21:09:53,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:53,275 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] [2023-01-27 21:09:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:09:53,275 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)] === [2023-01-27 21:09:53,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1088940052, now seen corresponding path program 3 times [2023-01-27 21:09:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:53,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213640487] [2023-01-27 21:09:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:53,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213640487] [2023-01-27 21:09:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213640487] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:09:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322676899] [2023-01-27 21:09:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:53,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:09:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:09:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:09:53,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:53,435 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) [2023-01-27 21:09:53,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:53,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:53,576 INFO L130 PetriNetUnfolder]: 494/981 cut-off events. [2023-01-27 21:09:53,576 INFO L131 PetriNetUnfolder]: For 897/967 co-relation queries the response was YES. [2023-01-27 21:09:53,578 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. [2023-01-27 21:09:53,581 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 58 selfloop transitions, 20 changer transitions 4/93 dead transitions. [2023-01-27 21:09:53,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 555 flow [2023-01-27 21:09:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 711 transitions. [2023-01-27 21:09:53,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930651872399445 [2023-01-27 21:09:53,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 711 transitions. [2023-01-27 21:09:53,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 711 transitions. [2023-01-27 21:09:53,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:53,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 711 transitions. [2023-01-27 21:09:53,585 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) [2023-01-27 21:09:53,587 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) [2023-01-27 21:09:53,588 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) [2023-01-27 21:09:53,588 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 251 flow. Second operand 7 states and 711 transitions. [2023-01-27 21:09:53,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 555 flow [2023-01-27 21:09:53,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 21:09:53,592 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 366 flow [2023-01-27 21:09:53,592 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} [2023-01-27 21:09:53,592 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-01-27 21:09:53,592 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 366 flow [2023-01-27 21:09:53,593 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) [2023-01-27 21:09:53,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:53,593 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] [2023-01-27 21:09:53,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:09:53,595 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)] === [2023-01-27 21:09:53,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1895373104, now seen corresponding path program 4 times [2023-01-27 21:09:53,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:53,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390172706] [2023-01-27 21:09:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390172706] [2023-01-27 21:09:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390172706] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:09:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85635065] [2023-01-27 21:09:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:09:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:09:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:09:53,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:53,784 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) [2023-01-27 21:09:53,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:53,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:53,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:53,925 INFO L130 PetriNetUnfolder]: 387/796 cut-off events. [2023-01-27 21:09:53,925 INFO L131 PetriNetUnfolder]: For 1374/1484 co-relation queries the response was YES. [2023-01-27 21:09:53,928 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. [2023-01-27 21:09:53,931 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 47 selfloop transitions, 16 changer transitions 11/85 dead transitions. [2023-01-27 21:09:53,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 578 flow [2023-01-27 21:09:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-01-27 21:09:53,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868238557558946 [2023-01-27 21:09:53,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-01-27 21:09:53,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-01-27 21:09:53,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:53,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-01-27 21:09:53,936 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) [2023-01-27 21:09:53,938 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) [2023-01-27 21:09:53,938 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) [2023-01-27 21:09:53,938 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 366 flow. Second operand 7 states and 702 transitions. [2023-01-27 21:09:53,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 578 flow [2023-01-27 21:09:53,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 562 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 21:09:53,943 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 379 flow [2023-01-27 21:09:53,943 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} [2023-01-27 21:09:53,943 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-27 21:09:53,943 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 379 flow [2023-01-27 21:09:53,944 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) [2023-01-27 21:09:53,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:53,944 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] [2023-01-27 21:09:53,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:09:53,944 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)] === [2023-01-27 21:09:53,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1934826232, now seen corresponding path program 5 times [2023-01-27 21:09:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857861995] [2023-01-27 21:09:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:54,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857861995] [2023-01-27 21:09:54,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857861995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:54,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:54,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:09:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612902262] [2023-01-27 21:09:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:54,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:09:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:09:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:09:54,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:54,053 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) [2023-01-27 21:09:54,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:54,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:54,136 INFO L130 PetriNetUnfolder]: 177/400 cut-off events. [2023-01-27 21:09:54,136 INFO L131 PetriNetUnfolder]: For 680/724 co-relation queries the response was YES. [2023-01-27 21:09:54,137 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. [2023-01-27 21:09:54,138 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 49 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2023-01-27 21:09:54,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 538 flow [2023-01-27 21:09:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 695 transitions. [2023-01-27 21:09:54,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48196948682385576 [2023-01-27 21:09:54,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 695 transitions. [2023-01-27 21:09:54,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 695 transitions. [2023-01-27 21:09:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:54,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 695 transitions. [2023-01-27 21:09:54,142 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) [2023-01-27 21:09:54,143 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) [2023-01-27 21:09:54,143 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) [2023-01-27 21:09:54,143 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 379 flow. Second operand 7 states and 695 transitions. [2023-01-27 21:09:54,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 538 flow [2023-01-27 21:09:54,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 497 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-27 21:09:54,146 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 375 flow [2023-01-27 21:09:54,146 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} [2023-01-27 21:09:54,147 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-01-27 21:09:54,147 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 375 flow [2023-01-27 21:09:54,147 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) [2023-01-27 21:09:54,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:54,147 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] [2023-01-27 21:09:54,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:09:54,148 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)] === [2023-01-27 21:09:54,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 780280328, now seen corresponding path program 6 times [2023-01-27 21:09:54,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:54,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362546992] [2023-01-27 21:09:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:54,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:54,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362546992] [2023-01-27 21:09:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362546992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:54,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:54,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:09:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019498851] [2023-01-27 21:09:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:54,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:09:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:09:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:09:54,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-01-27 21:09:54,259 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) [2023-01-27 21:09:54,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:54,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-01-27 21:09:54,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:54,380 INFO L130 PetriNetUnfolder]: 177/406 cut-off events. [2023-01-27 21:09:54,381 INFO L131 PetriNetUnfolder]: For 776/832 co-relation queries the response was YES. [2023-01-27 21:09:54,382 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. [2023-01-27 21:09:54,383 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 48 selfloop transitions, 22 changer transitions 6/82 dead transitions. [2023-01-27 21:09:54,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 618 flow [2023-01-27 21:09:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:09:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:09:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 818 transitions. [2023-01-27 21:09:54,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963592233009709 [2023-01-27 21:09:54,385 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 818 transitions. [2023-01-27 21:09:54,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 818 transitions. [2023-01-27 21:09:54,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:54,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 818 transitions. [2023-01-27 21:09:54,386 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) [2023-01-27 21:09:54,388 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) [2023-01-27 21:09:54,388 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) [2023-01-27 21:09:54,388 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 375 flow. Second operand 8 states and 818 transitions. [2023-01-27 21:09:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 618 flow [2023-01-27 21:09:54,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 611 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 21:09:54,391 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 431 flow [2023-01-27 21:09:54,391 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} [2023-01-27 21:09:54,392 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-01-27 21:09:54,392 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 431 flow [2023-01-27 21:09:54,392 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) [2023-01-27 21:09:54,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:54,392 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] [2023-01-27 21:09:54,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:09:54,392 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)] === [2023-01-27 21:09:54,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1012838398, now seen corresponding path program 7 times [2023-01-27 21:09:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80290694] [2023-01-27 21:09:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:54,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80290694] [2023-01-27 21:09:54,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80290694] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:54,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:54,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:09:54,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581545571] [2023-01-27 21:09:54,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:54,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:09:54,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:09:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:09:54,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:54,523 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) [2023-01-27 21:09:54,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:54,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:54,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:54,674 INFO L130 PetriNetUnfolder]: 167/390 cut-off events. [2023-01-27 21:09:54,674 INFO L131 PetriNetUnfolder]: For 996/1056 co-relation queries the response was YES. [2023-01-27 21:09:54,675 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. [2023-01-27 21:09:54,676 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 48 selfloop transitions, 13 changer transitions 11/78 dead transitions. [2023-01-27 21:09:54,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 640 flow [2023-01-27 21:09:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 21:09:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 21:09:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 979 transitions. [2023-01-27 21:09:54,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47524271844660193 [2023-01-27 21:09:54,679 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 979 transitions. [2023-01-27 21:09:54,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 979 transitions. [2023-01-27 21:09:54,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:54,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 979 transitions. [2023-01-27 21:09:54,681 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) [2023-01-27 21:09:54,682 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) [2023-01-27 21:09:54,683 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) [2023-01-27 21:09:54,683 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 431 flow. Second operand 10 states and 979 transitions. [2023-01-27 21:09:54,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 640 flow [2023-01-27 21:09:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 593 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-01-27 21:09:54,686 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 384 flow [2023-01-27 21:09:54,686 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} [2023-01-27 21:09:54,687 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-27 21:09:54,687 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 384 flow [2023-01-27 21:09:54,687 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) [2023-01-27 21:09:54,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:54,687 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] [2023-01-27 21:09:54,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:09:54,688 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)] === [2023-01-27 21:09:54,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1760407986, now seen corresponding path program 8 times [2023-01-27 21:09:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340113170] [2023-01-27 21:09:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340113170] [2023-01-27 21:09:54,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340113170] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:54,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:54,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:09:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702863417] [2023-01-27 21:09:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:09:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:09:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:09:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:54,829 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) [2023-01-27 21:09:54,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:54,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:54,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:54,977 INFO L130 PetriNetUnfolder]: 145/348 cut-off events. [2023-01-27 21:09:54,977 INFO L131 PetriNetUnfolder]: For 888/952 co-relation queries the response was YES. [2023-01-27 21:09:54,978 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. [2023-01-27 21:09:54,979 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 47 selfloop transitions, 12 changer transitions 11/76 dead transitions. [2023-01-27 21:09:54,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 605 flow [2023-01-27 21:09:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:09:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:09:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1072 transitions. [2023-01-27 21:09:54,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730803177405119 [2023-01-27 21:09:54,981 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1072 transitions. [2023-01-27 21:09:54,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1072 transitions. [2023-01-27 21:09:54,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:54,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1072 transitions. [2023-01-27 21:09:54,983 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) [2023-01-27 21:09:54,985 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) [2023-01-27 21:09:54,986 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) [2023-01-27 21:09:54,986 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 384 flow. Second operand 11 states and 1072 transitions. [2023-01-27 21:09:54,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 605 flow [2023-01-27 21:09:54,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 559 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-27 21:09:54,990 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 339 flow [2023-01-27 21:09:54,990 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} [2023-01-27 21:09:54,992 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-01-27 21:09:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 339 flow [2023-01-27 21:09:54,992 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) [2023-01-27 21:09:54,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:54,992 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] [2023-01-27 21:09:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:09:54,993 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)] === [2023-01-27 21:09:54,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1702827762, now seen corresponding path program 9 times [2023-01-27 21:09:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022577709] [2023-01-27 21:09:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:55,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022577709] [2023-01-27 21:09:55,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022577709] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:55,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:55,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:09:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383836960] [2023-01-27 21:09:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:09:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:09:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:09:55,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:55,175 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) [2023-01-27 21:09:55,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:55,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:55,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:55,316 INFO L130 PetriNetUnfolder]: 120/291 cut-off events. [2023-01-27 21:09:55,316 INFO L131 PetriNetUnfolder]: For 711/755 co-relation queries the response was YES. [2023-01-27 21:09:55,317 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. [2023-01-27 21:09:55,318 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 39 selfloop transitions, 12 changer transitions 13/70 dead transitions. [2023-01-27 21:09:55,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 521 flow [2023-01-27 21:09:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 21:09:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 21:09:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 980 transitions. [2023-01-27 21:09:55,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47572815533980584 [2023-01-27 21:09:55,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 980 transitions. [2023-01-27 21:09:55,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 980 transitions. [2023-01-27 21:09:55,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:55,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 980 transitions. [2023-01-27 21:09:55,322 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) [2023-01-27 21:09:55,324 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) [2023-01-27 21:09:55,325 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) [2023-01-27 21:09:55,325 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 339 flow. Second operand 10 states and 980 transitions. [2023-01-27 21:09:55,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 521 flow [2023-01-27 21:09:55,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 484 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-01-27 21:09:55,328 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 265 flow [2023-01-27 21:09:55,328 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} [2023-01-27 21:09:55,328 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-27 21:09:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 265 flow [2023-01-27 21:09:55,329 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) [2023-01-27 21:09:55,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:55,329 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] [2023-01-27 21:09:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:09:55,329 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)] === [2023-01-27 21:09:55,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -258616462, now seen corresponding path program 10 times [2023-01-27 21:09:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644101086] [2023-01-27 21:09:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644101086] [2023-01-27 21:09:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644101086] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:55,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:55,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:09:55,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915546335] [2023-01-27 21:09:55,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:55,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:09:55,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:09:55,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:09:55,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:55,476 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) [2023-01-27 21:09:55,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:55,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:55,548 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-01-27 21:09:55,548 INFO L131 PetriNetUnfolder]: For 522/534 co-relation queries the response was YES. [2023-01-27 21:09:55,549 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. [2023-01-27 21:09:55,550 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 36 selfloop transitions, 23 changer transitions 5/70 dead transitions. [2023-01-27 21:09:55,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 488 flow [2023-01-27 21:09:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 697 transitions. [2023-01-27 21:09:55,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48335644937586686 [2023-01-27 21:09:55,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 697 transitions. [2023-01-27 21:09:55,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 697 transitions. [2023-01-27 21:09:55,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:55,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 697 transitions. [2023-01-27 21:09:55,554 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) [2023-01-27 21:09:55,555 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) [2023-01-27 21:09:55,555 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) [2023-01-27 21:09:55,555 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 265 flow. Second operand 7 states and 697 transitions. [2023-01-27 21:09:55,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 488 flow [2023-01-27 21:09:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 456 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-01-27 21:09:55,559 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 349 flow [2023-01-27 21:09:55,559 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} [2023-01-27 21:09:55,560 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-01-27 21:09:55,560 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 349 flow [2023-01-27 21:09:55,560 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) [2023-01-27 21:09:55,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:55,560 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] [2023-01-27 21:09:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 21:09:55,560 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)] === [2023-01-27 21:09:55,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -510816648, now seen corresponding path program 11 times [2023-01-27 21:09:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816086739] [2023-01-27 21:09:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816086739] [2023-01-27 21:09:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816086739] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:55,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:09:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688038842] [2023-01-27 21:09:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:55,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:09:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:09:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:09:55,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:55,683 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) [2023-01-27 21:09:55,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:55,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:55,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:55,767 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-01-27 21:09:55,767 INFO L131 PetriNetUnfolder]: For 536/540 co-relation queries the response was YES. [2023-01-27 21:09:55,768 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. [2023-01-27 21:09:55,768 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 28 selfloop transitions, 18 changer transitions 15/65 dead transitions. [2023-01-27 21:09:55,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 501 flow [2023-01-27 21:09:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 696 transitions. [2023-01-27 21:09:55,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826629680998613 [2023-01-27 21:09:55,770 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 696 transitions. [2023-01-27 21:09:55,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 696 transitions. [2023-01-27 21:09:55,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:55,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 696 transitions. [2023-01-27 21:09:55,772 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) [2023-01-27 21:09:55,773 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) [2023-01-27 21:09:55,774 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) [2023-01-27 21:09:55,774 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 349 flow. Second operand 7 states and 696 transitions. [2023-01-27 21:09:55,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 501 flow [2023-01-27 21:09:55,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 470 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-27 21:09:55,776 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 295 flow [2023-01-27 21:09:55,776 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} [2023-01-27 21:09:55,776 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-01-27 21:09:55,776 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 295 flow [2023-01-27 21:09:55,777 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) [2023-01-27 21:09:55,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:55,777 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] [2023-01-27 21:09:55,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 21:09:55,777 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)] === [2023-01-27 21:09:55,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1584888038, now seen corresponding path program 12 times [2023-01-27 21:09:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518687966] [2023-01-27 21:09:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518687966] [2023-01-27 21:09:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518687966] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:55,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:09:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474123988] [2023-01-27 21:09:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:55,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:09:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:09:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:09:55,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:55,894 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) [2023-01-27 21:09:55,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:55,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:55,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:56,006 INFO L130 PetriNetUnfolder]: 36/107 cut-off events. [2023-01-27 21:09:56,006 INFO L131 PetriNetUnfolder]: For 334/338 co-relation queries the response was YES. [2023-01-27 21:09:56,006 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. [2023-01-27 21:09:56,007 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 23 selfloop transitions, 3 changer transitions 15/45 dead transitions. [2023-01-27 21:09:56,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 45 transitions, 331 flow [2023-01-27 21:09:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:09:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:09:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 869 transitions. [2023-01-27 21:09:56,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46871628910463864 [2023-01-27 21:09:56,009 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 869 transitions. [2023-01-27 21:09:56,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 869 transitions. [2023-01-27 21:09:56,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:56,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 869 transitions. [2023-01-27 21:09:56,010 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) [2023-01-27 21:09:56,012 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) [2023-01-27 21:09:56,013 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) [2023-01-27 21:09:56,013 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 295 flow. Second operand 9 states and 869 transitions. [2023-01-27 21:09:56,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 45 transitions, 331 flow [2023-01-27 21:09:56,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 270 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-01-27 21:09:56,014 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 125 flow [2023-01-27 21:09:56,014 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} [2023-01-27 21:09:56,015 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-27 21:09:56,015 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 125 flow [2023-01-27 21:09:56,015 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) [2023-01-27 21:09:56,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:09:56,015 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] [2023-01-27 21:09:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 21:09:56,015 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)] === [2023-01-27 21:09:56,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:09:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -919681126, now seen corresponding path program 13 times [2023-01-27 21:09:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:09:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405203862] [2023-01-27 21:09:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:09:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:09:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:09:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:09:56,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:09:56,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405203862] [2023-01-27 21:09:56,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405203862] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:09:56,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:09:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:09:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507055069] [2023-01-27 21:09:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:09:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:09:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:09:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:09:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:09:56,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 206 [2023-01-27 21:09:56,166 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) [2023-01-27 21:09:56,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:09:56,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 206 [2023-01-27 21:09:56,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:09:56,202 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-01-27 21:09:56,202 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-27 21:09:56,202 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. [2023-01-27 21:09:56,202 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-01-27 21:09:56,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 117 flow [2023-01-27 21:09:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:09:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:09:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-01-27 21:09:56,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977808599167824 [2023-01-27 21:09:56,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-01-27 21:09:56,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-01-27 21:09:56,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:09:56,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-01-27 21:09:56,205 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) [2023-01-27 21:09:56,207 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) [2023-01-27 21:09:56,207 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) [2023-01-27 21:09:56,207 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 125 flow. Second operand 7 states and 663 transitions. [2023-01-27 21:09:56,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 117 flow [2023-01-27 21:09:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 91 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-01-27 21:09:56,208 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-01-27 21:09:56,208 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} [2023-01-27 21:09:56,208 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-01-27 21:09:56,208 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-01-27 21:09:56,208 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) [2023-01-27 21:09:56,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 21:09:56,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 21:09:56,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 21:09:56,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 21:09:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 21:09:56,211 INFO L445 BasicCegarLoop]: Path program histogram: [13] [2023-01-27 21:09:56,213 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:09:56,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:09:56,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:09:56 BasicIcfg [2023-01-27 21:09:56,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:09:56,215 INFO L158 Benchmark]: Toolchain (without parser) took 8067.67ms. Allocated memory was 343.9MB in the beginning and 497.0MB in the end (delta: 153.1MB). Free memory was 313.4MB in the beginning and 409.9MB in the end (delta: -96.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,215 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:09:56,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.79ms. Allocated memory is still 343.9MB. Free memory was 313.0MB in the beginning and 301.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.23ms. Allocated memory is still 343.9MB. Free memory was 301.7MB in the beginning and 299.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,215 INFO L158 Benchmark]: Boogie Preprocessor took 16.45ms. Allocated memory is still 343.9MB. Free memory was 299.7MB in the beginning and 298.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,215 INFO L158 Benchmark]: RCFGBuilder took 397.18ms. Allocated memory is still 343.9MB. Free memory was 298.4MB in the beginning and 278.4MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,216 INFO L158 Benchmark]: TraceAbstraction took 7431.23ms. Allocated memory was 343.9MB in the beginning and 497.0MB in the end (delta: 153.1MB). Free memory was 277.4MB in the beginning and 409.9MB in the end (delta: -132.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 21:09:56,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 214.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 179.79ms. Allocated memory is still 343.9MB. Free memory was 313.0MB in the beginning and 301.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.23ms. Allocated memory is still 343.9MB. Free memory was 301.7MB in the beginning and 299.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.45ms. Allocated memory is still 343.9MB. Free memory was 299.7MB in the beginning and 298.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 397.18ms. Allocated memory is still 343.9MB. Free memory was 298.4MB in the beginning and 278.4MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 7431.23ms. Allocated memory was 343.9MB in the beginning and 497.0MB in the end (delta: 153.1MB). Free memory was 277.4MB in the beginning and 409.9MB in the end (delta: -132.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 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: 7.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.8s 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, 2.2s 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! [2023-01-27 21:09:56,242 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...