/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:55:45,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:55:45,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:55:45,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:55:45,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:55:45,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:55:45,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:55:45,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:55:45,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:55:45,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:55:45,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:55:45,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:55:45,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:55:45,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:55:45,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:55:45,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:55:45,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:55:45,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:55:45,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:55:45,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:55:45,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:55:45,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:55:45,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:55:45,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:55:45,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:55:45,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:55:45,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:55:45,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:55:45,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:55:45,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:55:45,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:55:45,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:55:45,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:55:45,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:55:45,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:55:45,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:55:45,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:55:46,002 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:55:46,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:55:46,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:55:46,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:55:46,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:55:46,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:55:46,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:55:46,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:55:46,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:55:46,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:55:46,006 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:55:46,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:55:46,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:55:46,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:55:46,243 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:55:46,243 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:55:46,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-01-27 21:55:47,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:55:47,508 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:55:47,508 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-01-27 21:55:47,514 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36c02695/952614f5040b4398ba1c45c2607dbcd4/FLAG73496e2f4 [2023-01-27 21:55:47,525 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36c02695/952614f5040b4398ba1c45c2607dbcd4 [2023-01-27 21:55:47,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:55:47,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:55:47,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:55:47,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:55:47,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:55:47,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2feb5695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47, skipping insertion in model container [2023-01-27 21:55:47,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:55:47,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:55:47,749 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-01-27 21:55:47,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:55:47,775 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:55:47,813 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-01-27 21:55:47,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:55:47,831 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:55:47,832 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:55:47,838 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:55:47,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47 WrapperNode [2023-01-27 21:55:47,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:55:47,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:55:47,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:55:47,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:55:47,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,899 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 315 [2023-01-27 21:55:47,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:55:47,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:55:47,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:55:47,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:55:47,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:55:47,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:55:47,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:55:47,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:55:47,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (1/1) ... [2023-01-27 21:55:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:55:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:55:47,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:55:48,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:55:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:55:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:55:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:55:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:55:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:55:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:55:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:55:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:55:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:55:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:55:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:55:48,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:55:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:55:48,035 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:55:48,170 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:55:48,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:55:48,512 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:55:48,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:55:48,702 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 21:55:48,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:55:48 BoogieIcfgContainer [2023-01-27 21:55:48,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:55:48,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:55:48,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:55:48,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:55:48,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:55:47" (1/3) ... [2023-01-27 21:55:48,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b67b805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:55:48, skipping insertion in model container [2023-01-27 21:55:48,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:55:47" (2/3) ... [2023-01-27 21:55:48,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b67b805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:55:48, skipping insertion in model container [2023-01-27 21:55:48,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:55:48" (3/3) ... [2023-01-27 21:55:48,714 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-01-27 21:55:48,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:55:48,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:55:48,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:55:48,824 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:55:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 222 transitions, 476 flow [2023-01-27 21:55:48,946 INFO L130 PetriNetUnfolder]: 18/218 cut-off events. [2023-01-27 21:55:48,947 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:55:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 218 events. 18/218 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 118 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-01-27 21:55:48,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 222 transitions, 476 flow [2023-01-27 21:55:48,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 206 transitions, 436 flow [2023-01-27 21:55:48,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:55:48,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 206 transitions, 436 flow [2023-01-27 21:55:48,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 206 transitions, 436 flow [2023-01-27 21:55:48,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 206 transitions, 436 flow [2023-01-27 21:55:49,024 INFO L130 PetriNetUnfolder]: 18/206 cut-off events. [2023-01-27 21:55:49,024 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:55:49,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 206 events. 18/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 117 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-01-27 21:55:49,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 2000 [2023-01-27 21:55:56,189 INFO L134 LiptonReduction]: Checked pairs total: 4193 [2023-01-27 21:55:56,189 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-01-27 21:55:56,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:55:56,205 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;@6a4dfe07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:55:56,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:55:56,212 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2023-01-27 21:55:56,212 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:55:56,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:56,213 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] [2023-01-27 21:55:56,213 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 2 more)] === [2023-01-27 21:55:56,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1509683308, now seen corresponding path program 1 times [2023-01-27 21:55:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612577325] [2023-01-27 21:55:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:56,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:56,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612577325] [2023-01-27 21:55:56,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612577325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:56,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:56,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 21:55:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098914164] [2023-01-27 21:55:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:55:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:55:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:55:56,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 418 [2023-01-27 21:55:56,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:56,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:56,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 418 [2023-01-27 21:55:56,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:57,192 INFO L130 PetriNetUnfolder]: 2606/3582 cut-off events. [2023-01-27 21:55:57,192 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2023-01-27 21:55:57,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 3582 events. 2606/3582 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 16014 event pairs, 498 based on Foata normal form. 1/2284 useless extension candidates. Maximal degree in co-relation 5886. Up to 2275 conditions per place. [2023-01-27 21:55:57,218 INFO L137 encePairwiseOnDemand]: 414/418 looper letters, 47 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-01-27 21:55:57,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 255 flow [2023-01-27 21:55:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:55:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:55:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2023-01-27 21:55:57,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031897926634769 [2023-01-27 21:55:57,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2023-01-27 21:55:57,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2023-01-27 21:55:57,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:57,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2023-01-27 21:55:57,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,257 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 98 flow. Second operand 3 states and 631 transitions. [2023-01-27 21:55:57,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 255 flow [2023-01-27 21:55:57,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:55:57,268 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 101 flow [2023-01-27 21:55:57,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-01-27 21:55:57,273 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2023-01-27 21:55:57,273 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 101 flow [2023-01-27 21:55:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:57,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:57,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:55:57,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:57,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1065530984, now seen corresponding path program 1 times [2023-01-27 21:55:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555147117] [2023-01-27 21:55:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:57,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555147117] [2023-01-27 21:55:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555147117] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:57,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:55:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107975399] [2023-01-27 21:55:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:57,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:55:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:55:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:55:57,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 418 [2023-01-27 21:55:57,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:57,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 418 [2023-01-27 21:55:57,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:57,934 INFO L130 PetriNetUnfolder]: 3843/5059 cut-off events. [2023-01-27 21:55:57,934 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2023-01-27 21:55:57,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11188 conditions, 5059 events. 3843/5059 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22520 event pairs, 982 based on Foata normal form. 120/4225 useless extension candidates. Maximal degree in co-relation 4007. Up to 3577 conditions per place. [2023-01-27 21:55:57,963 INFO L137 encePairwiseOnDemand]: 415/418 looper letters, 58 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-01-27 21:55:57,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 285 flow [2023-01-27 21:55:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:55:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:55:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-01-27 21:55:57,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984051036682616 [2023-01-27 21:55:57,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-01-27 21:55:57,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-01-27 21:55:57,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:57,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-01-27 21:55:57,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,971 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 101 flow. Second operand 3 states and 625 transitions. [2023-01-27 21:55:57,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 285 flow [2023-01-27 21:55:57,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:55:57,973 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 112 flow [2023-01-27 21:55:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-01-27 21:55:57,974 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-01-27 21:55:57,974 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 112 flow [2023-01-27 21:55:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:57,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:57,975 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] [2023-01-27 21:55:57,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:55:57,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:57,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 941262828, now seen corresponding path program 1 times [2023-01-27 21:55:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:57,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355196158] [2023-01-27 21:55:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:55:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355196158] [2023-01-27 21:55:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355196158] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:55:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092698336] [2023-01-27 21:55:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:55:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:55:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:55:58,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 418 [2023-01-27 21:55:58,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:58,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 418 [2023-01-27 21:55:58,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:58,471 INFO L130 PetriNetUnfolder]: 3600/4879 cut-off events. [2023-01-27 21:55:58,471 INFO L131 PetriNetUnfolder]: For 1832/1832 co-relation queries the response was YES. [2023-01-27 21:55:58,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11391 conditions, 4879 events. 3600/4879 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23024 event pairs, 937 based on Foata normal form. 106/4526 useless extension candidates. Maximal degree in co-relation 8167. Up to 3548 conditions per place. [2023-01-27 21:55:58,496 INFO L137 encePairwiseOnDemand]: 415/418 looper letters, 58 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-01-27 21:55:58,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 301 flow [2023-01-27 21:55:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:55:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:55:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-01-27 21:55:58,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49681020733652315 [2023-01-27 21:55:58,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-01-27 21:55:58,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-01-27 21:55:58,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:58,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-01-27 21:55:58,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 418.0) internal successors, (1672), 4 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,503 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 112 flow. Second operand 3 states and 623 transitions. [2023-01-27 21:55:58,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 301 flow [2023-01-27 21:55:58,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:55:58,506 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 124 flow [2023-01-27 21:55:58,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-01-27 21:55:58,507 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-01-27 21:55:58,510 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 124 flow [2023-01-27 21:55:58,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:58,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:55:58,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:58,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1633615522, now seen corresponding path program 1 times [2023-01-27 21:55:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582688472] [2023-01-27 21:55:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:55:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582688472] [2023-01-27 21:55:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582688472] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:58,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:55:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384223105] [2023-01-27 21:55:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:55:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:55:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:55:58,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 418 [2023-01-27 21:55:58,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:58,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:58,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 418 [2023-01-27 21:55:58,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:59,190 INFO L130 PetriNetUnfolder]: 3800/5543 cut-off events. [2023-01-27 21:55:59,191 INFO L131 PetriNetUnfolder]: For 2941/2941 co-relation queries the response was YES. [2023-01-27 21:55:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 5543 events. 3800/5543 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 31121 event pairs, 2883 based on Foata normal form. 191/5572 useless extension candidates. Maximal degree in co-relation 6587. Up to 3495 conditions per place. [2023-01-27 21:55:59,217 INFO L137 encePairwiseOnDemand]: 413/418 looper letters, 87 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-01-27 21:55:59,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 97 transitions, 464 flow [2023-01-27 21:55:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:55:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:55:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2023-01-27 21:55:59,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2023-01-27 21:55:59,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2023-01-27 21:55:59,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2023-01-27 21:55:59,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:59,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2023-01-27 21:55:59,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 418.0) internal successors, (2508), 6 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 418.0) internal successors, (2508), 6 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,228 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 124 flow. Second operand 5 states and 935 transitions. [2023-01-27 21:55:59,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 97 transitions, 464 flow [2023-01-27 21:55:59,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 97 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:55:59,231 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 152 flow [2023-01-27 21:55:59,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-01-27 21:55:59,232 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-01-27 21:55:59,232 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 152 flow [2023-01-27 21:55:59,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:59,233 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] [2023-01-27 21:55:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:55:59,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:59,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1505087545, now seen corresponding path program 1 times [2023-01-27 21:55:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907841640] [2023-01-27 21:55:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:55:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907841640] [2023-01-27 21:55:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907841640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:55:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:55:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:55:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846731578] [2023-01-27 21:55:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:55:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:55:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:55:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:55:59,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 418 [2023-01-27 21:55:59,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:59,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 418 [2023-01-27 21:55:59,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:59,913 INFO L130 PetriNetUnfolder]: 3929/5803 cut-off events. [2023-01-27 21:55:59,913 INFO L131 PetriNetUnfolder]: For 3574/3574 co-relation queries the response was YES. [2023-01-27 21:55:59,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14011 conditions, 5803 events. 3929/5803 cut-off events. For 3574/3574 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 33514 event pairs, 3012 based on Foata normal form. 161/5793 useless extension candidates. Maximal degree in co-relation 11382. Up to 4406 conditions per place. [2023-01-27 21:55:59,935 INFO L137 encePairwiseOnDemand]: 414/418 looper letters, 60 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-01-27 21:55:59,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 364 flow [2023-01-27 21:55:59,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:55:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:55:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2023-01-27 21:55:59,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2023-01-27 21:55:59,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2023-01-27 21:55:59,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2023-01-27 21:55:59,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:59,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2023-01-27 21:55:59,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,944 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 418.0) internal successors, (2090), 5 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,944 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 152 flow. Second operand 4 states and 737 transitions. [2023-01-27 21:55:59,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 364 flow [2023-01-27 21:55:59,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:55:59,947 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 176 flow [2023-01-27 21:55:59,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-01-27 21:55:59,948 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-01-27 21:55:59,948 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 176 flow [2023-01-27 21:55:59,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:59,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:59,949 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] [2023-01-27 21:55:59,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:55:59,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:59,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1928943663, now seen corresponding path program 1 times [2023-01-27 21:55:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:59,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244296771] [2023-01-27 21:55:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244296771] [2023-01-27 21:56:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244296771] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:56:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968817942] [2023-01-27 21:56:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:00,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:56:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:56:00,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:56:00,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:56:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:00,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 21:56:00,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:56:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:00,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:56:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968817942] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:00,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:56:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-01-27 21:56:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098676388] [2023-01-27 21:56:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:00,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:56:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:56:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-27 21:56:00,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:56:00,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:00,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:00,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:56:00,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:02,549 INFO L130 PetriNetUnfolder]: 14993/20562 cut-off events. [2023-01-27 21:56:02,549 INFO L131 PetriNetUnfolder]: For 7255/7255 co-relation queries the response was YES. [2023-01-27 21:56:02,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48266 conditions, 20562 events. 14993/20562 cut-off events. For 7255/7255 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 108887 event pairs, 1082 based on Foata normal form. 372/20934 useless extension candidates. Maximal degree in co-relation 38127. Up to 8096 conditions per place. [2023-01-27 21:56:02,657 INFO L137 encePairwiseOnDemand]: 412/418 looper letters, 129 selfloop transitions, 8 changer transitions 5/142 dead transitions. [2023-01-27 21:56:02,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 142 transitions, 743 flow [2023-01-27 21:56:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:56:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:56:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1197 transitions. [2023-01-27 21:56:02,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-01-27 21:56:02,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1197 transitions. [2023-01-27 21:56:02,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1197 transitions. [2023-01-27 21:56:02,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:02,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1197 transitions. [2023-01-27 21:56:02,663 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 21:56:02,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:02,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:02,669 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 176 flow. Second operand 6 states and 1197 transitions. [2023-01-27 21:56:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 142 transitions, 743 flow [2023-01-27 21:56:02,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 142 transitions, 735 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 21:56:02,676 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 225 flow [2023-01-27 21:56:02,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-01-27 21:56:02,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2023-01-27 21:56:02,679 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 225 flow [2023-01-27 21:56:02,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:02,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:02,680 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] [2023-01-27 21:56:02,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 21:56:02,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 21:56:02,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:02,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2129272553, now seen corresponding path program 2 times [2023-01-27 21:56:02,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:02,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576808835] [2023-01-27 21:56:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:03,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576808835] [2023-01-27 21:56:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576808835] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:56:03,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723088349] [2023-01-27 21:56:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:56:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:56:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:56:03,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:56:03,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:03,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:03,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:56:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:05,538 INFO L130 PetriNetUnfolder]: 17581/24432 cut-off events. [2023-01-27 21:56:05,538 INFO L131 PetriNetUnfolder]: For 15466/15466 co-relation queries the response was YES. [2023-01-27 21:56:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63749 conditions, 24432 events. 17581/24432 cut-off events. For 15466/15466 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 136753 event pairs, 1820 based on Foata normal form. 152/24584 useless extension candidates. Maximal degree in co-relation 51151. Up to 16026 conditions per place. [2023-01-27 21:56:05,682 INFO L137 encePairwiseOnDemand]: 411/418 looper letters, 121 selfloop transitions, 11 changer transitions 26/158 dead transitions. [2023-01-27 21:56:05,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 158 transitions, 862 flow [2023-01-27 21:56:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:56:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:56:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1386 transitions. [2023-01-27 21:56:05,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-01-27 21:56:05,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1386 transitions. [2023-01-27 21:56:05,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1386 transitions. [2023-01-27 21:56:05,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:05,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1386 transitions. [2023-01-27 21:56:05,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:05,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:05,697 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:05,697 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 225 flow. Second operand 7 states and 1386 transitions. [2023-01-27 21:56:05,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 158 transitions, 862 flow [2023-01-27 21:56:05,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 158 transitions, 862 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 21:56:05,723 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 304 flow [2023-01-27 21:56:05,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-01-27 21:56:05,724 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-01-27 21:56:05,724 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 304 flow [2023-01-27 21:56:05,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:05,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:05,725 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] [2023-01-27 21:56:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:56:05,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:05,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1924159533, now seen corresponding path program 1 times [2023-01-27 21:56:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292945726] [2023-01-27 21:56:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:56:06,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292945726] [2023-01-27 21:56:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292945726] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:06,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:06,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:56:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587422886] [2023-01-27 21:56:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:56:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:06,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:56:06,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:56:06,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 418 [2023-01-27 21:56:06,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:06,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:06,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 418 [2023-01-27 21:56:06,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:08,336 INFO L130 PetriNetUnfolder]: 17981/25034 cut-off events. [2023-01-27 21:56:08,337 INFO L131 PetriNetUnfolder]: For 28623/28623 co-relation queries the response was YES. [2023-01-27 21:56:08,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73406 conditions, 25034 events. 17981/25034 cut-off events. For 28623/28623 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 139988 event pairs, 2406 based on Foata normal form. 112/25146 useless extension candidates. Maximal degree in co-relation 61767. Up to 18608 conditions per place. [2023-01-27 21:56:08,439 INFO L137 encePairwiseOnDemand]: 411/418 looper letters, 96 selfloop transitions, 9 changer transitions 38/143 dead transitions. [2023-01-27 21:56:08,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 143 transitions, 872 flow [2023-01-27 21:56:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:56:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:56:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1339 transitions. [2023-01-27 21:56:08,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45762132604237865 [2023-01-27 21:56:08,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1339 transitions. [2023-01-27 21:56:08,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1339 transitions. [2023-01-27 21:56:08,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:08,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1339 transitions. [2023-01-27 21:56:08,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.28571428571428) internal successors, (1339), 7 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:08,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:08,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:08,452 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 304 flow. Second operand 7 states and 1339 transitions. [2023-01-27 21:56:08,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 143 transitions, 872 flow [2023-01-27 21:56:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 868 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 21:56:08,517 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 376 flow [2023-01-27 21:56:08,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2023-01-27 21:56:08,517 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-01-27 21:56:08,518 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 376 flow [2023-01-27 21:56:08,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:08,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:08,518 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] [2023-01-27 21:56:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:56:08,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:08,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1788330293, now seen corresponding path program 2 times [2023-01-27 21:56:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560263568] [2023-01-27 21:56:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:08,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560263568] [2023-01-27 21:56:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560263568] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:08,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:56:08,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359407219] [2023-01-27 21:56:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:56:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:56:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:56:08,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 418 [2023-01-27 21:56:09,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:09,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:09,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 418 [2023-01-27 21:56:09,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:11,586 INFO L130 PetriNetUnfolder]: 19601/27472 cut-off events. [2023-01-27 21:56:11,586 INFO L131 PetriNetUnfolder]: For 42795/42795 co-relation queries the response was YES. [2023-01-27 21:56:11,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89117 conditions, 27472 events. 19601/27472 cut-off events. For 42795/42795 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 158156 event pairs, 2960 based on Foata normal form. 136/27608 useless extension candidates. Maximal degree in co-relation 75314. Up to 18520 conditions per place. [2023-01-27 21:56:11,820 INFO L137 encePairwiseOnDemand]: 409/418 looper letters, 148 selfloop transitions, 38 changer transitions 23/209 dead transitions. [2023-01-27 21:56:11,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 209 transitions, 1513 flow [2023-01-27 21:56:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:56:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:56:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1547 transitions. [2023-01-27 21:56:11,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626196172248804 [2023-01-27 21:56:11,824 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1547 transitions. [2023-01-27 21:56:11,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1547 transitions. [2023-01-27 21:56:11,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:11,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1547 transitions. [2023-01-27 21:56:11,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 193.375) internal successors, (1547), 8 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:11,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:11,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:11,834 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 376 flow. Second operand 8 states and 1547 transitions. [2023-01-27 21:56:11,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 209 transitions, 1513 flow [2023-01-27 21:56:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 1503 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 21:56:11,893 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 774 flow [2023-01-27 21:56:11,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2023-01-27 21:56:11,894 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2023-01-27 21:56:11,894 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 774 flow [2023-01-27 21:56:11,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:11,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:11,895 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] [2023-01-27 21:56:11,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:56:11,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:11,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash -377808973, now seen corresponding path program 3 times [2023-01-27 21:56:11,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804734919] [2023-01-27 21:56:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:56:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804734919] [2023-01-27 21:56:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804734919] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:56:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337714486] [2023-01-27 21:56:12,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:56:12,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:56:12,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:56:12,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:56:12,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:56:12,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 21:56:12,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:56:12,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 21:56:12,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:56:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:12,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:56:12,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337714486] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:12,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:56:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-01-27 21:56:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313632715] [2023-01-27 21:56:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:12,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:56:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:56:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-01-27 21:56:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 418 [2023-01-27 21:56:12,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:12,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:12,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 418 [2023-01-27 21:56:12,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:16,279 INFO L130 PetriNetUnfolder]: 26157/38061 cut-off events. [2023-01-27 21:56:16,279 INFO L131 PetriNetUnfolder]: For 84579/84579 co-relation queries the response was YES. [2023-01-27 21:56:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139075 conditions, 38061 events. 26157/38061 cut-off events. For 84579/84579 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 249278 event pairs, 3864 based on Foata normal form. 868/38929 useless extension candidates. Maximal degree in co-relation 127775. Up to 17760 conditions per place. [2023-01-27 21:56:16,546 INFO L137 encePairwiseOnDemand]: 407/418 looper letters, 189 selfloop transitions, 88 changer transitions 65/342 dead transitions. [2023-01-27 21:56:16,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 342 transitions, 2791 flow [2023-01-27 21:56:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:56:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:56:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2342 transitions. [2023-01-27 21:56:16,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46690590111642744 [2023-01-27 21:56:16,553 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2342 transitions. [2023-01-27 21:56:16,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2342 transitions. [2023-01-27 21:56:16,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:16,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2342 transitions. [2023-01-27 21:56:16,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.16666666666666) internal successors, (2342), 12 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:16,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:16,572 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 418.0) internal successors, (5434), 13 states have internal predecessors, (5434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:16,572 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 774 flow. Second operand 12 states and 2342 transitions. [2023-01-27 21:56:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 342 transitions, 2791 flow [2023-01-27 21:56:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 342 transitions, 2781 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-27 21:56:17,263 INFO L231 Difference]: Finished difference. Result has 110 places, 153 transitions, 1613 flow [2023-01-27 21:56:17,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1613, PETRI_PLACES=110, PETRI_TRANSITIONS=153} [2023-01-27 21:56:17,264 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-01-27 21:56:17,264 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 153 transitions, 1613 flow [2023-01-27 21:56:17,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:17,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:17,265 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] [2023-01-27 21:56:17,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 21:56:17,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 21:56:17,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:17,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash -793589149, now seen corresponding path program 4 times [2023-01-27 21:56:17,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876119335] [2023-01-27 21:56:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:56:17,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:17,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876119335] [2023-01-27 21:56:17,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876119335] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:56:17,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046140000] [2023-01-27 21:56:17,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:56:17,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:56:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:56:17,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:56:17,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:56:17,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:56:17,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:56:17,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 21:56:17,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:56:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:18,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:56:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046140000] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:56:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-01-27 21:56:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278450575] [2023-01-27 21:56:18,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:56:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:56:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:56:18,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 418 [2023-01-27 21:56:18,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 153 transitions, 1613 flow. Second operand has 7 states, 7 states have (on average 179.57142857142858) internal successors, (1257), 7 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:18,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:18,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 418 [2023-01-27 21:56:18,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:22,983 INFO L130 PetriNetUnfolder]: 33411/48113 cut-off events. [2023-01-27 21:56:22,983 INFO L131 PetriNetUnfolder]: For 198778/198778 co-relation queries the response was YES. [2023-01-27 21:56:23,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212332 conditions, 48113 events. 33411/48113 cut-off events. For 198778/198778 co-relation queries the response was YES. Maximal size of possible extension queue 1709. Compared 317835 event pairs, 5428 based on Foata normal form. 1036/49149 useless extension candidates. Maximal degree in co-relation 194249. Up to 13430 conditions per place. [2023-01-27 21:56:23,407 INFO L137 encePairwiseOnDemand]: 411/418 looper letters, 312 selfloop transitions, 142 changer transitions 8/462 dead transitions. [2023-01-27 21:56:23,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 462 transitions, 5526 flow [2023-01-27 21:56:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:56:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:56:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1549 transitions. [2023-01-27 21:56:23,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632177033492823 [2023-01-27 21:56:23,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1549 transitions. [2023-01-27 21:56:23,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1549 transitions. [2023-01-27 21:56:23,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:23,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1549 transitions. [2023-01-27 21:56:23,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:23,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:23,421 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:23,421 INFO L175 Difference]: Start difference. First operand has 110 places, 153 transitions, 1613 flow. Second operand 8 states and 1549 transitions. [2023-01-27 21:56:23,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 462 transitions, 5526 flow [2023-01-27 21:56:25,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 462 transitions, 5369 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 21:56:25,266 INFO L231 Difference]: Finished difference. Result has 115 places, 244 transitions, 3144 flow [2023-01-27 21:56:25,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3144, PETRI_PLACES=115, PETRI_TRANSITIONS=244} [2023-01-27 21:56:25,266 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2023-01-27 21:56:25,266 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 244 transitions, 3144 flow [2023-01-27 21:56:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 179.57142857142858) internal successors, (1257), 7 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:25,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:25,267 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] [2023-01-27 21:56:25,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 21:56:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:56:25,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:25,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1504821695, now seen corresponding path program 5 times [2023-01-27 21:56:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:25,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960195245] [2023-01-27 21:56:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:25,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960195245] [2023-01-27 21:56:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960195245] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:25,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:56:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529003451] [2023-01-27 21:56:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:25,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:56:25,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:56:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:56:25,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 418 [2023-01-27 21:56:25,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 244 transitions, 3144 flow. Second operand has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:25,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:25,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 418 [2023-01-27 21:56:25,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:32,734 INFO L130 PetriNetUnfolder]: 40835/59222 cut-off events. [2023-01-27 21:56:32,734 INFO L131 PetriNetUnfolder]: For 290174/290174 co-relation queries the response was YES. [2023-01-27 21:56:33,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280783 conditions, 59222 events. 40835/59222 cut-off events. For 290174/290174 co-relation queries the response was YES. Maximal size of possible extension queue 2188. Compared 408605 event pairs, 8054 based on Foata normal form. 370/59592 useless extension candidates. Maximal degree in co-relation 258842. Up to 27204 conditions per place. [2023-01-27 21:56:33,185 INFO L137 encePairwiseOnDemand]: 409/418 looper letters, 245 selfloop transitions, 218 changer transitions 59/522 dead transitions. [2023-01-27 21:56:33,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 522 transitions, 6619 flow [2023-01-27 21:56:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:56:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:56:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2129 transitions. [2023-01-27 21:56:33,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46302740321879077 [2023-01-27 21:56:33,192 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2129 transitions. [2023-01-27 21:56:33,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2129 transitions. [2023-01-27 21:56:33,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:33,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2129 transitions. [2023-01-27 21:56:33,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.54545454545453) internal successors, (2129), 11 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:33,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 418.0) internal successors, (5016), 12 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:33,202 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 418.0) internal successors, (5016), 12 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:33,202 INFO L175 Difference]: Start difference. First operand has 115 places, 244 transitions, 3144 flow. Second operand 11 states and 2129 transitions. [2023-01-27 21:56:33,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 522 transitions, 6619 flow [2023-01-27 21:56:35,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 522 transitions, 6380 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 21:56:35,515 INFO L231 Difference]: Finished difference. Result has 130 places, 317 transitions, 4806 flow [2023-01-27 21:56:35,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4806, PETRI_PLACES=130, PETRI_TRANSITIONS=317} [2023-01-27 21:56:35,516 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2023-01-27 21:56:35,516 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 317 transitions, 4806 flow [2023-01-27 21:56:35,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.57142857142858) internal successors, (1250), 7 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:35,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:35,516 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] [2023-01-27 21:56:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 21:56:35,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:35,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1726133945, now seen corresponding path program 6 times [2023-01-27 21:56:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:35,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151165044] [2023-01-27 21:56:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:35,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151165044] [2023-01-27 21:56:35,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151165044] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:35,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:56:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005532742] [2023-01-27 21:56:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:35,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:56:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:56:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:56:35,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:56:35,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 317 transitions, 4806 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:35,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:35,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:56:35,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:56:44,841 INFO L130 PetriNetUnfolder]: 50689/73304 cut-off events. [2023-01-27 21:56:44,841 INFO L131 PetriNetUnfolder]: For 452056/452056 co-relation queries the response was YES. [2023-01-27 21:56:45,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375448 conditions, 73304 events. 50689/73304 cut-off events. For 452056/452056 co-relation queries the response was YES. Maximal size of possible extension queue 2688. Compared 516737 event pairs, 11772 based on Foata normal form. 428/73732 useless extension candidates. Maximal degree in co-relation 352711. Up to 34721 conditions per place. [2023-01-27 21:56:45,794 INFO L137 encePairwiseOnDemand]: 410/418 looper letters, 259 selfloop transitions, 289 changer transitions 17/565 dead transitions. [2023-01-27 21:56:45,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 565 transitions, 8425 flow [2023-01-27 21:56:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:56:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:56:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1595 transitions. [2023-01-27 21:56:45,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2023-01-27 21:56:45,798 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1595 transitions. [2023-01-27 21:56:45,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1595 transitions. [2023-01-27 21:56:45,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:56:45,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1595 transitions. [2023-01-27 21:56:45,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 199.375) internal successors, (1595), 8 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:45,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:45,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:45,806 INFO L175 Difference]: Start difference. First operand has 130 places, 317 transitions, 4806 flow. Second operand 8 states and 1595 transitions. [2023-01-27 21:56:45,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 565 transitions, 8425 flow [2023-01-27 21:56:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 565 transitions, 8381 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-27 21:56:51,514 INFO L231 Difference]: Finished difference. Result has 138 places, 411 transitions, 7436 flow [2023-01-27 21:56:51,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7436, PETRI_PLACES=138, PETRI_TRANSITIONS=411} [2023-01-27 21:56:51,515 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 94 predicate places. [2023-01-27 21:56:51,515 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 411 transitions, 7436 flow [2023-01-27 21:56:51,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:51,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:56:51,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:56:51,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 21:56:51,516 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:56:51,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:56:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 218750575, now seen corresponding path program 7 times [2023-01-27 21:56:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:56:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488369883] [2023-01-27 21:56:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:56:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:56:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:56:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:56:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:56:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488369883] [2023-01-27 21:56:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488369883] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:56:51,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:56:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:56:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12415234] [2023-01-27 21:56:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:56:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:56:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:56:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:56:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:56:51,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 418 [2023-01-27 21:56:51,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 411 transitions, 7436 flow. Second operand has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:56:51,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:56:51,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 418 [2023-01-27 21:56:51,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:02,192 INFO L130 PetriNetUnfolder]: 53895/77102 cut-off events. [2023-01-27 21:57:02,192 INFO L131 PetriNetUnfolder]: For 538912/538912 co-relation queries the response was YES. [2023-01-27 21:57:02,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413945 conditions, 77102 events. 53895/77102 cut-off events. For 538912/538912 co-relation queries the response was YES. Maximal size of possible extension queue 2897. Compared 534721 event pairs, 11653 based on Foata normal form. 360/77462 useless extension candidates. Maximal degree in co-relation 385406. Up to 47672 conditions per place. [2023-01-27 21:57:02,951 INFO L137 encePairwiseOnDemand]: 409/418 looper letters, 301 selfloop transitions, 300 changer transitions 32/633 dead transitions. [2023-01-27 21:57:02,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 633 transitions, 10503 flow [2023-01-27 21:57:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 21:57:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 21:57:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1937 transitions. [2023-01-27 21:57:02,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46339712918660286 [2023-01-27 21:57:02,955 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1937 transitions. [2023-01-27 21:57:02,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1937 transitions. [2023-01-27 21:57:02,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:02,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1937 transitions. [2023-01-27 21:57:02,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 193.7) internal successors, (1937), 10 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:02,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 418.0) internal successors, (4598), 11 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:02,964 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 418.0) internal successors, (4598), 11 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:02,964 INFO L175 Difference]: Start difference. First operand has 138 places, 411 transitions, 7436 flow. Second operand 10 states and 1937 transitions. [2023-01-27 21:57:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 633 transitions, 10503 flow [2023-01-27 21:57:11,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 633 transitions, 10429 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 21:57:11,387 INFO L231 Difference]: Finished difference. Result has 151 places, 446 transitions, 8766 flow [2023-01-27 21:57:11,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=7381, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8766, PETRI_PLACES=151, PETRI_TRANSITIONS=446} [2023-01-27 21:57:11,388 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2023-01-27 21:57:11,388 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 446 transitions, 8766 flow [2023-01-27 21:57:11,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:11,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:11,388 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] [2023-01-27 21:57:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 21:57:11,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:57:11,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1306609249, now seen corresponding path program 8 times [2023-01-27 21:57:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907794791] [2023-01-27 21:57:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:57:11,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:11,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907794791] [2023-01-27 21:57:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907794791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:57:11,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:57:11,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:57:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969878789] [2023-01-27 21:57:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:57:11,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:57:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:57:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:57:11,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:57:11,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 446 transitions, 8766 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:11,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:11,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:57:11,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:22,186 INFO L130 PetriNetUnfolder]: 53039/75758 cut-off events. [2023-01-27 21:57:22,187 INFO L131 PetriNetUnfolder]: For 654208/654208 co-relation queries the response was YES. [2023-01-27 21:57:22,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430689 conditions, 75758 events. 53039/75758 cut-off events. For 654208/654208 co-relation queries the response was YES. Maximal size of possible extension queue 2817. Compared 520535 event pairs, 14748 based on Foata normal form. 180/75938 useless extension candidates. Maximal degree in co-relation 397354. Up to 53139 conditions per place. [2023-01-27 21:57:23,050 INFO L137 encePairwiseOnDemand]: 411/418 looper letters, 233 selfloop transitions, 287 changer transitions 14/534 dead transitions. [2023-01-27 21:57:23,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 534 transitions, 10499 flow [2023-01-27 21:57:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:57:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:57:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-01-27 21:57:23,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732854864433812 [2023-01-27 21:57:23,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-01-27 21:57:23,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-01-27 21:57:23,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:23,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-01-27 21:57:23,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:23,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:23,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:23,058 INFO L175 Difference]: Start difference. First operand has 151 places, 446 transitions, 8766 flow. Second operand 6 states and 1187 transitions. [2023-01-27 21:57:23,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 534 transitions, 10499 flow [2023-01-27 21:57:33,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 534 transitions, 10302 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-01-27 21:57:33,557 INFO L231 Difference]: Finished difference. Result has 156 places, 447 transitions, 9478 flow [2023-01-27 21:57:33,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=8554, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9478, PETRI_PLACES=156, PETRI_TRANSITIONS=447} [2023-01-27 21:57:33,557 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 112 predicate places. [2023-01-27 21:57:33,557 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 447 transitions, 9478 flow [2023-01-27 21:57:33,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:33,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:33,558 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] [2023-01-27 21:57:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 21:57:33,558 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:57:33,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash 787391019, now seen corresponding path program 9 times [2023-01-27 21:57:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:33,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942728103] [2023-01-27 21:57:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:57:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942728103] [2023-01-27 21:57:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942728103] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:57:33,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:57:33,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:57:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748537161] [2023-01-27 21:57:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:57:33,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:57:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:33,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:57:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:57:33,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:57:33,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 447 transitions, 9478 flow. Second operand has 7 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:33,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:33,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:57:33,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:57:43,805 INFO L130 PetriNetUnfolder]: 49997/70532 cut-off events. [2023-01-27 21:57:43,806 INFO L131 PetriNetUnfolder]: For 625286/625286 co-relation queries the response was YES. [2023-01-27 21:57:44,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409806 conditions, 70532 events. 49997/70532 cut-off events. For 625286/625286 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 465256 event pairs, 13766 based on Foata normal form. 716/71248 useless extension candidates. Maximal degree in co-relation 382650. Up to 50351 conditions per place. [2023-01-27 21:57:44,905 INFO L137 encePairwiseOnDemand]: 410/418 looper letters, 360 selfloop transitions, 175 changer transitions 4/539 dead transitions. [2023-01-27 21:57:44,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 539 transitions, 10799 flow [2023-01-27 21:57:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:57:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:57:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1373 transitions. [2023-01-27 21:57:44,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46924128503075874 [2023-01-27 21:57:44,908 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1373 transitions. [2023-01-27 21:57:44,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1373 transitions. [2023-01-27 21:57:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:57:44,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1373 transitions. [2023-01-27 21:57:44,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:44,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:44,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:44,914 INFO L175 Difference]: Start difference. First operand has 156 places, 447 transitions, 9478 flow. Second operand 7 states and 1373 transitions. [2023-01-27 21:57:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 539 transitions, 10799 flow [2023-01-27 21:57:54,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 539 transitions, 10499 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-27 21:57:54,115 INFO L231 Difference]: Finished difference. Result has 160 places, 430 transitions, 9100 flow [2023-01-27 21:57:54,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9100, PETRI_PLACES=160, PETRI_TRANSITIONS=430} [2023-01-27 21:57:54,116 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 116 predicate places. [2023-01-27 21:57:54,116 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 430 transitions, 9100 flow [2023-01-27 21:57:54,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:54,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:57:54,116 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] [2023-01-27 21:57:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 21:57:54,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:57:54,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:57:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1589570313, now seen corresponding path program 10 times [2023-01-27 21:57:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:57:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404454444] [2023-01-27 21:57:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:57:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:57:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:57:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:57:54,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:57:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404454444] [2023-01-27 21:57:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404454444] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:57:54,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:57:54,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:57:54,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642693615] [2023-01-27 21:57:54,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:57:54,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:57:54,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:57:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:57:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:57:54,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:57:54,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 430 transitions, 9100 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:57:54,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:57:54,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:57:54,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:58:05,615 INFO L130 PetriNetUnfolder]: 54524/76693 cut-off events. [2023-01-27 21:58:05,615 INFO L131 PetriNetUnfolder]: For 723390/723390 co-relation queries the response was YES. [2023-01-27 21:58:06,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451353 conditions, 76693 events. 54524/76693 cut-off events. For 723390/723390 co-relation queries the response was YES. Maximal size of possible extension queue 2839. Compared 509756 event pairs, 14406 based on Foata normal form. 716/77409 useless extension candidates. Maximal degree in co-relation 423692. Up to 54981 conditions per place. [2023-01-27 21:58:06,516 INFO L137 encePairwiseOnDemand]: 411/418 looper letters, 268 selfloop transitions, 338 changer transitions 1/607 dead transitions. [2023-01-27 21:58:06,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 607 transitions, 13083 flow [2023-01-27 21:58:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:58:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:58:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1376 transitions. [2023-01-27 21:58:06,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47026657552973344 [2023-01-27 21:58:06,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1376 transitions. [2023-01-27 21:58:06,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1376 transitions. [2023-01-27 21:58:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:58:06,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1376 transitions. [2023-01-27 21:58:06,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.57142857142858) internal successors, (1376), 7 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:06,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:06,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 418.0) internal successors, (3344), 8 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:06,522 INFO L175 Difference]: Start difference. First operand has 160 places, 430 transitions, 9100 flow. Second operand 7 states and 1376 transitions. [2023-01-27 21:58:06,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 607 transitions, 13083 flow [2023-01-27 21:58:19,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 607 transitions, 12701 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 21:58:19,592 INFO L231 Difference]: Finished difference. Result has 166 places, 505 transitions, 11676 flow [2023-01-27 21:58:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11676, PETRI_PLACES=166, PETRI_TRANSITIONS=505} [2023-01-27 21:58:19,593 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 122 predicate places. [2023-01-27 21:58:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 505 transitions, 11676 flow [2023-01-27 21:58:19,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:19,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:58:19,594 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] [2023-01-27 21:58:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 21:58:19,594 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:58:19,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:58:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 571752297, now seen corresponding path program 11 times [2023-01-27 21:58:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:58:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126333333] [2023-01-27 21:58:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:58:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:58:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:58:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:58:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:58:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126333333] [2023-01-27 21:58:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126333333] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:58:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:58:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:58:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903468675] [2023-01-27 21:58:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:58:19,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:58:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:58:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:58:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:58:19,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:58:19,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 505 transitions, 11676 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:19,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:58:19,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:58:19,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:58:31,655 INFO L130 PetriNetUnfolder]: 55186/77509 cut-off events. [2023-01-27 21:58:31,655 INFO L131 PetriNetUnfolder]: For 791506/791506 co-relation queries the response was YES. [2023-01-27 21:58:32,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470610 conditions, 77509 events. 55186/77509 cut-off events. For 791506/791506 co-relation queries the response was YES. Maximal size of possible extension queue 2872. Compared 513256 event pairs, 15250 based on Foata normal form. 624/78133 useless extension candidates. Maximal degree in co-relation 441055. Up to 58781 conditions per place. [2023-01-27 21:58:32,670 INFO L137 encePairwiseOnDemand]: 410/418 looper letters, 225 selfloop transitions, 388 changer transitions 5/618 dead transitions. [2023-01-27 21:58:32,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 618 transitions, 14634 flow [2023-01-27 21:58:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:58:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:58:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1175 transitions. [2023-01-27 21:58:32,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46850079744816586 [2023-01-27 21:58:32,672 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1175 transitions. [2023-01-27 21:58:32,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1175 transitions. [2023-01-27 21:58:32,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:58:32,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1175 transitions. [2023-01-27 21:58:32,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.83333333333334) internal successors, (1175), 6 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:32,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:32,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 418.0) internal successors, (2926), 7 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:32,676 INFO L175 Difference]: Start difference. First operand has 166 places, 505 transitions, 11676 flow. Second operand 6 states and 1175 transitions. [2023-01-27 21:58:32,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 618 transitions, 14634 flow [2023-01-27 21:58:46,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 618 transitions, 14106 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-27 21:58:46,470 INFO L231 Difference]: Finished difference. Result has 170 places, 553 transitions, 13543 flow [2023-01-27 21:58:46,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=10791, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13543, PETRI_PLACES=170, PETRI_TRANSITIONS=553} [2023-01-27 21:58:46,471 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2023-01-27 21:58:46,471 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 553 transitions, 13543 flow [2023-01-27 21:58:46,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:46,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:58:46,471 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] [2023-01-27 21:58:46,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 21:58:46,472 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:58:46,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:58:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2050580217, now seen corresponding path program 12 times [2023-01-27 21:58:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:58:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812819991] [2023-01-27 21:58:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:58:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:58:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:58:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:58:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:58:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812819991] [2023-01-27 21:58:46,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812819991] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:58:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040941590] [2023-01-27 21:58:46,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:58:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:58:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:58:46,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:58:46,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 21:58:46,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 21:58:46,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:58:46,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 21:58:46,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:58:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:58:47,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:58:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:58:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040941590] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:58:47,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:58:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2023-01-27 21:58:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403924810] [2023-01-27 21:58:47,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:58:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 21:58:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:58:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 21:58:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-01-27 21:58:47,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 418 [2023-01-27 21:58:47,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 553 transitions, 13543 flow. Second operand has 18 states, 18 states have (on average 180.11111111111111) internal successors, (3242), 18 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:58:47,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:58:47,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 418 [2023-01-27 21:58:47,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:04,239 INFO L130 PetriNetUnfolder]: 66530/94579 cut-off events. [2023-01-27 21:59:04,239 INFO L131 PetriNetUnfolder]: For 941085/941085 co-relation queries the response was YES. [2023-01-27 21:59:05,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561528 conditions, 94579 events. 66530/94579 cut-off events. For 941085/941085 co-relation queries the response was YES. Maximal size of possible extension queue 3616. Compared 660512 event pairs, 6484 based on Foata normal form. 2940/97519 useless extension candidates. Maximal degree in co-relation 538838. Up to 24972 conditions per place. [2023-01-27 21:59:05,829 INFO L137 encePairwiseOnDemand]: 405/418 looper letters, 1287 selfloop transitions, 437 changer transitions 60/1784 dead transitions. [2023-01-27 21:59:05,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1784 transitions, 38637 flow [2023-01-27 21:59:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 21:59:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 21:59:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6032 transitions. [2023-01-27 21:59:05,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45095693779904306 [2023-01-27 21:59:05,834 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6032 transitions. [2023-01-27 21:59:05,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6032 transitions. [2023-01-27 21:59:05,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:05,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6032 transitions. [2023-01-27 21:59:05,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 188.5) internal successors, (6032), 32 states have internal predecessors, (6032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:05,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 418.0) internal successors, (13794), 33 states have internal predecessors, (13794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:05,849 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 418.0) internal successors, (13794), 33 states have internal predecessors, (13794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:05,849 INFO L175 Difference]: Start difference. First operand has 170 places, 553 transitions, 13543 flow. Second operand 32 states and 6032 transitions. [2023-01-27 21:59:05,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 1784 transitions, 38637 flow [2023-01-27 21:59:23,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1784 transitions, 37022 flow, removed 130 selfloop flow, removed 5 redundant places. [2023-01-27 21:59:23,478 INFO L231 Difference]: Finished difference. Result has 205 places, 849 transitions, 19586 flow [2023-01-27 21:59:23,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=12109, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=19586, PETRI_PLACES=205, PETRI_TRANSITIONS=849} [2023-01-27 21:59:23,479 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 161 predicate places. [2023-01-27 21:59:23,479 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 849 transitions, 19586 flow [2023-01-27 21:59:23,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 180.11111111111111) internal successors, (3242), 18 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:23,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:23,480 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] [2023-01-27 21:59:23,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 21:59:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:23,688 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:23,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1378408297, now seen corresponding path program 3 times [2023-01-27 21:59:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136694695] [2023-01-27 21:59:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:23,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136694695] [2023-01-27 21:59:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136694695] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596072047] [2023-01-27 21:59:23,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:59:23,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:23,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:59:23,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 21:59:24,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 21:59:24,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:59:24,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 21:59:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:24,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:59:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596072047] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:24,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:59:24,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-01-27 21:59:24,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763614584] [2023-01-27 21:59:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:24,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:24,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:24,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:59:24,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 21:59:24,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 849 transitions, 19586 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:24,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:24,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 21:59:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:42,868 INFO L130 PetriNetUnfolder]: 68026/96007 cut-off events. [2023-01-27 21:59:42,869 INFO L131 PetriNetUnfolder]: For 1243860/1243860 co-relation queries the response was YES. [2023-01-27 21:59:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642885 conditions, 96007 events. 68026/96007 cut-off events. For 1243860/1243860 co-relation queries the response was YES. Maximal size of possible extension queue 3817. Compared 669459 event pairs, 8556 based on Foata normal form. 124/96131 useless extension candidates. Maximal degree in co-relation 642784. Up to 28347 conditions per place. [2023-01-27 21:59:44,602 INFO L137 encePairwiseOnDemand]: 410/418 looper letters, 643 selfloop transitions, 533 changer transitions 6/1182 dead transitions. [2023-01-27 21:59:44,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1182 transitions, 25641 flow [2023-01-27 21:59:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:59:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:59:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1587 transitions. [2023-01-27 21:59:44,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47458133971291866 [2023-01-27 21:59:44,604 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1587 transitions. [2023-01-27 21:59:44,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1587 transitions. [2023-01-27 21:59:44,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:44,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1587 transitions. [2023-01-27 21:59:44,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.375) internal successors, (1587), 8 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:44,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:44,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:44,607 INFO L175 Difference]: Start difference. First operand has 205 places, 849 transitions, 19586 flow. Second operand 8 states and 1587 transitions. [2023-01-27 21:59:44,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1182 transitions, 25641 flow [2023-01-27 22:00:14,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1182 transitions, 24676 flow, removed 238 selfloop flow, removed 8 redundant places. [2023-01-27 22:00:14,386 INFO L231 Difference]: Finished difference. Result has 204 places, 937 transitions, 21536 flow [2023-01-27 22:00:14,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=418, PETRI_DIFFERENCE_MINUEND_FLOW=18759, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21536, PETRI_PLACES=204, PETRI_TRANSITIONS=937} [2023-01-27 22:00:14,387 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 160 predicate places. [2023-01-27 22:00:14,387 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 937 transitions, 21536 flow [2023-01-27 22:00:14,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 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 22:00:14,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 22:00:14,387 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] [2023-01-27 22:00:14,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 22:00:14,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:00:14,588 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 22:00:14,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 22:00:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash -243315741, now seen corresponding path program 4 times [2023-01-27 22:00:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 22:00:14,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424296829] [2023-01-27 22:00:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 22:00:14,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 22:00:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 22:00:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 22:00:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424296829] [2023-01-27 22:00:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424296829] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 22:00:14,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 22:00:14,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 22:00:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646170738] [2023-01-27 22:00:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 22:00:14,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 22:00:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 22:00:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 22:00:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 22:00:14,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 418 [2023-01-27 22:00:14,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 937 transitions, 21536 flow. Second operand has 7 states, 7 states have (on average 182.57142857142858) internal successors, (1278), 7 states have internal predecessors, (1278), 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 22:00:14,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 22:00:14,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 418 [2023-01-27 22:00:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand