/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:15,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:15,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:15,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:39:15,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:39:15,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:39:15,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:39:15,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:39:15,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:39:15,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:39:15,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:39:15,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:39:15,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:15,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:15,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:15,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:15,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:15,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:15,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:15,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:15,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:15,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:15,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:15,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:15,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:39:15,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:39:15,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:39:15,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:39:15,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:39:15,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:39:15,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:39:15,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:39:15,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:39:15,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:15,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:15,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:15,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:39:15,712 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:15,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:15,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:15,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:15,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:15,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:15,714 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:15,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:15,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:15,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:15,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:15,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:15,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:15,914 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:15,914 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:15,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-01-27 23:39:16,844 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:17,012 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:17,012 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-01-27 23:39:17,023 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6633e10c1/0e0d125062da4c86a5b2e4c2464d9369/FLAG7d8661eeb [2023-01-27 23:39:17,389 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6633e10c1/0e0d125062da4c86a5b2e4c2464d9369 [2023-01-27 23:39:17,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:17,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:17,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:17,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:17,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad2790f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:17,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:17,730 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-01-27 23:39:17,738 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-01-27 23:39:17,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-01-27 23:39:17,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,763 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:17,814 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-01-27 23:39:17,817 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-01-27 23:39:17,828 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-01-27 23:39:17,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,872 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:17,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17 WrapperNode [2023-01-27 23:39:17,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:17,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:17,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,934 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2023-01-27 23:39:17,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:17,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:17,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:17,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:17,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:17,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:17,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:39:17,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:39:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:39:18,034 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:39:18,036 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:18,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:18,037 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:39:18,207 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:18,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:18,551 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:18,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:18,558 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:39:18,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18 BoogieIcfgContainer [2023-01-27 23:39:18,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:18,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:18,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:18,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:17" (1/3) ... [2023-01-27 23:39:18,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b24b57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (2/3) ... [2023-01-27 23:39:18,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b24b57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18" (3/3) ... [2023-01-27 23:39:18,564 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-01-27 23:39:18,581 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:18,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 23:39:18,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:18,665 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 23:39:18,752 INFO L130 PetriNetUnfolder]: 15/256 cut-off events. [2023-01-27 23:39:18,752 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:18,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 23:39:18,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 532 flow [2023-01-27 23:39:18,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,769 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:18,776 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 247 transitions, 503 flow [2023-01-27 23:39:18,819 INFO L130 PetriNetUnfolder]: 15/247 cut-off events. [2023-01-27 23:39:18,819 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:18,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 15/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-01-27 23:39:18,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-01-27 23:39:24,172 INFO L134 LiptonReduction]: Checked pairs total: 33075 [2023-01-27 23:39:24,173 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-01-27 23:39:24,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:24,186 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;@6ef10be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:24,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 23:39:24,187 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 23:39:24,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:39:24,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 23:39:24,188 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 4 more)] === [2023-01-27 23:39:24,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2023-01-27 23:39:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269392365] [2023-01-27 23:39:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:24,261 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 23:39:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269392365] [2023-01-27 23:39:24,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269392365] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:24,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:24,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 23:39:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349194249] [2023-01-27 23:39:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:24,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:39:24,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:39:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:39:24,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 473 [2023-01-27 23:39:24,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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 23:39:24,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:24,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 473 [2023-01-27 23:39:24,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:24,530 INFO L130 PetriNetUnfolder]: 1540/2645 cut-off events. [2023-01-27 23:39:24,530 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 23:39:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 2645 events. 1540/2645 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12466 event pairs, 1212 based on Foata normal form. 32/2302 useless extension candidates. Maximal degree in co-relation 4962. Up to 2396 conditions per place. [2023-01-27 23:39:24,545 INFO L137 encePairwiseOnDemand]: 470/473 looper letters, 53 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2023-01-27 23:39:24,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 241 flow [2023-01-27 23:39:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:39:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:39:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2023-01-27 23:39:24,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771670190274841 [2023-01-27 23:39:24,556 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:24,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2023-01-27 23:39:24,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 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 23:39:24,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 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 23:39:24,565 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 473.0) internal successors, (1419), 3 states have internal predecessors, (1419), 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 23:39:24,566 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 141 flow. Second operand 2 states and 546 transitions. [2023-01-27 23:39:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 241 flow [2023-01-27 23:39:24,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:24,570 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 130 flow [2023-01-27 23:39:24,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-01-27 23:39:24,574 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-01-27 23:39:24,574 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 130 flow [2023-01-27 23:39:24,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.5) internal successors, (491), 2 states have internal predecessors, (491), 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 23:39:24,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:24,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:24,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 110343563, now seen corresponding path program 1 times [2023-01-27 23:39:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914300482] [2023-01-27 23:39:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:24,765 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 23:39:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914300482] [2023-01-27 23:39:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914300482] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465863449] [2023-01-27 23:39:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:24,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:24,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 23:39:24,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 23:39:24,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:24,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 23:39:24,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:25,008 INFO L130 PetriNetUnfolder]: 1508/2611 cut-off events. [2023-01-27 23:39:25,008 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:25,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 2611 events. 1508/2611 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 12447 event pairs, 1167 based on Foata normal form. 0/2268 useless extension candidates. Maximal degree in co-relation 5029. Up to 2249 conditions per place. [2023-01-27 23:39:25,018 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 68 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-01-27 23:39:25,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 310 flow [2023-01-27 23:39:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-01-27 23:39:25,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560253699788583 [2023-01-27 23:39:25,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-01-27 23:39:25,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-01-27 23:39:25,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:25,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-01-27 23:39:25,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 23:39:25,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:25,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:25,026 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 130 flow. Second operand 3 states and 789 transitions. [2023-01-27 23:39:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 310 flow [2023-01-27 23:39:25,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:25,029 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 134 flow [2023-01-27 23:39:25,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-01-27 23:39:25,030 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-01-27 23:39:25,030 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 134 flow [2023-01-27 23:39:25,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 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 23:39:25,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:25,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:25,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:25,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:25,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1330496416, now seen corresponding path program 1 times [2023-01-27 23:39:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:25,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311861191] [2023-01-27 23:39:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:25,845 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 23:39:25,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311861191] [2023-01-27 23:39:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311861191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:25,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:39:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175581574] [2023-01-27 23:39:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:39:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:39:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:39:25,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 473 [2023-01-27 23:39:25,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 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 23:39:25,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:25,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 473 [2023-01-27 23:39:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:26,283 INFO L130 PetriNetUnfolder]: 1608/2744 cut-off events. [2023-01-27 23:39:26,283 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 23:39:26,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5428 conditions, 2744 events. 1608/2744 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12803 event pairs, 1244 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 5424. Up to 2518 conditions per place. [2023-01-27 23:39:26,294 INFO L137 encePairwiseOnDemand]: 466/473 looper letters, 57 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-01-27 23:39:26,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 292 flow [2023-01-27 23:39:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1177 transitions. [2023-01-27 23:39:26,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2023-01-27 23:39:26,297 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1177 transitions. [2023-01-27 23:39:26,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1177 transitions. [2023-01-27 23:39:26,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:26,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1177 transitions. [2023-01-27 23:39:26,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.16666666666666) internal successors, (1177), 6 states have internal predecessors, (1177), 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 23:39:26,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:26,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:26,304 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 134 flow. Second operand 6 states and 1177 transitions. [2023-01-27 23:39:26,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 292 flow [2023-01-27 23:39:26,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:39:26,306 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 186 flow [2023-01-27 23:39:26,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-01-27 23:39:26,307 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-01-27 23:39:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 186 flow [2023-01-27 23:39:26,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 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 23:39:26,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:26,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:26,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:39:26,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:26,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -588975779, now seen corresponding path program 1 times [2023-01-27 23:39:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929974039] [2023-01-27 23:39:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:26,671 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 23:39:26,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:26,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929974039] [2023-01-27 23:39:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929974039] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:26,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:26,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623430668] [2023-01-27 23:39:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:26,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:26,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 23:39:26,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 23:39:26,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:26,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 23:39:26,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:26,983 INFO L130 PetriNetUnfolder]: 1839/3131 cut-off events. [2023-01-27 23:39:26,983 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-01-27 23:39:26,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 3131 events. 1839/3131 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15144 event pairs, 302 based on Foata normal form. 17/2811 useless extension candidates. Maximal degree in co-relation 6384. Up to 2548 conditions per place. [2023-01-27 23:39:26,995 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 98 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2023-01-27 23:39:26,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 540 flow [2023-01-27 23:39:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2023-01-27 23:39:26,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42212825933756165 [2023-01-27 23:39:26,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2023-01-27 23:39:26,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2023-01-27 23:39:26,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:26,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2023-01-27 23:39:27,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 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 23:39:27,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:27,005 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:27,005 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 186 flow. Second operand 6 states and 1198 transitions. [2023-01-27 23:39:27,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 540 flow [2023-01-27 23:39:27,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 123 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:27,008 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 278 flow [2023-01-27 23:39:27,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-01-27 23:39:27,009 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-01-27 23:39:27,009 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 278 flow [2023-01-27 23:39:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 23:39:27,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:27,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:27,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:39:27,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:27,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash -507576723, now seen corresponding path program 2 times [2023-01-27 23:39:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199019437] [2023-01-27 23:39:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:27,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:27,508 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 23:39:27,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:27,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199019437] [2023-01-27 23:39:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199019437] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:27,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330944444] [2023-01-27 23:39:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:27,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 473 [2023-01-27 23:39:27,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 23:39:27,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:27,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 473 [2023-01-27 23:39:27,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:27,976 INFO L130 PetriNetUnfolder]: 1970/3340 cut-off events. [2023-01-27 23:39:27,976 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2023-01-27 23:39:27,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 3340 events. 1970/3340 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16276 event pairs, 827 based on Foata normal form. 17/3010 useless extension candidates. Maximal degree in co-relation 7287. Up to 2536 conditions per place. [2023-01-27 23:39:27,987 INFO L137 encePairwiseOnDemand]: 465/473 looper letters, 100 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2023-01-27 23:39:27,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 639 flow [2023-01-27 23:39:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-01-27 23:39:27,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42177589852008457 [2023-01-27 23:39:27,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:27,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-01-27 23:39:27,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 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 23:39:27,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:27,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 473.0) internal successors, (3311), 7 states have internal predecessors, (3311), 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 23:39:27,996 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 278 flow. Second operand 6 states and 1197 transitions. [2023-01-27 23:39:27,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 639 flow [2023-01-27 23:39:27,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 623 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:28,001 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 352 flow [2023-01-27 23:39:28,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2023-01-27 23:39:28,001 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-01-27 23:39:28,002 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 352 flow [2023-01-27 23:39:28,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 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 23:39:28,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:28,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:28,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:39:28,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:28,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1152821177, now seen corresponding path program 3 times [2023-01-27 23:39:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713600604] [2023-01-27 23:39:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:28,630 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 23:39:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713600604] [2023-01-27 23:39:28,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713600604] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 23:39:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965986810] [2023-01-27 23:39:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:28,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 23:39:28,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 23:39:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:39:28,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:28,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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 23:39:28,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:28,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:28,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:29,497 INFO L130 PetriNetUnfolder]: 2695/4560 cut-off events. [2023-01-27 23:39:29,498 INFO L131 PetriNetUnfolder]: For 1111/1111 co-relation queries the response was YES. [2023-01-27 23:39:29,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 4560 events. 2695/4560 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 23995 event pairs, 572 based on Foata normal form. 0/4080 useless extension candidates. Maximal degree in co-relation 10088. Up to 2481 conditions per place. [2023-01-27 23:39:29,519 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 156 selfloop transitions, 26 changer transitions 3/193 dead transitions. [2023-01-27 23:39:29,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 193 transitions, 982 flow [2023-01-27 23:39:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1739 transitions. [2023-01-27 23:39:29,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085036410617806 [2023-01-27 23:39:29,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1739 transitions. [2023-01-27 23:39:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1739 transitions. [2023-01-27 23:39:29,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:29,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1739 transitions. [2023-01-27 23:39:29,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.22222222222223) internal successors, (1739), 9 states have internal predecessors, (1739), 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 23:39:29,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:29,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:29,530 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 352 flow. Second operand 9 states and 1739 transitions. [2023-01-27 23:39:29,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 193 transitions, 982 flow [2023-01-27 23:39:29,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 193 transitions, 972 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:29,535 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 467 flow [2023-01-27 23:39:29,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-01-27 23:39:29,536 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-01-27 23:39:29,536 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 467 flow [2023-01-27 23:39:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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 23:39:29,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:29,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:39:29,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:29,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 454650260, now seen corresponding path program 1 times [2023-01-27 23:39:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803891324] [2023-01-27 23:39:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:29,946 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 23:39:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803891324] [2023-01-27 23:39:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803891324] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:29,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 23:39:29,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587843696] [2023-01-27 23:39:29,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 23:39:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 23:39:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:39:29,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:29,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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 23:39:29,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:29,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:29,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:30,393 INFO L130 PetriNetUnfolder]: 2672/4539 cut-off events. [2023-01-27 23:39:30,393 INFO L131 PetriNetUnfolder]: For 2260/2260 co-relation queries the response was YES. [2023-01-27 23:39:30,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 4539 events. 2672/4539 cut-off events. For 2260/2260 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23899 event pairs, 1905 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 10674. Up to 4236 conditions per place. [2023-01-27 23:39:30,420 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 88 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2023-01-27 23:39:30,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 739 flow [2023-01-27 23:39:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1647 transitions. [2023-01-27 23:39:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-01-27 23:39:30,424 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1647 transitions. [2023-01-27 23:39:30,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1647 transitions. [2023-01-27 23:39:30,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:30,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1647 transitions. [2023-01-27 23:39:30,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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 23:39:30,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:30,431 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:30,431 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 467 flow. Second operand 9 states and 1647 transitions. [2023-01-27 23:39:30,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 739 flow [2023-01-27 23:39:30,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 706 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:30,440 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 538 flow [2023-01-27 23:39:30,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=538, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2023-01-27 23:39:30,441 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-01-27 23:39:30,441 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 538 flow [2023-01-27 23:39:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 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 23:39:30,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:30,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:39:30,442 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:30,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash -535562244, now seen corresponding path program 1 times [2023-01-27 23:39:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499613629] [2023-01-27 23:39:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:30,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:30,490 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 23:39:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499613629] [2023-01-27 23:39:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499613629] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:30,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:39:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036041149] [2023-01-27 23:39:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:30,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:30,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 473 [2023-01-27 23:39:30,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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 23:39:30,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:30,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 473 [2023-01-27 23:39:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:30,737 INFO L130 PetriNetUnfolder]: 1873/3209 cut-off events. [2023-01-27 23:39:30,737 INFO L131 PetriNetUnfolder]: For 709/732 co-relation queries the response was YES. [2023-01-27 23:39:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 3209 events. 1873/3209 cut-off events. For 709/732 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14092 event pairs, 1026 based on Foata normal form. 23/2790 useless extension candidates. Maximal degree in co-relation 7155. Up to 1596 conditions per place. [2023-01-27 23:39:30,751 INFO L137 encePairwiseOnDemand]: 469/473 looper letters, 95 selfloop transitions, 3 changer transitions 4/114 dead transitions. [2023-01-27 23:39:30,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 700 flow [2023-01-27 23:39:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-01-27 23:39:30,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630725863284003 [2023-01-27 23:39:30,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-01-27 23:39:30,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-01-27 23:39:30,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:30,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-01-27 23:39:30,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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 23:39:30,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:30,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:30,757 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 538 flow. Second operand 3 states and 799 transitions. [2023-01-27 23:39:30,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 700 flow [2023-01-27 23:39:30,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 114 transitions, 620 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-27 23:39:30,761 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 374 flow [2023-01-27 23:39:30,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-01-27 23:39:30,763 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 33 predicate places. [2023-01-27 23:39:30,763 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 374 flow [2023-01-27 23:39:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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 23:39:30,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:30,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:39:30,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:30,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953527, now seen corresponding path program 1 times [2023-01-27 23:39:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700430026] [2023-01-27 23:39:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:31,523 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 23:39:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700430026] [2023-01-27 23:39:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700430026] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:31,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:31,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833783847] [2023-01-27 23:39:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:31,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:31,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:31,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:31,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 374 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:31,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:31,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:32,464 INFO L130 PetriNetUnfolder]: 1880/3301 cut-off events. [2023-01-27 23:39:32,464 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-01-27 23:39:32,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 3301 events. 1880/3301 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 15059 event pairs, 1161 based on Foata normal form. 0/2864 useless extension candidates. Maximal degree in co-relation 7281. Up to 2482 conditions per place. [2023-01-27 23:39:32,476 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 107 selfloop transitions, 28 changer transitions 11/155 dead transitions. [2023-01-27 23:39:32,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 155 transitions, 842 flow [2023-01-27 23:39:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 23:39:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 23:39:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1829 transitions. [2023-01-27 23:39:32,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3866807610993658 [2023-01-27 23:39:32,481 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1829 transitions. [2023-01-27 23:39:32,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1829 transitions. [2023-01-27 23:39:32,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:32,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1829 transitions. [2023-01-27 23:39:32,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 182.9) internal successors, (1829), 10 states have internal predecessors, (1829), 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 23:39:32,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 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 23:39:32,489 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 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 23:39:32,489 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 374 flow. Second operand 10 states and 1829 transitions. [2023-01-27 23:39:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 155 transitions, 842 flow [2023-01-27 23:39:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 839 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:32,494 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 523 flow [2023-01-27 23:39:32,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2023-01-27 23:39:32,494 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 47 predicate places. [2023-01-27 23:39:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 523 flow [2023-01-27 23:39:32,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:32,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:32,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:32,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:39:32,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:32,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1279417377, now seen corresponding path program 2 times [2023-01-27 23:39:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174637530] [2023-01-27 23:39:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:32,997 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 23:39:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174637530] [2023-01-27 23:39:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174637530] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:32,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346574494] [2023-01-27 23:39:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:32,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:32,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:32,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:33,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:33,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:33,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:33,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,585 INFO L130 PetriNetUnfolder]: 1856/3274 cut-off events. [2023-01-27 23:39:33,585 INFO L131 PetriNetUnfolder]: For 1040/1040 co-relation queries the response was YES. [2023-01-27 23:39:33,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3274 events. 1856/3274 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14936 event pairs, 544 based on Foata normal form. 9/2844 useless extension candidates. Maximal degree in co-relation 7560. Up to 2012 conditions per place. [2023-01-27 23:39:33,601 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 96 selfloop transitions, 30 changer transitions 10/145 dead transitions. [2023-01-27 23:39:33,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 145 transitions, 912 flow [2023-01-27 23:39:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1646 transitions. [2023-01-27 23:39:33,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38665727037820063 [2023-01-27 23:39:33,604 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1646 transitions. [2023-01-27 23:39:33,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1646 transitions. [2023-01-27 23:39:33,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1646 transitions. [2023-01-27 23:39:33,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 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 23:39:33,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:33,611 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:33,611 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 523 flow. Second operand 9 states and 1646 transitions. [2023-01-27 23:39:33,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 145 transitions, 912 flow [2023-01-27 23:39:33,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 853 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:33,617 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 563 flow [2023-01-27 23:39:33,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=563, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2023-01-27 23:39:33,618 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2023-01-27 23:39:33,618 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 563 flow [2023-01-27 23:39:33,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:33,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:39:33,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:33,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939803, now seen corresponding path program 3 times [2023-01-27 23:39:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248183690] [2023-01-27 23:39:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:34,166 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 23:39:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248183690] [2023-01-27 23:39:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248183690] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788456696] [2023-01-27 23:39:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:34,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:34,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:34,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:34,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:34,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:34,927 INFO L130 PetriNetUnfolder]: 1990/3521 cut-off events. [2023-01-27 23:39:34,927 INFO L131 PetriNetUnfolder]: For 1164/1164 co-relation queries the response was YES. [2023-01-27 23:39:34,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8234 conditions, 3521 events. 1990/3521 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16710 event pairs, 469 based on Foata normal form. 0/3049 useless extension candidates. Maximal degree in co-relation 8207. Up to 1753 conditions per place. [2023-01-27 23:39:34,945 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 103 selfloop transitions, 37 changer transitions 13/162 dead transitions. [2023-01-27 23:39:34,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 1037 flow [2023-01-27 23:39:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 23:39:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 23:39:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1830 transitions. [2023-01-27 23:39:34,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-01-27 23:39:34,949 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1830 transitions. [2023-01-27 23:39:34,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1830 transitions. [2023-01-27 23:39:34,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:34,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1830 transitions. [2023-01-27 23:39:34,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 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 23:39:34,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 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 23:39:34,957 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 473.0) internal successors, (5203), 11 states have internal predecessors, (5203), 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 23:39:34,957 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 563 flow. Second operand 10 states and 1830 transitions. [2023-01-27 23:39:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 1037 flow [2023-01-27 23:39:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 162 transitions, 990 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 23:39:34,965 INFO L231 Difference]: Finished difference. Result has 117 places, 97 transitions, 642 flow [2023-01-27 23:39:34,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2023-01-27 23:39:34,966 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2023-01-27 23:39:34,966 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 97 transitions, 642 flow [2023-01-27 23:39:34,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:34,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:34,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:39:34,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:34,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1213258613, now seen corresponding path program 4 times [2023-01-27 23:39:34,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:34,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047792801] [2023-01-27 23:39:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:34,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:35,473 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 23:39:35,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:35,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047792801] [2023-01-27 23:39:35,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047792801] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:35,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:35,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:35,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255992482] [2023-01-27 23:39:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:35,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:35,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:35,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:35,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:35,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 97 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:35,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:35,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:35,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:36,037 INFO L130 PetriNetUnfolder]: 2003/3536 cut-off events. [2023-01-27 23:39:36,038 INFO L131 PetriNetUnfolder]: For 1403/1403 co-relation queries the response was YES. [2023-01-27 23:39:36,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 3536 events. 2003/3536 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 16612 event pairs, 526 based on Foata normal form. 0/3057 useless extension candidates. Maximal degree in co-relation 8469. Up to 1753 conditions per place. [2023-01-27 23:39:36,057 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 95 selfloop transitions, 35 changer transitions 9/148 dead transitions. [2023-01-27 23:39:36,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1041 flow [2023-01-27 23:39:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1642 transitions. [2023-01-27 23:39:36,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571764153159505 [2023-01-27 23:39:36,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1642 transitions. [2023-01-27 23:39:36,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1642 transitions. [2023-01-27 23:39:36,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:36,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1642 transitions. [2023-01-27 23:39:36,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.44444444444446) internal successors, (1642), 9 states have internal predecessors, (1642), 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 23:39:36,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:36,067 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:36,067 INFO L175 Difference]: Start difference. First operand has 117 places, 97 transitions, 642 flow. Second operand 9 states and 1642 transitions. [2023-01-27 23:39:36,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1041 flow [2023-01-27 23:39:36,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 990 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-01-27 23:39:36,076 INFO L231 Difference]: Finished difference. Result has 119 places, 98 transitions, 682 flow [2023-01-27 23:39:36,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=119, PETRI_TRANSITIONS=98} [2023-01-27 23:39:36,077 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-01-27 23:39:36,077 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 682 flow [2023-01-27 23:39:36,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:36,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:36,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:36,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 23:39:36,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:36,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1209251243, now seen corresponding path program 5 times [2023-01-27 23:39:36,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:36,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442107628] [2023-01-27 23:39:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:36,591 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 23:39:36,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:36,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442107628] [2023-01-27 23:39:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442107628] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:36,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:36,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:36,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66020500] [2023-01-27 23:39:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:36,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:36,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 473 [2023-01-27 23:39:36,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 682 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:36,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:36,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 473 [2023-01-27 23:39:36,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:37,121 INFO L130 PetriNetUnfolder]: 1990/3505 cut-off events. [2023-01-27 23:39:37,121 INFO L131 PetriNetUnfolder]: For 1594/1594 co-relation queries the response was YES. [2023-01-27 23:39:37,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8548 conditions, 3505 events. 1990/3505 cut-off events. For 1594/1594 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 16354 event pairs, 515 based on Foata normal form. 0/3037 useless extension candidates. Maximal degree in co-relation 8518. Up to 1753 conditions per place. [2023-01-27 23:39:37,144 INFO L137 encePairwiseOnDemand]: 463/473 looper letters, 93 selfloop transitions, 35 changer transitions 10/146 dead transitions. [2023-01-27 23:39:37,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 146 transitions, 1065 flow [2023-01-27 23:39:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1640 transitions. [2023-01-27 23:39:37,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38524782710829225 [2023-01-27 23:39:37,148 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1640 transitions. [2023-01-27 23:39:37,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1640 transitions. [2023-01-27 23:39:37,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:37,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1640 transitions. [2023-01-27 23:39:37,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.22222222222223) internal successors, (1640), 9 states have internal predecessors, (1640), 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 23:39:37,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:37,157 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 473.0) internal successors, (4730), 10 states have internal predecessors, (4730), 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 23:39:37,157 INFO L175 Difference]: Start difference. First operand has 119 places, 98 transitions, 682 flow. Second operand 9 states and 1640 transitions. [2023-01-27 23:39:37,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 146 transitions, 1065 flow [2023-01-27 23:39:37,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 1024 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:37,172 INFO L231 Difference]: Finished difference. Result has 119 places, 96 transitions, 703 flow [2023-01-27 23:39:37,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=703, PETRI_PLACES=119, PETRI_TRANSITIONS=96} [2023-01-27 23:39:37,174 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2023-01-27 23:39:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 703 flow [2023-01-27 23:39:37,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 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 23:39:37,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:37,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 23:39:37,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:37,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1942684503, now seen corresponding path program 1 times [2023-01-27 23:39:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:37,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335175826] [2023-01-27 23:39:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:37,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:37,263 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 23:39:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335175826] [2023-01-27 23:39:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335175826] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:37,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889901268] [2023-01-27 23:39:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:37,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 473 [2023-01-27 23:39:37,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 23:39:37,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:37,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 473 [2023-01-27 23:39:37,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:37,476 INFO L130 PetriNetUnfolder]: 1298/2415 cut-off events. [2023-01-27 23:39:37,476 INFO L131 PetriNetUnfolder]: For 1569/1574 co-relation queries the response was YES. [2023-01-27 23:39:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 2415 events. 1298/2415 cut-off events. For 1569/1574 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11433 event pairs, 373 based on Foata normal form. 7/2229 useless extension candidates. Maximal degree in co-relation 6273. Up to 1719 conditions per place. [2023-01-27 23:39:37,491 INFO L137 encePairwiseOnDemand]: 467/473 looper letters, 86 selfloop transitions, 6 changer transitions 1/108 dead transitions. [2023-01-27 23:39:37,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 931 flow [2023-01-27 23:39:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2023-01-27 23:39:37,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355884425651868 [2023-01-27 23:39:37,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 760 transitions. [2023-01-27 23:39:37,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 760 transitions. [2023-01-27 23:39:37,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:37,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 760 transitions. [2023-01-27 23:39:37,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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 23:39:37,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:37,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 23:39:37,504 INFO L175 Difference]: Start difference. First operand has 119 places, 96 transitions, 703 flow. Second operand 3 states and 760 transitions. [2023-01-27 23:39:37,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 931 flow [2023-01-27 23:39:37,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 859 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-27 23:39:37,517 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 643 flow [2023-01-27 23:39:37,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=643, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-01-27 23:39:37,518 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 50 predicate places. [2023-01-27 23:39:37,518 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 643 flow [2023-01-27 23:39:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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 23:39:37,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:37,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 23:39:37,518 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:37,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 272642884, now seen corresponding path program 1 times [2023-01-27 23:39:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009793217] [2023-01-27 23:39:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:38,313 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 23:39:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:38,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009793217] [2023-01-27 23:39:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009793217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:38,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:38,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 23:39:38,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102336865] [2023-01-27 23:39:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:39:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:39:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:39:38,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:39:38,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 643 flow. Second operand has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 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 23:39:38,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:38,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:39:38,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:38,914 INFO L130 PetriNetUnfolder]: 1301/2438 cut-off events. [2023-01-27 23:39:38,915 INFO L131 PetriNetUnfolder]: For 1316/1318 co-relation queries the response was YES. [2023-01-27 23:39:38,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 2438 events. 1301/2438 cut-off events. For 1316/1318 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11549 event pairs, 556 based on Foata normal form. 0/2345 useless extension candidates. Maximal degree in co-relation 6320. Up to 1304 conditions per place. [2023-01-27 23:39:38,924 INFO L137 encePairwiseOnDemand]: 461/473 looper letters, 111 selfloop transitions, 31 changer transitions 11/161 dead transitions. [2023-01-27 23:39:38,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 161 transitions, 1130 flow [2023-01-27 23:39:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:39:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:39:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2040 transitions. [2023-01-27 23:39:38,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39208149144724197 [2023-01-27 23:39:38,928 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2040 transitions. [2023-01-27 23:39:38,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2040 transitions. [2023-01-27 23:39:38,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:38,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2040 transitions. [2023-01-27 23:39:38,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.45454545454547) internal successors, (2040), 11 states have internal predecessors, (2040), 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 23:39:38,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 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 23:39:38,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 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 23:39:38,935 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 643 flow. Second operand 11 states and 2040 transitions. [2023-01-27 23:39:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 161 transitions, 1130 flow [2023-01-27 23:39:38,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 161 transitions, 1120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:38,942 INFO L231 Difference]: Finished difference. Result has 125 places, 103 transitions, 760 flow [2023-01-27 23:39:38,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=125, PETRI_TRANSITIONS=103} [2023-01-27 23:39:38,943 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2023-01-27 23:39:38,943 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 103 transitions, 760 flow [2023-01-27 23:39:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.69230769230768) internal successors, (2297), 13 states have internal predecessors, (2297), 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 23:39:38,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:38,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 23:39:38,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:39:38,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1362103832, now seen corresponding path program 2 times [2023-01-27 23:39:38,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:38,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666501217] [2023-01-27 23:39:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:46,040 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 23:39:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666501217] [2023-01-27 23:39:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666501217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:46,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-01-27 23:39:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893694644] [2023-01-27 23:39:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:46,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:39:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:39:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:39:46,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-01-27 23:39:46,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 103 transitions, 760 flow. Second operand has 18 states, 18 states have (on average 173.94444444444446) internal successors, (3131), 18 states have internal predecessors, (3131), 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 23:39:46,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:46,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-01-27 23:39:46,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:03,478 INFO L130 PetriNetUnfolder]: 1854/3507 cut-off events. [2023-01-27 23:40:03,478 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2023-01-27 23:40:03,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 3507 events. 1854/3507 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 18189 event pairs, 484 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8813. Up to 879 conditions per place. [2023-01-27 23:40:03,492 INFO L137 encePairwiseOnDemand]: 456/473 looper letters, 170 selfloop transitions, 48 changer transitions 14/240 dead transitions. [2023-01-27 23:40:03,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 240 transitions, 1572 flow [2023-01-27 23:40:03,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 23:40:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 23:40:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3297 transitions. [2023-01-27 23:40:03,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872445384073291 [2023-01-27 23:40:03,496 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3297 transitions. [2023-01-27 23:40:03,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3297 transitions. [2023-01-27 23:40:03,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:03,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3297 transitions. [2023-01-27 23:40:03,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 183.16666666666666) internal successors, (3297), 18 states have internal predecessors, (3297), 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 23:40:03,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 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 23:40:03,506 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 473.0) internal successors, (8987), 19 states have internal predecessors, (8987), 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 23:40:03,506 INFO L175 Difference]: Start difference. First operand has 125 places, 103 transitions, 760 flow. Second operand 18 states and 3297 transitions. [2023-01-27 23:40:03,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 240 transitions, 1572 flow [2023-01-27 23:40:03,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 240 transitions, 1533 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-27 23:40:03,516 INFO L231 Difference]: Finished difference. Result has 143 places, 114 transitions, 907 flow [2023-01-27 23:40:03,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=907, PETRI_PLACES=143, PETRI_TRANSITIONS=114} [2023-01-27 23:40:03,516 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 80 predicate places. [2023-01-27 23:40:03,516 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 114 transitions, 907 flow [2023-01-27 23:40:03,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 173.94444444444446) internal successors, (3131), 18 states have internal predecessors, (3131), 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 23:40:03,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:03,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:03,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 23:40:03,517 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:40:03,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1629082922, now seen corresponding path program 3 times [2023-01-27 23:40:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:03,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567847456] [2023-01-27 23:40:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:04,962 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 23:40:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567847456] [2023-01-27 23:40:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567847456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:04,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-01-27 23:40:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092769174] [2023-01-27 23:40:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 23:40:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 23:40:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-01-27 23:40:04,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-01-27 23:40:04,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 114 transitions, 907 flow. Second operand has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 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 23:40:04,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:04,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-01-27 23:40:04,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:06,021 INFO L130 PetriNetUnfolder]: 2209/4184 cut-off events. [2023-01-27 23:40:06,022 INFO L131 PetriNetUnfolder]: For 2368/2368 co-relation queries the response was YES. [2023-01-27 23:40:06,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10953 conditions, 4184 events. 2209/4184 cut-off events. For 2368/2368 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 22081 event pairs, 331 based on Foata normal form. 8/4089 useless extension candidates. Maximal degree in co-relation 10912. Up to 1638 conditions per place. [2023-01-27 23:40:06,041 INFO L137 encePairwiseOnDemand]: 457/473 looper letters, 152 selfloop transitions, 46 changer transitions 14/220 dead transitions. [2023-01-27 23:40:06,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 220 transitions, 1630 flow [2023-01-27 23:40:06,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 23:40:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 23:40:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2745 transitions. [2023-01-27 23:40:06,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386892177589852 [2023-01-27 23:40:06,044 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2745 transitions. [2023-01-27 23:40:06,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2745 transitions. [2023-01-27 23:40:06,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:06,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2745 transitions. [2023-01-27 23:40:06,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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 23:40:06,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 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 23:40:06,052 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 473.0) internal successors, (7568), 16 states have internal predecessors, (7568), 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 23:40:06,052 INFO L175 Difference]: Start difference. First operand has 143 places, 114 transitions, 907 flow. Second operand 15 states and 2745 transitions. [2023-01-27 23:40:06,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 220 transitions, 1630 flow [2023-01-27 23:40:06,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 220 transitions, 1526 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-01-27 23:40:06,064 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1000 flow [2023-01-27 23:40:06,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1000, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2023-01-27 23:40:06,065 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 87 predicate places. [2023-01-27 23:40:06,065 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1000 flow [2023-01-27 23:40:06,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 174.05882352941177) internal successors, (2959), 17 states have internal predecessors, (2959), 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 23:40:06,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:06,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:06,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 23:40:06,065 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:40:06,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1056373008, now seen corresponding path program 1 times [2023-01-27 23:40:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:06,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860385789] [2023-01-27 23:40:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:06,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:06,646 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 23:40:06,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860385789] [2023-01-27 23:40:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860385789] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 23:40:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111636667] [2023-01-27 23:40:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:40:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:40:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:40:06,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:40:06,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1000 flow. Second operand has 13 states, 13 states have (on average 176.76923076923077) internal successors, (2298), 13 states have internal predecessors, (2298), 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 23:40:06,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:06,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:40:06,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:07,380 INFO L130 PetriNetUnfolder]: 2479/4685 cut-off events. [2023-01-27 23:40:07,380 INFO L131 PetriNetUnfolder]: For 3306/3308 co-relation queries the response was YES. [2023-01-27 23:40:07,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 4685 events. 2479/4685 cut-off events. For 3306/3308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 25588 event pairs, 473 based on Foata normal form. 18/4587 useless extension candidates. Maximal degree in co-relation 12458. Up to 2385 conditions per place. [2023-01-27 23:40:07,404 INFO L137 encePairwiseOnDemand]: 458/473 looper letters, 145 selfloop transitions, 41 changer transitions 10/204 dead transitions. [2023-01-27 23:40:07,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 204 transitions, 1642 flow [2023-01-27 23:40:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:40:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:40:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2229 transitions. [2023-01-27 23:40:07,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927061310782241 [2023-01-27 23:40:07,406 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2229 transitions. [2023-01-27 23:40:07,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2229 transitions. [2023-01-27 23:40:07,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:07,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2229 transitions. [2023-01-27 23:40:07,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.75) internal successors, (2229), 12 states have internal predecessors, (2229), 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 23:40:07,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 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 23:40:07,412 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 473.0) internal successors, (6149), 13 states have internal predecessors, (6149), 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 23:40:07,412 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1000 flow. Second operand 12 states and 2229 transitions. [2023-01-27 23:40:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 204 transitions, 1642 flow [2023-01-27 23:40:07,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 204 transitions, 1559 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-01-27 23:40:07,428 INFO L231 Difference]: Finished difference. Result has 154 places, 133 transitions, 1113 flow [2023-01-27 23:40:07,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1113, PETRI_PLACES=154, PETRI_TRANSITIONS=133} [2023-01-27 23:40:07,428 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 91 predicate places. [2023-01-27 23:40:07,428 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 133 transitions, 1113 flow [2023-01-27 23:40:07,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.76923076923077) internal successors, (2298), 13 states have internal predecessors, (2298), 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 23:40:07,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:07,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 23:40:07,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:40:07,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1241534900, now seen corresponding path program 2 times [2023-01-27 23:40:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211756925] [2023-01-27 23:40:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:08,144 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 23:40:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211756925] [2023-01-27 23:40:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211756925] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 23:40:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142685264] [2023-01-27 23:40:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:08,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:40:08,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:08,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:40:08,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:40:08,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 473 [2023-01-27 23:40:08,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 133 transitions, 1113 flow. Second operand has 13 states, 13 states have (on average 176.76923076923077) internal successors, (2298), 13 states have internal predecessors, (2298), 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 23:40:08,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:08,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 473 [2023-01-27 23:40:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:08,721 INFO L130 PetriNetUnfolder]: 1622/3067 cut-off events. [2023-01-27 23:40:08,721 INFO L131 PetriNetUnfolder]: For 3514/3514 co-relation queries the response was YES. [2023-01-27 23:40:08,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 3067 events. 1622/3067 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15072 event pairs, 345 based on Foata normal form. 21/3013 useless extension candidates. Maximal degree in co-relation 8777. Up to 1151 conditions per place. [2023-01-27 23:40:08,731 INFO L137 encePairwiseOnDemand]: 462/473 looper letters, 120 selfloop transitions, 34 changer transitions 11/173 dead transitions. [2023-01-27 23:40:08,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 173 transitions, 1444 flow [2023-01-27 23:40:08,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:40:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:40:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2036 transitions. [2023-01-27 23:40:08,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39131270420911013 [2023-01-27 23:40:08,733 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2036 transitions. [2023-01-27 23:40:08,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2036 transitions. [2023-01-27 23:40:08,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:08,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2036 transitions. [2023-01-27 23:40:08,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.0909090909091) internal successors, (2036), 11 states have internal predecessors, (2036), 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 23:40:08,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 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 23:40:08,737 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 473.0) internal successors, (5676), 12 states have internal predecessors, (5676), 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 23:40:08,737 INFO L175 Difference]: Start difference. First operand has 154 places, 133 transitions, 1113 flow. Second operand 11 states and 2036 transitions. [2023-01-27 23:40:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 173 transitions, 1444 flow [2023-01-27 23:40:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 173 transitions, 1344 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-01-27 23:40:08,751 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 944 flow [2023-01-27 23:40:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=944, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2023-01-27 23:40:08,751 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 82 predicate places. [2023-01-27 23:40:08,751 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 944 flow [2023-01-27 23:40:08,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 176.76923076923077) internal successors, (2298), 13 states have internal predecessors, (2298), 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 23:40:08,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:08,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 23:40:08,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:40:08,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -540729123, now seen corresponding path program 1 times [2023-01-27 23:40:08,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:08,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632064926] [2023-01-27 23:40:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:09,696 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 23:40:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:09,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632064926] [2023-01-27 23:40:09,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632064926] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:09,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 23:40:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964574860] [2023-01-27 23:40:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:40:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:40:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-01-27 23:40:09,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 473 [2023-01-27 23:40:09,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 944 flow. Second operand has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 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 23:40:09,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:09,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 473 [2023-01-27 23:40:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:10,311 INFO L130 PetriNetUnfolder]: 1788/3388 cut-off events. [2023-01-27 23:40:10,311 INFO L131 PetriNetUnfolder]: For 3077/3077 co-relation queries the response was YES. [2023-01-27 23:40:10,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9340 conditions, 3388 events. 1788/3388 cut-off events. For 3077/3077 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16770 event pairs, 215 based on Foata normal form. 8/3312 useless extension candidates. Maximal degree in co-relation 9299. Up to 816 conditions per place. [2023-01-27 23:40:10,326 INFO L137 encePairwiseOnDemand]: 460/473 looper letters, 140 selfloop transitions, 42 changer transitions 12/202 dead transitions. [2023-01-27 23:40:10,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 202 transitions, 1544 flow [2023-01-27 23:40:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:40:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:40:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2388 transitions. [2023-01-27 23:40:10,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38835583021629533 [2023-01-27 23:40:10,328 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2388 transitions. [2023-01-27 23:40:10,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2388 transitions. [2023-01-27 23:40:10,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:10,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2388 transitions. [2023-01-27 23:40:10,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 183.69230769230768) internal successors, (2388), 13 states have internal predecessors, (2388), 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 23:40:10,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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 23:40:10,334 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 473.0) internal successors, (6622), 14 states have internal predecessors, (6622), 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 23:40:10,334 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 944 flow. Second operand 13 states and 2388 transitions. [2023-01-27 23:40:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 202 transitions, 1544 flow [2023-01-27 23:40:10,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 202 transitions, 1476 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-01-27 23:40:10,348 INFO L231 Difference]: Finished difference. Result has 149 places, 119 transitions, 994 flow [2023-01-27 23:40:10,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=994, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2023-01-27 23:40:10,349 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 86 predicate places. [2023-01-27 23:40:10,349 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 994 flow [2023-01-27 23:40:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 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 23:40:10,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:10,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 23:40:10,350 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:40:10,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1142379959, now seen corresponding path program 1 times [2023-01-27 23:40:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566075400] [2023-01-27 23:40:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:10,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-01-27 23:51:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 23:51:06,300 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-27 23:51:06,318 INFO L158 Benchmark]: Toolchain (without parser) took 708926.64ms. Allocated memory was 549.5MB in the beginning and 5.0GB in the end (delta: 4.4GB). Free memory was 500.3MB in the beginning and 1.6GB in the end (delta: -1.1GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-27 23:51:06,318 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 333.4MB. Free memory is still 283.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:51:06,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.30ms. Allocated memory is still 549.5MB. Free memory was 499.9MB in the beginning and 470.1MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 23:51:06,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.98ms. Allocated memory is still 549.5MB. Free memory was 469.7MB in the beginning and 466.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 23:51:06,318 INFO L158 Benchmark]: Boogie Preprocessor took 23.04ms. Allocated memory is still 549.5MB. Free memory was 466.7MB in the beginning and 464.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:51:06,319 INFO L158 Benchmark]: RCFGBuilder took 600.41ms. Allocated memory is still 549.5MB. Free memory was 464.6MB in the beginning and 513.6MB in the end (delta: -49.0MB). Peak memory consumption was 27.4MB. Max. memory is 16.0GB. [2023-01-27 23:51:06,319 INFO L158 Benchmark]: TraceAbstraction took 707757.01ms. Allocated memory was 549.5MB in the beginning and 5.0GB in the end (delta: 4.4GB). Free memory was 511.6MB in the beginning and 1.6GB in the end (delta: -1.1GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-27 23:51:06,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 333.4MB. Free memory is still 283.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.30ms. Allocated memory is still 549.5MB. Free memory was 499.9MB in the beginning and 470.1MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.98ms. Allocated memory is still 549.5MB. Free memory was 469.7MB in the beginning and 466.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.04ms. Allocated memory is still 549.5MB. Free memory was 466.7MB in the beginning and 464.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 600.41ms. Allocated memory is still 549.5MB. Free memory was 464.6MB in the beginning and 513.6MB in the end (delta: -49.0MB). Peak memory consumption was 27.4MB. Max. memory is 16.0GB. * TraceAbstraction took 707757.01ms. Allocated memory was 549.5MB in the beginning and 5.0GB in the end (delta: 4.4GB). Free memory was 511.6MB in the beginning and 1.6GB in the end (delta: -1.1GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 239 PlacesBefore, 63 PlacesAfterwards, 247 TransitionsBefore, 66 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 215 TotalNumberOfCompositions, 33075 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16387, independent: 15763, independent conditional: 0, independent unconditional: 15763, dependent: 624, dependent conditional: 0, dependent unconditional: 624, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8632, independent: 8496, independent conditional: 0, independent unconditional: 8496, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16387, independent: 7267, independent conditional: 0, independent unconditional: 7267, dependent: 488, dependent conditional: 0, dependent unconditional: 488, unknown: 8632, unknown conditional: 0, unknown unconditional: 8632] , Statistics on independence cache: Total cache size (in pairs): 481, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-01-27 23:51:06,302 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown [2023-01-27 23:51:06,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-01-27 23:51:06.538 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6633e10c1/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6633e10c1/.metadata/.log.