/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:55:41,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:55:41,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:55:41,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:55:41,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:55:41,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:55:41,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:55:41,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:55:41,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:55:41,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:55:41,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:55:41,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:55:41,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:55:41,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:55:41,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:55:41,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:55:41,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:55:41,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:55:41,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:55:41,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:55:41,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:55:41,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:55:41,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:55:41,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:55:41,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 20:55:41,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:55:41,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:55:41,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:55:41,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:55:41,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:55:41,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:55:41,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:55:41,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:55:41,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:55:41,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:55:41,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:55:41,679 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-NoLbe.epf [2022-09-20 20:55:41,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:55:41,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:55:41,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:55:41,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:55:41,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:55:41,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:55:41,708 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:55:41,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:55:41,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:55:41,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:55:41,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:55:41,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:55:41,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:55:41,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:55:41,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:55:41,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:55:41,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:55:41,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:55:41,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:55:41,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:55:41,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:55:41,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:55:41,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:55:41,883 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:55:41,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2022-09-20 20:55:41,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7041c2da/f027176526b64639a56f6d77c951ee75/FLAG01f218035 [2022-09-20 20:55:42,285 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:55:42,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2022-09-20 20:55:42,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7041c2da/f027176526b64639a56f6d77c951ee75/FLAG01f218035 [2022-09-20 20:55:42,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7041c2da/f027176526b64639a56f6d77c951ee75 [2022-09-20 20:55:42,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:55:42,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:55:42,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:55:42,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:55:42,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:55:42,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681cfe8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42, skipping insertion in model container [2022-09-20 20:55:42,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:55:42,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:55:42,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-09-20 20:55:42,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:55:42,913 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:55:42,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-09-20 20:55:42,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:55:42,947 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:55:42,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42 WrapperNode [2022-09-20 20:55:42,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:55:42,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:55:42,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:55:42,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:55:42,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,975 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 175 [2022-09-20 20:55:42,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:55:42,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:55:42,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:55:42,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:55:42,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:42,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:55:42,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:55:42,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:55:42,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:55:42,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (1/1) ... [2022-09-20 20:55:43,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:55:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:55:43,031 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) [2022-09-20 20:55:43,038 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 [2022-09-20 20:55:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:55:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:55:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:55:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:55:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:55:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:55:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:55:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:55:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:55:43,063 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:55:43,130 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:55:43,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:55:43,330 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:55:43,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:55:43,337 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:55:43,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:55:43 BoogieIcfgContainer [2022-09-20 20:55:43,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:55:43,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:55:43,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:55:43,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:55:43,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:55:42" (1/3) ... [2022-09-20 20:55:43,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521b5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:55:43, skipping insertion in model container [2022-09-20 20:55:43,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:55:42" (2/3) ... [2022-09-20 20:55:43,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3521b5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:55:43, skipping insertion in model container [2022-09-20 20:55:43,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:55:43" (3/3) ... [2022-09-20 20:55:43,345 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-09-20 20:55:43,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:55:43,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:55:43,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:55:43,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 20:55:43,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 227 transitions, 478 flow [2022-09-20 20:55:43,504 INFO L130 PetriNetUnfolder]: 16/224 cut-off events. [2022-09-20 20:55:43,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:55:43,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 224 events. 16/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 505 event pairs, 0 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-09-20 20:55:43,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 227 transitions, 478 flow [2022-09-20 20:55:43,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 213 transitions, 444 flow [2022-09-20 20:55:43,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:55:43,537 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;@509b352a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:55:43,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 20:55:43,567 INFO L130 PetriNetUnfolder]: 16/212 cut-off events. [2022-09-20 20:55:43,567 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:55:43,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:43,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:43,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1080413820, now seen corresponding path program 1 times [2022-09-20 20:55:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754626559] [2022-09-20 20:55:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754626559] [2022-09-20 20:55:43,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754626559] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:43,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:43,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:43,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111962325] [2022-09-20 20:55:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:43,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:43,793 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-09-20 20:55:43,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 444 flow. Second operand has 3 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) [2022-09-20 20:55:43,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:43,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-09-20 20:55:43,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:43,894 INFO L130 PetriNetUnfolder]: 33/580 cut-off events. [2022-09-20 20:55:43,894 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-09-20 20:55:43,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 580 events. 33/580 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3064 event pairs, 7 based on Foata normal form. 34/559 useless extension candidates. Maximal degree in co-relation 435. Up to 23 conditions per place. [2022-09-20 20:55:43,901 INFO L137 encePairwiseOnDemand]: 216/227 looper letters, 17 selfloop transitions, 2 changer transitions 1/213 dead transitions. [2022-09-20 20:55:43,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 213 transitions, 497 flow [2022-09-20 20:55:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2022-09-20 20:55:43,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9574155653450808 [2022-09-20 20:55:43,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2022-09-20 20:55:43,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2022-09-20 20:55:43,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:43,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2022-09-20 20:55:43,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:43,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:43,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:43,926 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 444 flow. Second operand 3 states and 652 transitions. [2022-09-20 20:55:43,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 213 transitions, 497 flow [2022-09-20 20:55:43,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 213 transitions, 475 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:55:43,932 INFO L231 Difference]: Finished difference. Result has 205 places, 207 transitions, 436 flow [2022-09-20 20:55:43,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=205, PETRI_TRANSITIONS=207} [2022-09-20 20:55:43,937 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -2 predicate places. [2022-09-20 20:55:43,937 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 207 transitions, 436 flow [2022-09-20 20:55:43,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-09-20 20:55:43,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:43,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:55:43,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1524013954, now seen corresponding path program 1 times [2022-09-20 20:55:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:43,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188930228] [2022-09-20 20:55:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:44,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188930228] [2022-09-20 20:55:44,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188930228] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:44,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:44,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791791513] [2022-09-20 20:55:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:44,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 227 [2022-09-20 20:55:44,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 207 transitions, 436 flow. Second operand has 3 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) [2022-09-20 20:55:44,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:44,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 227 [2022-09-20 20:55:44,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:44,098 INFO L130 PetriNetUnfolder]: 27/494 cut-off events. [2022-09-20 20:55:44,098 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-09-20 20:55:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 494 events. 27/494 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2295 event pairs, 6 based on Foata normal form. 4/459 useless extension candidates. Maximal degree in co-relation 308. Up to 20 conditions per place. [2022-09-20 20:55:44,108 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 17 selfloop transitions, 4 changer transitions 0/214 dead transitions. [2022-09-20 20:55:44,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 214 transitions, 501 flow [2022-09-20 20:55:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-09-20 20:55:44,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9427312775330396 [2022-09-20 20:55:44,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-09-20 20:55:44,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-09-20 20:55:44,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:44,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-09-20 20:55:44,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,114 INFO L175 Difference]: Start difference. First operand has 205 places, 207 transitions, 436 flow. Second operand 3 states and 642 transitions. [2022-09-20 20:55:44,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 214 transitions, 501 flow [2022-09-20 20:55:44,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 214 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:55:44,121 INFO L231 Difference]: Finished difference. Result has 207 places, 209 transitions, 466 flow [2022-09-20 20:55:44,121 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=207, PETRI_TRANSITIONS=209} [2022-09-20 20:55:44,122 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 0 predicate places. [2022-09-20 20:55:44,122 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 209 transitions, 466 flow [2022-09-20 20:55:44,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-09-20 20:55:44,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:44,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:55:44,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2126313420, now seen corresponding path program 1 times [2022-09-20 20:55:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:44,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187576506] [2022-09-20 20:55:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:44,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:44,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187576506] [2022-09-20 20:55:44,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187576506] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:44,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:44,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606454848] [2022-09-20 20:55:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:44,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:44,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:44,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 227 [2022-09-20 20:55:44,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 209 transitions, 466 flow. Second operand has 3 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) [2022-09-20 20:55:44,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:44,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 227 [2022-09-20 20:55:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:44,319 INFO L130 PetriNetUnfolder]: 61/941 cut-off events. [2022-09-20 20:55:44,319 INFO L131 PetriNetUnfolder]: For 35/42 co-relation queries the response was YES. [2022-09-20 20:55:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 941 events. 61/941 cut-off events. For 35/42 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6601 event pairs, 14 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 662. Up to 54 conditions per place. [2022-09-20 20:55:44,327 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 17 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2022-09-20 20:55:44,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 217 transitions, 531 flow [2022-09-20 20:55:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-09-20 20:55:44,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9397944199706314 [2022-09-20 20:55:44,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:44,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,334 INFO L175 Difference]: Start difference. First operand has 207 places, 209 transitions, 466 flow. Second operand 3 states and 640 transitions. [2022-09-20 20:55:44,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 217 transitions, 531 flow [2022-09-20 20:55:44,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 217 transitions, 519 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 20:55:44,339 INFO L231 Difference]: Finished difference. Result has 209 places, 212 transitions, 492 flow [2022-09-20 20:55:44,339 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=209, PETRI_TRANSITIONS=212} [2022-09-20 20:55:44,356 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 2 predicate places. [2022-09-20 20:55:44,356 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 212 transitions, 492 flow [2022-09-20 20:55:44,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-09-20 20:55:44,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:44,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:44,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:55:44,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -899667582, now seen corresponding path program 2 times [2022-09-20 20:55:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:44,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445087123] [2022-09-20 20:55:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:44,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:44,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:44,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445087123] [2022-09-20 20:55:44,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445087123] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:44,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:44,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:44,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356302735] [2022-09-20 20:55:44,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:44,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:44,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:44,412 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 227 [2022-09-20 20:55:44,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 212 transitions, 492 flow. Second operand has 3 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) [2022-09-20 20:55:44,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:44,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 227 [2022-09-20 20:55:44,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:44,503 INFO L130 PetriNetUnfolder]: 55/894 cut-off events. [2022-09-20 20:55:44,503 INFO L131 PetriNetUnfolder]: For 84/93 co-relation queries the response was YES. [2022-09-20 20:55:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 894 events. 55/894 cut-off events. For 84/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6059 event pairs, 13 based on Foata normal form. 10/836 useless extension candidates. Maximal degree in co-relation 744. Up to 39 conditions per place. [2022-09-20 20:55:44,510 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 22 selfloop transitions, 3 changer transitions 0/220 dead transitions. [2022-09-20 20:55:44,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 220 transitions, 569 flow [2022-09-20 20:55:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-09-20 20:55:44,512 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9397944199706314 [2022-09-20 20:55:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:44,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-09-20 20:55:44,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,515 INFO L175 Difference]: Start difference. First operand has 209 places, 212 transitions, 492 flow. Second operand 3 states and 640 transitions. [2022-09-20 20:55:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 220 transitions, 569 flow [2022-09-20 20:55:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 220 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:55:44,520 INFO L231 Difference]: Finished difference. Result has 211 places, 215 transitions, 518 flow [2022-09-20 20:55:44,520 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=211, PETRI_TRANSITIONS=215} [2022-09-20 20:55:44,521 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 4 predicate places. [2022-09-20 20:55:44,521 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 215 transitions, 518 flow [2022-09-20 20:55:44,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-09-20 20:55:44,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:44,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:44,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:55:44,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 826390254, now seen corresponding path program 1 times [2022-09-20 20:55:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:44,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744546561] [2022-09-20 20:55:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:44,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:44,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744546561] [2022-09-20 20:55:44,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744546561] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:44,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:44,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:55:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504966419] [2022-09-20 20:55:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:44,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:55:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:55:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:55:44,645 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 227 [2022-09-20 20:55:44,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 215 transitions, 518 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:44,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 227 [2022-09-20 20:55:44,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:44,785 INFO L130 PetriNetUnfolder]: 83/685 cut-off events. [2022-09-20 20:55:44,785 INFO L131 PetriNetUnfolder]: For 64/99 co-relation queries the response was YES. [2022-09-20 20:55:44,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 685 events. 83/685 cut-off events. For 64/99 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4758 event pairs, 20 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 657. Up to 103 conditions per place. [2022-09-20 20:55:44,793 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 23 selfloop transitions, 6 changer transitions 4/230 dead transitions. [2022-09-20 20:55:44,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 230 transitions, 622 flow [2022-09-20 20:55:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:55:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:55:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1434 transitions. [2022-09-20 20:55:44,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9024543738200126 [2022-09-20 20:55:44,796 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1434 transitions. [2022-09-20 20:55:44,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1434 transitions. [2022-09-20 20:55:44,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:44,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1434 transitions. [2022-09-20 20:55:44,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,801 INFO L175 Difference]: Start difference. First operand has 211 places, 215 transitions, 518 flow. Second operand 7 states and 1434 transitions. [2022-09-20 20:55:44,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 230 transitions, 622 flow [2022-09-20 20:55:44,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 230 transitions, 613 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-20 20:55:44,807 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 553 flow [2022-09-20 20:55:44,807 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2022-09-20 20:55:44,809 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 14 predicate places. [2022-09-20 20:55:44,809 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 553 flow [2022-09-20 20:55:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:44,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:44,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:55:44,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:44,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1537818566, now seen corresponding path program 1 times [2022-09-20 20:55:44,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:44,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380612723] [2022-09-20 20:55:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:44,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:44,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:44,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380612723] [2022-09-20 20:55:44,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380612723] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:44,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:44,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:44,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251837226] [2022-09-20 20:55:44,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:44,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:44,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:44,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:44,880 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 227 [2022-09-20 20:55:44,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:44,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:44,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 227 [2022-09-20 20:55:44,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:45,064 INFO L130 PetriNetUnfolder]: 100/2097 cut-off events. [2022-09-20 20:55:45,065 INFO L131 PetriNetUnfolder]: For 112/161 co-relation queries the response was YES. [2022-09-20 20:55:45,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2771 conditions, 2097 events. 100/2097 cut-off events. For 112/161 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19149 event pairs, 42 based on Foata normal form. 2/1933 useless extension candidates. Maximal degree in co-relation 2727. Up to 149 conditions per place. [2022-09-20 20:55:45,084 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 18 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2022-09-20 20:55:45,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 227 transitions, 621 flow [2022-09-20 20:55:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2022-09-20 20:55:45,086 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9353891336270191 [2022-09-20 20:55:45,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:45,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,089 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 553 flow. Second operand 3 states and 637 transitions. [2022-09-20 20:55:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 227 transitions, 621 flow [2022-09-20 20:55:45,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 227 transitions, 615 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 20:55:45,096 INFO L231 Difference]: Finished difference. Result has 220 places, 223 transitions, 595 flow [2022-09-20 20:55:45,097 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=220, PETRI_TRANSITIONS=223} [2022-09-20 20:55:45,098 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 13 predicate places. [2022-09-20 20:55:45,098 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 223 transitions, 595 flow [2022-09-20 20:55:45,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:45,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:45,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:55:45,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:45,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1297525812, now seen corresponding path program 1 times [2022-09-20 20:55:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:45,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739150782] [2022-09-20 20:55:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:45,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:45,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739150782] [2022-09-20 20:55:45,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739150782] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:45,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:45,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:55:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838811923] [2022-09-20 20:55:45,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:55:45,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:55:45,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:55:45,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 227 [2022-09-20 20:55:45,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 223 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:45,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 227 [2022-09-20 20:55:45,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:45,313 INFO L130 PetriNetUnfolder]: 82/1723 cut-off events. [2022-09-20 20:55:45,313 INFO L131 PetriNetUnfolder]: For 227/272 co-relation queries the response was YES. [2022-09-20 20:55:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1723 events. 82/1723 cut-off events. For 227/272 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14170 event pairs, 26 based on Foata normal form. 28/1643 useless extension candidates. Maximal degree in co-relation 1697. Up to 100 conditions per place. [2022-09-20 20:55:45,324 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 24 selfloop transitions, 4 changer transitions 0/231 dead transitions. [2022-09-20 20:55:45,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 231 transitions, 679 flow [2022-09-20 20:55:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:55:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:55:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2022-09-20 20:55:45,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9353891336270191 [2022-09-20 20:55:45,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:45,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2022-09-20 20:55:45,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,328 INFO L175 Difference]: Start difference. First operand has 220 places, 223 transitions, 595 flow. Second operand 3 states and 637 transitions. [2022-09-20 20:55:45,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 231 transitions, 679 flow [2022-09-20 20:55:45,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 231 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:55:45,333 INFO L231 Difference]: Finished difference. Result has 222 places, 227 transitions, 631 flow [2022-09-20 20:55:45,333 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=222, PETRI_TRANSITIONS=227} [2022-09-20 20:55:45,334 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 15 predicate places. [2022-09-20 20:55:45,334 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 227 transitions, 631 flow [2022-09-20 20:55:45,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:45,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:55:45,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:45,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2144030332, now seen corresponding path program 1 times [2022-09-20 20:55:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:45,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503875017] [2022-09-20 20:55:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:45,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:45,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503875017] [2022-09-20 20:55:45,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503875017] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:45,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:45,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:55:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765166006] [2022-09-20 20:55:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:55:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:55:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:55:45,405 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 227 [2022-09-20 20:55:45,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 631 flow. Second operand has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:45,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 227 [2022-09-20 20:55:45,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:45,590 INFO L130 PetriNetUnfolder]: 138/1285 cut-off events. [2022-09-20 20:55:45,590 INFO L131 PetriNetUnfolder]: For 197/385 co-relation queries the response was YES. [2022-09-20 20:55:45,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 1285 events. 138/1285 cut-off events. For 197/385 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11070 event pairs, 78 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 1504. Up to 299 conditions per place. [2022-09-20 20:55:45,600 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 17 selfloop transitions, 5 changer transitions 17/245 dead transitions. [2022-09-20 20:55:45,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 245 transitions, 752 flow [2022-09-20 20:55:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:55:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:55:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1837 transitions. [2022-09-20 20:55:45,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8991678903573177 [2022-09-20 20:55:45,604 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1837 transitions. [2022-09-20 20:55:45,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1837 transitions. [2022-09-20 20:55:45,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:45,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1837 transitions. [2022-09-20 20:55:45,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 204.11111111111111) internal successors, (1837), 9 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,611 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,611 INFO L175 Difference]: Start difference. First operand has 222 places, 227 transitions, 631 flow. Second operand 9 states and 1837 transitions. [2022-09-20 20:55:45,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 245 transitions, 752 flow [2022-09-20 20:55:45,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 245 transitions, 740 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-09-20 20:55:45,615 INFO L231 Difference]: Finished difference. Result has 236 places, 228 transitions, 648 flow [2022-09-20 20:55:45,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=236, PETRI_TRANSITIONS=228} [2022-09-20 20:55:45,617 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 29 predicate places. [2022-09-20 20:55:45,617 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 228 transitions, 648 flow [2022-09-20 20:55:45,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:45,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:55:45,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1488079960, now seen corresponding path program 1 times [2022-09-20 20:55:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292475275] [2022-09-20 20:55:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:45,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292475275] [2022-09-20 20:55:45,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292475275] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:45,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:45,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:55:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188799077] [2022-09-20 20:55:45,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:55:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:55:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:55:45,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2022-09-20 20:55:45,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 228 transitions, 648 flow. Second operand has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:45,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:45,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2022-09-20 20:55:45,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:46,004 INFO L130 PetriNetUnfolder]: 443/2624 cut-off events. [2022-09-20 20:55:46,004 INFO L131 PetriNetUnfolder]: For 478/599 co-relation queries the response was YES. [2022-09-20 20:55:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 2624 events. 443/2624 cut-off events. For 478/599 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25049 event pairs, 285 based on Foata normal form. 19/2408 useless extension candidates. Maximal degree in co-relation 4543. Up to 592 conditions per place. [2022-09-20 20:55:46,025 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 33 selfloop transitions, 7 changer transitions 18/257 dead transitions. [2022-09-20 20:55:46,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 257 transitions, 848 flow [2022-09-20 20:55:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:55:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:55:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2012 transitions. [2022-09-20 20:55:46,028 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863436123348017 [2022-09-20 20:55:46,029 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:46,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.2) internal successors, (2012), 10 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,035 INFO L175 Difference]: Start difference. First operand has 236 places, 228 transitions, 648 flow. Second operand 10 states and 2012 transitions. [2022-09-20 20:55:46,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 257 transitions, 848 flow [2022-09-20 20:55:46,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 257 transitions, 841 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 20:55:46,045 INFO L231 Difference]: Finished difference. Result has 246 places, 229 transitions, 681 flow [2022-09-20 20:55:46,045 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=681, PETRI_PLACES=246, PETRI_TRANSITIONS=229} [2022-09-20 20:55:46,046 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 39 predicate places. [2022-09-20 20:55:46,046 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 229 transitions, 681 flow [2022-09-20 20:55:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:46,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:55:46,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1454619201, now seen corresponding path program 1 times [2022-09-20 20:55:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:46,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429816006] [2022-09-20 20:55:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:46,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:46,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429816006] [2022-09-20 20:55:46,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429816006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:46,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:46,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:55:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818416426] [2022-09-20 20:55:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:46,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:55:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:55:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:55:46,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2022-09-20 20:55:46,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 229 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:46,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2022-09-20 20:55:46,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:46,369 INFO L130 PetriNetUnfolder]: 240/1738 cut-off events. [2022-09-20 20:55:46,369 INFO L131 PetriNetUnfolder]: For 598/723 co-relation queries the response was YES. [2022-09-20 20:55:46,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1738 events. 240/1738 cut-off events. For 598/723 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14379 event pairs, 120 based on Foata normal form. 30/1614 useless extension candidates. Maximal degree in co-relation 3044. Up to 273 conditions per place. [2022-09-20 20:55:46,384 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 21 selfloop transitions, 2 changer transitions 38/264 dead transitions. [2022-09-20 20:55:46,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 264 transitions, 930 flow [2022-09-20 20:55:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:55:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:55:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2012 transitions. [2022-09-20 20:55:46,388 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8863436123348017 [2022-09-20 20:55:46,388 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:46,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2012 transitions. [2022-09-20 20:55:46,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.2) internal successors, (2012), 10 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,394 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 227.0) internal successors, (2497), 11 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,394 INFO L175 Difference]: Start difference. First operand has 246 places, 229 transitions, 681 flow. Second operand 10 states and 2012 transitions. [2022-09-20 20:55:46,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 264 transitions, 930 flow [2022-09-20 20:55:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 264 transitions, 912 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-09-20 20:55:46,401 INFO L231 Difference]: Finished difference. Result has 254 places, 226 transitions, 673 flow [2022-09-20 20:55:46,402 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=254, PETRI_TRANSITIONS=226} [2022-09-20 20:55:46,402 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 47 predicate places. [2022-09-20 20:55:46,402 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 226 transitions, 673 flow [2022-09-20 20:55:46,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.5) internal successors, (1588), 8 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:46,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:46,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:55:46,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1761027793, now seen corresponding path program 1 times [2022-09-20 20:55:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:46,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381485440] [2022-09-20 20:55:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:46,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:46,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381485440] [2022-09-20 20:55:46,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381485440] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:46,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:46,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-20 20:55:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755438327] [2022-09-20 20:55:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:46,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-20 20:55:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-20 20:55:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-09-20 20:55:46,771 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-09-20 20:55:46,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 226 transitions, 673 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:46,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:46,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-09-20 20:55:46,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:55:57,668 INFO L130 PetriNetUnfolder]: 16034/36964 cut-off events. [2022-09-20 20:55:57,668 INFO L131 PetriNetUnfolder]: For 9527/9668 co-relation queries the response was YES. [2022-09-20 20:55:57,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73557 conditions, 36964 events. 16034/36964 cut-off events. For 9527/9668 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 376204 event pairs, 3448 based on Foata normal form. 40/35527 useless extension candidates. Maximal degree in co-relation 73524. Up to 4244 conditions per place. [2022-09-20 20:55:58,088 INFO L137 encePairwiseOnDemand]: 191/227 looper letters, 630 selfloop transitions, 151 changer transitions 204/1120 dead transitions. [2022-09-20 20:55:58,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1120 transitions, 5447 flow [2022-09-20 20:55:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-09-20 20:55:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2022-09-20 20:55:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 17617 transitions. [2022-09-20 20:55:58,107 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6748515610036392 [2022-09-20 20:55:58,107 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 17617 transitions. [2022-09-20 20:55:58,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 17617 transitions. [2022-09-20 20:55:58,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:55:58,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 17617 transitions. [2022-09-20 20:55:58,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 153.19130434782608) internal successors, (17617), 115 states have internal predecessors, (17617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:58,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 227.0) internal successors, (26332), 116 states have internal predecessors, (26332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:58,180 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 227.0) internal successors, (26332), 116 states have internal predecessors, (26332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:58,180 INFO L175 Difference]: Start difference. First operand has 254 places, 226 transitions, 673 flow. Second operand 115 states and 17617 transitions. [2022-09-20 20:55:58,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1120 transitions, 5447 flow [2022-09-20 20:55:58,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1120 transitions, 4885 flow, removed 279 selfloop flow, removed 9 redundant places. [2022-09-20 20:55:58,455 INFO L231 Difference]: Finished difference. Result has 455 places, 373 transitions, 1892 flow [2022-09-20 20:55:58,455 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=1892, PETRI_PLACES=455, PETRI_TRANSITIONS=373} [2022-09-20 20:55:58,456 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 248 predicate places. [2022-09-20 20:55:58,456 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 373 transitions, 1892 flow [2022-09-20 20:55:58,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:58,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:55:58,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:55:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:55:58,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:55:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:55:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash -585750115, now seen corresponding path program 2 times [2022-09-20 20:55:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:55:58,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487607826] [2022-09-20 20:55:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:55:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:55:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:55:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:55:58,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:55:58,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487607826] [2022-09-20 20:55:58,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487607826] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:55:58,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:55:58,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-20 20:55:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937192477] [2022-09-20 20:55:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:55:58,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-20 20:55:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:55:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-20 20:55:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-09-20 20:55:58,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-09-20 20:55:58,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 373 transitions, 1892 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:55:58,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:55:58,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-09-20 20:55:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:56:29,912 INFO L130 PetriNetUnfolder]: 40107/86515 cut-off events. [2022-09-20 20:56:29,912 INFO L131 PetriNetUnfolder]: For 1668043/1668084 co-relation queries the response was YES. [2022-09-20 20:56:32,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421180 conditions, 86515 events. 40107/86515 cut-off events. For 1668043/1668084 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 968452 event pairs, 2382 based on Foata normal form. 13/83667 useless extension candidates. Maximal degree in co-relation 421056. Up to 18091 conditions per place. [2022-09-20 20:56:32,789 INFO L137 encePairwiseOnDemand]: 191/227 looper letters, 1243 selfloop transitions, 186 changer transitions 456/2020 dead transitions. [2022-09-20 20:56:32,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 2020 transitions, 23775 flow [2022-09-20 20:56:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-09-20 20:56:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2022-09-20 20:56:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 29395 transitions. [2022-09-20 20:56:32,814 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6709502179817854 [2022-09-20 20:56:32,814 INFO L72 ComplementDD]: Start complementDD. Operand 193 states and 29395 transitions. [2022-09-20 20:56:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 29395 transitions. [2022-09-20 20:56:32,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:56:32,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 193 states and 29395 transitions. [2022-09-20 20:56:32,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 194 states, 193 states have (on average 152.30569948186528) internal successors, (29395), 193 states have internal predecessors, (29395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:32,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 194 states, 194 states have (on average 227.0) internal successors, (44038), 194 states have internal predecessors, (44038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:32,909 INFO L81 ComplementDD]: Finished complementDD. Result has 194 states, 194 states have (on average 227.0) internal successors, (44038), 194 states have internal predecessors, (44038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:32,909 INFO L175 Difference]: Start difference. First operand has 455 places, 373 transitions, 1892 flow. Second operand 193 states and 29395 transitions. [2022-09-20 20:56:32,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 2020 transitions, 23775 flow [2022-09-20 20:56:42,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 2020 transitions, 16645 flow, removed 3541 selfloop flow, removed 46 redundant places. [2022-09-20 20:56:42,989 INFO L231 Difference]: Finished difference. Result has 727 places, 628 transitions, 4820 flow [2022-09-20 20:56:42,989 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=193, PETRI_FLOW=4820, PETRI_PLACES=727, PETRI_TRANSITIONS=628} [2022-09-20 20:56:42,990 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 520 predicate places. [2022-09-20 20:56:42,990 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 628 transitions, 4820 flow [2022-09-20 20:56:42,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:42,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:56:42,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:56:42,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:56:42,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:56:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:56:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1118675783, now seen corresponding path program 3 times [2022-09-20 20:56:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:56:42,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297987820] [2022-09-20 20:56:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:56:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:56:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:56:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:56:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:56:43,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297987820] [2022-09-20 20:56:43,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297987820] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:56:43,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:56:43,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-09-20 20:56:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811814371] [2022-09-20 20:56:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:56:43,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-20 20:56:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:56:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-20 20:56:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-09-20 20:56:43,334 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 227 [2022-09-20 20:56:43,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 628 transitions, 4820 flow. Second operand has 28 states, 28 states have (on average 147.39285714285714) internal successors, (4127), 28 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:56:43,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:56:43,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 227 [2022-09-20 20:56:43,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand