/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/ldv-races/race-3_1-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:42:15,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:42:15,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:42:15,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:42:15,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:42:15,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:42:15,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:42:15,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:42:15,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:42:15,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:42:15,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:42:15,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:42:15,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:42:15,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:42:15,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:42:15,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:42:15,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:42:15,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:42:15,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:42:15,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:42:15,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:42:15,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:42:15,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:42:15,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:42:15,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 20:42:15,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:42:15,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:42:15,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:42:15,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:42:15,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:42:15,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:42:15,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:42:15,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:42:15,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:42:15,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:42:15,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:42:15,906 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 20:42:15,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:42:15,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:42:15,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:42:15,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:42:15,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:42:15,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:42:15,929 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:42:15,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:42:15,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:42:15,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:42:15,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:42:15,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:42:15,933 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:42:15,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:42:15,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:42:16,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:42:16,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:42:16,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:42:16,172 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:42:16,173 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:42:16,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2022-09-20 20:42:16,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad8e0760/e0e9b11a6efb4ddc946b7cf4c0f6d3d4/FLAG76f9a7d5c [2022-09-20 20:42:16,749 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:42:16,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2022-09-20 20:42:16,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad8e0760/e0e9b11a6efb4ddc946b7cf4c0f6d3d4/FLAG76f9a7d5c [2022-09-20 20:42:17,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ad8e0760/e0e9b11a6efb4ddc946b7cf4c0f6d3d4 [2022-09-20 20:42:17,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:42:17,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:42:17,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:42:17,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:42:17,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:42:17,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25da47be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17, skipping insertion in model container [2022-09-20 20:42:17,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:42:17,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:42:17,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-09-20 20:42:17,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:42:17,765 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:42:17,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-09-20 20:42:17,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:42:17,953 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:42:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17 WrapperNode [2022-09-20 20:42:17,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:42:17,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:42:17,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:42:17,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:42:17,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,057 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-09-20 20:42:18,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:42:18,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:42:18,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:42:18,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:42:18,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:42:18,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:42:18,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:42:18,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:42:18,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:18,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:42:18,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:42:18,160 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 20:42:18,168 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 20:42:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:42:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:42:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-09-20 20:42:18,195 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:42:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:42:18,197 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 20:42:18,440 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:42:18,442 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:42:18,639 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:42:18,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:42:18,647 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:42:18,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:42:18 BoogieIcfgContainer [2022-09-20 20:42:18,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:42:18,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:42:18,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:42:18,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:42:18,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:42:17" (1/3) ... [2022-09-20 20:42:18,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b416a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:42:18, skipping insertion in model container [2022-09-20 20:42:18,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (2/3) ... [2022-09-20 20:42:18,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b416a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:42:18, skipping insertion in model container [2022-09-20 20:42:18,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:42:18" (3/3) ... [2022-09-20 20:42:18,657 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-09-20 20:42:18,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:42:18,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-09-20 20:42:18,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:42:18,720 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 20:42:18,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-09-20 20:42:18,822 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2022-09-20 20:42:18,822 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:42:18,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-09-20 20:42:18,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-09-20 20:42:18,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-09-20 20:42:18,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:42:18,851 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;@1ed9d017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:42:18,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-09-20 20:42:18,861 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-09-20 20:42:18,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:42:18,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:18,862 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] [2022-09-20 20:42:18,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -974822883, now seen corresponding path program 1 times [2022-09-20 20:42:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968156825] [2022-09-20 20:42:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:19,338 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 20:42:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968156825] [2022-09-20 20:42:19,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968156825] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:19,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:19,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381332596] [2022-09-20 20:42:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:19,388 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-09-20 20:42:19,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 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 20:42:19,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:19,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-09-20 20:42:19,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:19,754 INFO L130 PetriNetUnfolder]: 361/1044 cut-off events. [2022-09-20 20:42:19,754 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-20 20:42:19,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1044 events. 361/1044 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6057 event pairs, 216 based on Foata normal form. 20/1010 useless extension candidates. Maximal degree in co-relation 1486. Up to 397 conditions per place. [2022-09-20 20:42:19,767 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 53 selfloop transitions, 17 changer transitions 1/176 dead transitions. [2022-09-20 20:42:19,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 506 flow [2022-09-20 20:42:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:42:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:42:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2022-09-20 20:42:19,783 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6466208476517755 [2022-09-20 20:42:19,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2022-09-20 20:42:19,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2022-09-20 20:42:19,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:19,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2022-09-20 20:42:19,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 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 20:42:19,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 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 20:42:19,803 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 194.0) internal successors, (1940), 10 states have internal predecessors, (1940), 0 states have call successors, (0), 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 20:42:19,805 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 372 flow. Second operand 9 states and 1129 transitions. [2022-09-20 20:42:19,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 506 flow [2022-09-20 20:42:19,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:42:19,813 INFO L231 Difference]: Finished difference. Result has 178 places, 169 transitions, 383 flow [2022-09-20 20:42:19,815 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=178, PETRI_TRANSITIONS=169} [2022-09-20 20:42:19,818 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-09-20 20:42:19,818 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 169 transitions, 383 flow [2022-09-20 20:42:19,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 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 20:42:19,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:19,819 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] [2022-09-20 20:42:19,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:42:19,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2102646053, now seen corresponding path program 1 times [2022-09-20 20:42:19,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:19,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547152133] [2022-09-20 20:42:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:19,934 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 20:42:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:19,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547152133] [2022-09-20 20:42:19,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547152133] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:19,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:19,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249145636] [2022-09-20 20:42:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:19,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:19,939 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 194 [2022-09-20 20:42:19,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 169 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 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 20:42:19,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:19,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 194 [2022-09-20 20:42:19,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:20,169 INFO L130 PetriNetUnfolder]: 361/1014 cut-off events. [2022-09-20 20:42:20,169 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-20 20:42:20,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1014 events. 361/1014 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5740 event pairs, 120 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 881. Up to 261 conditions per place. [2022-09-20 20:42:20,176 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 61 selfloop transitions, 18 changer transitions 1/184 dead transitions. [2022-09-20 20:42:20,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 184 transitions, 575 flow [2022-09-20 20:42:20,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:42:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:42:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2022-09-20 20:42:20,180 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6448453608247423 [2022-09-20 20:42:20,181 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2022-09-20 20:42:20,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2022-09-20 20:42:20,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:20,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2022-09-20 20:42:20,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 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 20:42:20,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 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 20:42:20,189 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 194.0) internal successors, (2134), 11 states have internal predecessors, (2134), 0 states have call successors, (0), 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 20:42:20,189 INFO L175 Difference]: Start difference. First operand has 178 places, 169 transitions, 383 flow. Second operand 10 states and 1251 transitions. [2022-09-20 20:42:20,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 184 transitions, 575 flow [2022-09-20 20:42:20,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 546 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-20 20:42:20,195 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 394 flow [2022-09-20 20:42:20,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-09-20 20:42:20,196 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -1 predicate places. [2022-09-20 20:42:20,196 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 394 flow [2022-09-20 20:42:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 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 20:42:20,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:20,197 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] [2022-09-20 20:42:20,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:42:20,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2061215173, now seen corresponding path program 1 times [2022-09-20 20:42:20,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:20,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336049605] [2022-09-20 20:42:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:20,347 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 20:42:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336049605] [2022-09-20 20:42:20,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336049605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:20,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:20,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925668983] [2022-09-20 20:42:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:20,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-09-20 20:42:20,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 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 20:42:20,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:20,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-09-20 20:42:20,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:20,835 INFO L130 PetriNetUnfolder]: 832/2091 cut-off events. [2022-09-20 20:42:20,835 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-09-20 20:42:20,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 2091 events. 832/2091 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13972 event pairs, 169 based on Foata normal form. 32/2090 useless extension candidates. Maximal degree in co-relation 1026. Up to 499 conditions per place. [2022-09-20 20:42:20,849 INFO L137 encePairwiseOnDemand]: 173/194 looper letters, 100 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2022-09-20 20:42:20,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 253 transitions, 878 flow [2022-09-20 20:42:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:42:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:42:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1644 transitions. [2022-09-20 20:42:20,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6518636003172086 [2022-09-20 20:42:20,853 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1644 transitions. [2022-09-20 20:42:20,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1644 transitions. [2022-09-20 20:42:20,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:20,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1644 transitions. [2022-09-20 20:42:20,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.46153846153847) internal successors, (1644), 13 states have internal predecessors, (1644), 0 states have call successors, (0), 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 20:42:20,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 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 20:42:20,863 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 194.0) internal successors, (2716), 14 states have internal predecessors, (2716), 0 states have call successors, (0), 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 20:42:20,863 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 394 flow. Second operand 13 states and 1644 transitions. [2022-09-20 20:42:20,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 253 transitions, 878 flow [2022-09-20 20:42:20,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 253 transitions, 832 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 20:42:20,874 INFO L231 Difference]: Finished difference. Result has 191 places, 205 transitions, 664 flow [2022-09-20 20:42:20,874 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=664, PETRI_PLACES=191, PETRI_TRANSITIONS=205} [2022-09-20 20:42:20,876 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 11 predicate places. [2022-09-20 20:42:20,876 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 205 transitions, 664 flow [2022-09-20 20:42:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 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 20:42:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:20,878 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] [2022-09-20 20:42:20,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:42:20,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash 856568329, now seen corresponding path program 1 times [2022-09-20 20:42:20,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:20,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514160823] [2022-09-20 20:42:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:21,033 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 20:42:21,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:21,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514160823] [2022-09-20 20:42:21,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514160823] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:21,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:21,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:21,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837706185] [2022-09-20 20:42:21,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:21,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:21,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:21,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:21,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 194 [2022-09-20 20:42:21,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 664 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 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 20:42:21,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:21,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 194 [2022-09-20 20:42:21,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:21,654 INFO L130 PetriNetUnfolder]: 1084/2665 cut-off events. [2022-09-20 20:42:21,654 INFO L131 PetriNetUnfolder]: For 10877/10958 co-relation queries the response was YES. [2022-09-20 20:42:21,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 2665 events. 1084/2665 cut-off events. For 10877/10958 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19175 event pairs, 218 based on Foata normal form. 47/2679 useless extension candidates. Maximal degree in co-relation 7850. Up to 732 conditions per place. [2022-09-20 20:42:21,676 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 74 selfloop transitions, 48 changer transitions 69/294 dead transitions. [2022-09-20 20:42:21,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 294 transitions, 1748 flow [2022-09-20 20:42:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:42:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:42:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1395 transitions. [2022-09-20 20:42:21,681 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6537019681349578 [2022-09-20 20:42:21,681 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1395 transitions. [2022-09-20 20:42:21,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1395 transitions. [2022-09-20 20:42:21,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:21,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1395 transitions. [2022-09-20 20:42:21,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.81818181818181) internal successors, (1395), 11 states have internal predecessors, (1395), 0 states have call successors, (0), 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 20:42:21,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:42:21,689 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:42:21,689 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 664 flow. Second operand 11 states and 1395 transitions. [2022-09-20 20:42:21,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 294 transitions, 1748 flow [2022-09-20 20:42:21,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 294 transitions, 1748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:42:21,709 INFO L231 Difference]: Finished difference. Result has 209 places, 211 transitions, 977 flow [2022-09-20 20:42:21,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=977, PETRI_PLACES=209, PETRI_TRANSITIONS=211} [2022-09-20 20:42:21,711 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-09-20 20:42:21,711 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 211 transitions, 977 flow [2022-09-20 20:42:21,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 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 20:42:21,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:21,712 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] [2022-09-20 20:42:21,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:42:21,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1190557847, now seen corresponding path program 1 times [2022-09-20 20:42:21,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:21,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244922759] [2022-09-20 20:42:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:21,849 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 20:42:21,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:21,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244922759] [2022-09-20 20:42:21,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244922759] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:21,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:21,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:42:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705722940] [2022-09-20 20:42:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:21,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:42:21,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:21,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:42:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:42:21,852 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 194 [2022-09-20 20:42:21,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 211 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 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 20:42:21,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:21,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 194 [2022-09-20 20:42:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:21,901 INFO L130 PetriNetUnfolder]: 4/167 cut-off events. [2022-09-20 20:42:21,902 INFO L131 PetriNetUnfolder]: For 459/531 co-relation queries the response was YES. [2022-09-20 20:42:21,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 167 events. 4/167 cut-off events. For 459/531 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 4 based on Foata normal form. 8/173 useless extension candidates. Maximal degree in co-relation 336. Up to 13 conditions per place. [2022-09-20 20:42:21,903 INFO L137 encePairwiseOnDemand]: 189/194 looper letters, 9 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-09-20 20:42:21,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 139 transitions, 436 flow [2022-09-20 20:42:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:42:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:42:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1016 transitions. [2022-09-20 20:42:21,906 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.872852233676976 [2022-09-20 20:42:21,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1016 transitions. [2022-09-20 20:42:21,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1016 transitions. [2022-09-20 20:42:21,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:21,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1016 transitions. [2022-09-20 20:42:21,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 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 20:42:21,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 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 20:42:21,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 194.0) internal successors, (1358), 7 states have internal predecessors, (1358), 0 states have call successors, (0), 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 20:42:21,911 INFO L175 Difference]: Start difference. First operand has 209 places, 211 transitions, 977 flow. Second operand 6 states and 1016 transitions. [2022-09-20 20:42:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 139 transitions, 436 flow [2022-09-20 20:42:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 139 transitions, 316 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-09-20 20:42:21,914 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 298 flow [2022-09-20 20:42:21,915 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-09-20 20:42:21,915 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -28 predicate places. [2022-09-20 20:42:21,916 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 298 flow [2022-09-20 20:42:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 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 20:42:21,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:21,916 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] [2022-09-20 20:42:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:42:21,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:21,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 747769414, now seen corresponding path program 1 times [2022-09-20 20:42:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:21,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21980106] [2022-09-20 20:42:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:21,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:22,497 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 20:42:22,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:22,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21980106] [2022-09-20 20:42:22,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21980106] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:22,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:22,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:22,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907477784] [2022-09-20 20:42:22,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:22,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:22,501 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:22,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 298 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:22,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:22,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:23,399 INFO L130 PetriNetUnfolder]: 460/1290 cut-off events. [2022-09-20 20:42:23,400 INFO L131 PetriNetUnfolder]: For 162/165 co-relation queries the response was YES. [2022-09-20 20:42:23,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 1290 events. 460/1290 cut-off events. For 162/165 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7499 event pairs, 200 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2408. Up to 363 conditions per place. [2022-09-20 20:42:23,406 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 104 selfloop transitions, 25 changer transitions 0/200 dead transitions. [2022-09-20 20:42:23,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 200 transitions, 708 flow [2022-09-20 20:42:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:42:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:42:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-09-20 20:42:23,412 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5269186712485682 [2022-09-20 20:42:23,412 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-09-20 20:42:23,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-09-20 20:42:23,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:23,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-09-20 20:42:23,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 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 20:42:23,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 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 20:42:23,423 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 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 20:42:23,423 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 298 flow. Second operand 18 states and 1840 transitions. [2022-09-20 20:42:23,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 200 transitions, 708 flow [2022-09-20 20:42:23,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 200 transitions, 701 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:42:23,428 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 424 flow [2022-09-20 20:42:23,428 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=424, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-09-20 20:42:23,430 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, -5 predicate places. [2022-09-20 20:42:23,430 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 424 flow [2022-09-20 20:42:23,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:23,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:23,431 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] [2022-09-20 20:42:23,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:42:23,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 462011866, now seen corresponding path program 2 times [2022-09-20 20:42:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:23,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929313359] [2022-09-20 20:42:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:24,032 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 20:42:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:24,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929313359] [2022-09-20 20:42:24,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929313359] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:24,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:24,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26498012] [2022-09-20 20:42:24,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:24,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:24,040 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:24,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 424 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:24,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:24,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:24,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:24,901 INFO L130 PetriNetUnfolder]: 608/1723 cut-off events. [2022-09-20 20:42:24,901 INFO L131 PetriNetUnfolder]: For 832/842 co-relation queries the response was YES. [2022-09-20 20:42:24,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 1723 events. 608/1723 cut-off events. For 832/842 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11541 event pairs, 106 based on Foata normal form. 11/1705 useless extension candidates. Maximal degree in co-relation 3617. Up to 354 conditions per place. [2022-09-20 20:42:24,913 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 124 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2022-09-20 20:42:24,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 226 transitions, 1005 flow [2022-09-20 20:42:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:42:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:42:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1748 transitions. [2022-09-20 20:42:24,917 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.530018192844148 [2022-09-20 20:42:24,917 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1748 transitions. [2022-09-20 20:42:24,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1748 transitions. [2022-09-20 20:42:24,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:24,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1748 transitions. [2022-09-20 20:42:24,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.82352941176471) internal successors, (1748), 17 states have internal predecessors, (1748), 0 states have call successors, (0), 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 20:42:24,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 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 20:42:24,927 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 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 20:42:24,927 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 424 flow. Second operand 17 states and 1748 transitions. [2022-09-20 20:42:24,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 226 transitions, 1005 flow [2022-09-20 20:42:24,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 226 transitions, 992 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 20:42:24,933 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 594 flow [2022-09-20 20:42:24,933 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=594, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2022-09-20 20:42:24,934 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 14 predicate places. [2022-09-20 20:42:24,934 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 594 flow [2022-09-20 20:42:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:24,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:24,935 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] [2022-09-20 20:42:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:42:24,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1335065666, now seen corresponding path program 3 times [2022-09-20 20:42:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:24,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943211053] [2022-09-20 20:42:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:25,364 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 20:42:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943211053] [2022-09-20 20:42:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943211053] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:25,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:25,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:25,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454610244] [2022-09-20 20:42:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:25,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:25,367 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:25,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 594 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:25,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:25,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:25,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:26,444 INFO L130 PetriNetUnfolder]: 830/2448 cut-off events. [2022-09-20 20:42:26,444 INFO L131 PetriNetUnfolder]: For 2354/2382 co-relation queries the response was YES. [2022-09-20 20:42:26,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 2448 events. 830/2448 cut-off events. For 2354/2382 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18300 event pairs, 355 based on Foata normal form. 21/2422 useless extension candidates. Maximal degree in co-relation 5802. Up to 758 conditions per place. [2022-09-20 20:42:26,461 INFO L137 encePairwiseOnDemand]: 172/194 looper letters, 131 selfloop transitions, 38 changer transitions 0/241 dead transitions. [2022-09-20 20:42:26,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 241 transitions, 1283 flow [2022-09-20 20:42:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:42:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:42:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1843 transitions. [2022-09-20 20:42:26,466 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2022-09-20 20:42:26,466 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1843 transitions. [2022-09-20 20:42:26,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1843 transitions. [2022-09-20 20:42:26,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:26,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1843 transitions. [2022-09-20 20:42:26,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.38888888888889) internal successors, (1843), 18 states have internal predecessors, (1843), 0 states have call successors, (0), 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 20:42:26,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 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 20:42:26,476 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 194.0) internal successors, (3686), 19 states have internal predecessors, (3686), 0 states have call successors, (0), 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 20:42:26,476 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 594 flow. Second operand 18 states and 1843 transitions. [2022-09-20 20:42:26,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 241 transitions, 1283 flow [2022-09-20 20:42:26,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 241 transitions, 1253 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:26,497 INFO L231 Difference]: Finished difference. Result has 215 places, 185 transitions, 815 flow [2022-09-20 20:42:26,498 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=815, PETRI_PLACES=215, PETRI_TRANSITIONS=185} [2022-09-20 20:42:26,498 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 35 predicate places. [2022-09-20 20:42:26,499 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 185 transitions, 815 flow [2022-09-20 20:42:26,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:26,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:26,499 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] [2022-09-20 20:42:26,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:42:26,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1985637228, now seen corresponding path program 4 times [2022-09-20 20:42:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:26,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049808861] [2022-09-20 20:42:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:26,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:26,883 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 20:42:26,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:26,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049808861] [2022-09-20 20:42:26,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049808861] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:26,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:26,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492572181] [2022-09-20 20:42:26,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:26,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:26,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:26,887 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:26,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 185 transitions, 815 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:26,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:26,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:28,017 INFO L130 PetriNetUnfolder]: 1021/3123 cut-off events. [2022-09-20 20:42:28,018 INFO L131 PetriNetUnfolder]: For 4404/4446 co-relation queries the response was YES. [2022-09-20 20:42:28,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3123 events. 1021/3123 cut-off events. For 4404/4446 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25461 event pairs, 138 based on Foata normal form. 29/3117 useless extension candidates. Maximal degree in co-relation 7832. Up to 576 conditions per place. [2022-09-20 20:42:28,040 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 168 selfloop transitions, 58 changer transitions 0/298 dead transitions. [2022-09-20 20:42:28,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 298 transitions, 1885 flow [2022-09-20 20:42:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1967 transitions. [2022-09-20 20:42:28,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5336408030385241 [2022-09-20 20:42:28,045 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1967 transitions. [2022-09-20 20:42:28,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1967 transitions. [2022-09-20 20:42:28,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:28,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1967 transitions. [2022-09-20 20:42:28,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.52631578947368) internal successors, (1967), 19 states have internal predecessors, (1967), 0 states have call successors, (0), 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 20:42:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:28,054 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:28,055 INFO L175 Difference]: Start difference. First operand has 215 places, 185 transitions, 815 flow. Second operand 19 states and 1967 transitions. [2022-09-20 20:42:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 298 transitions, 1885 flow [2022-09-20 20:42:28,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 298 transitions, 1850 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-20 20:42:28,073 INFO L231 Difference]: Finished difference. Result has 235 places, 210 transitions, 1217 flow [2022-09-20 20:42:28,073 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1217, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2022-09-20 20:42:28,074 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 55 predicate places. [2022-09-20 20:42:28,075 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 1217 flow [2022-09-20 20:42:28,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:28,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:28,081 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] [2022-09-20 20:42:28,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:42:28,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:28,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash 260541270, now seen corresponding path program 5 times [2022-09-20 20:42:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:28,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417451049] [2022-09-20 20:42:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:28,508 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 20:42:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:28,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417451049] [2022-09-20 20:42:28,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417451049] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:28,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:28,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285390286] [2022-09-20 20:42:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:28,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:28,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:28,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:28,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 1217 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:28,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:28,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:28,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:29,771 INFO L130 PetriNetUnfolder]: 1024/3251 cut-off events. [2022-09-20 20:42:29,771 INFO L131 PetriNetUnfolder]: For 7380/7416 co-relation queries the response was YES. [2022-09-20 20:42:29,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8832 conditions, 3251 events. 1024/3251 cut-off events. For 7380/7416 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 26679 event pairs, 376 based on Foata normal form. 29/3226 useless extension candidates. Maximal degree in co-relation 8789. Up to 817 conditions per place. [2022-09-20 20:42:29,795 INFO L137 encePairwiseOnDemand]: 171/194 looper letters, 175 selfloop transitions, 61 changer transitions 0/308 dead transitions. [2022-09-20 20:42:29,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 308 transitions, 2304 flow [2022-09-20 20:42:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1958 transitions. [2022-09-20 20:42:29,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5311991318502441 [2022-09-20 20:42:29,800 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1958 transitions. [2022-09-20 20:42:29,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1958 transitions. [2022-09-20 20:42:29,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:29,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1958 transitions. [2022-09-20 20:42:29,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.05263157894737) internal successors, (1958), 19 states have internal predecessors, (1958), 0 states have call successors, (0), 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 20:42:29,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:29,809 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:29,809 INFO L175 Difference]: Start difference. First operand has 235 places, 210 transitions, 1217 flow. Second operand 19 states and 1958 transitions. [2022-09-20 20:42:29,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 308 transitions, 2304 flow [2022-09-20 20:42:29,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 308 transitions, 2232 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:29,840 INFO L231 Difference]: Finished difference. Result has 256 places, 231 transitions, 1615 flow [2022-09-20 20:42:29,841 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1615, PETRI_PLACES=256, PETRI_TRANSITIONS=231} [2022-09-20 20:42:29,841 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 76 predicate places. [2022-09-20 20:42:29,841 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 231 transitions, 1615 flow [2022-09-20 20:42:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:29,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:29,842 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] [2022-09-20 20:42:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:42:29,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash -947966482, now seen corresponding path program 6 times [2022-09-20 20:42:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204658346] [2022-09-20 20:42:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:30,417 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 20:42:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:30,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204658346] [2022-09-20 20:42:30,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204658346] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:30,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:30,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:42:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957845219] [2022-09-20 20:42:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:42:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:42:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:42:30,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:42:30,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 231 transitions, 1615 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:42:30,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:30,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:42:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:32,609 INFO L130 PetriNetUnfolder]: 2707/7011 cut-off events. [2022-09-20 20:42:32,610 INFO L131 PetriNetUnfolder]: For 19541/19541 co-relation queries the response was YES. [2022-09-20 20:42:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19568 conditions, 7011 events. 2707/7011 cut-off events. For 19541/19541 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 63835 event pairs, 563 based on Foata normal form. 1/6930 useless extension candidates. Maximal degree in co-relation 19515. Up to 2726 conditions per place. [2022-09-20 20:42:32,654 INFO L137 encePairwiseOnDemand]: 168/194 looper letters, 236 selfloop transitions, 80 changer transitions 0/383 dead transitions. [2022-09-20 20:42:32,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 383 transitions, 3414 flow [2022-09-20 20:42:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1907 transitions. [2022-09-20 20:42:32,658 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5173629951166576 [2022-09-20 20:42:32,658 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1907 transitions. [2022-09-20 20:42:32,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1907 transitions. [2022-09-20 20:42:32,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:32,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1907 transitions. [2022-09-20 20:42:32,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.36842105263158) internal successors, (1907), 19 states have internal predecessors, (1907), 0 states have call successors, (0), 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 20:42:32,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:32,667 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:32,667 INFO L175 Difference]: Start difference. First operand has 256 places, 231 transitions, 1615 flow. Second operand 19 states and 1907 transitions. [2022-09-20 20:42:32,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 383 transitions, 3414 flow [2022-09-20 20:42:32,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 383 transitions, 3322 flow, removed 28 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:32,746 INFO L231 Difference]: Finished difference. Result has 278 places, 270 transitions, 2334 flow [2022-09-20 20:42:32,747 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2334, PETRI_PLACES=278, PETRI_TRANSITIONS=270} [2022-09-20 20:42:32,747 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 98 predicate places. [2022-09-20 20:42:32,747 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 270 transitions, 2334 flow [2022-09-20 20:42:32,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:42:32,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:32,748 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] [2022-09-20 20:42:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:42:32,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1373579444, now seen corresponding path program 7 times [2022-09-20 20:42:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:32,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866647089] [2022-09-20 20:42:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:33,155 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 20:42:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866647089] [2022-09-20 20:42:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866647089] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:33,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:33,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790549807] [2022-09-20 20:42:33,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:33,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:33,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:33,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 270 transitions, 2334 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:33,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:33,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:33,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:34,739 INFO L130 PetriNetUnfolder]: 2209/6724 cut-off events. [2022-09-20 20:42:34,739 INFO L131 PetriNetUnfolder]: For 27627/27846 co-relation queries the response was YES. [2022-09-20 20:42:34,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 6724 events. 2209/6724 cut-off events. For 27627/27846 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 66043 event pairs, 625 based on Foata normal form. 135/6737 useless extension candidates. Maximal degree in co-relation 20203. Up to 2089 conditions per place. [2022-09-20 20:42:34,794 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 224 selfloop transitions, 90 changer transitions 0/390 dead transitions. [2022-09-20 20:42:34,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 390 transitions, 4301 flow [2022-09-20 20:42:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:42:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:42:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1745 transitions. [2022-09-20 20:42:34,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5291085506367496 [2022-09-20 20:42:34,798 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1745 transitions. [2022-09-20 20:42:34,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1745 transitions. [2022-09-20 20:42:34,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:34,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1745 transitions. [2022-09-20 20:42:34,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 102.6470588235294) internal successors, (1745), 17 states have internal predecessors, (1745), 0 states have call successors, (0), 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 20:42:34,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 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 20:42:34,806 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 194.0) internal successors, (3492), 18 states have internal predecessors, (3492), 0 states have call successors, (0), 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 20:42:34,806 INFO L175 Difference]: Start difference. First operand has 278 places, 270 transitions, 2334 flow. Second operand 17 states and 1745 transitions. [2022-09-20 20:42:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 390 transitions, 4301 flow [2022-09-20 20:42:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 390 transitions, 4218 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:34,900 INFO L231 Difference]: Finished difference. Result has 296 places, 306 transitions, 3122 flow [2022-09-20 20:42:34,901 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3122, PETRI_PLACES=296, PETRI_TRANSITIONS=306} [2022-09-20 20:42:34,901 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 116 predicate places. [2022-09-20 20:42:34,901 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 306 transitions, 3122 flow [2022-09-20 20:42:34,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:34,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:34,902 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] [2022-09-20 20:42:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:42:34,903 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:34,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:34,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1194817176, now seen corresponding path program 8 times [2022-09-20 20:42:34,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:34,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906258897] [2022-09-20 20:42:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:34,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:35,290 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 20:42:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:35,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906258897] [2022-09-20 20:42:35,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906258897] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:35,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:35,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:42:35,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430422200] [2022-09-20 20:42:35,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:35,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:42:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:42:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:42:35,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:42:35,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 306 transitions, 3122 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:42:35,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:35,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:42:35,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:36,413 INFO L130 PetriNetUnfolder]: 1266/4945 cut-off events. [2022-09-20 20:42:36,413 INFO L131 PetriNetUnfolder]: For 22762/22922 co-relation queries the response was YES. [2022-09-20 20:42:36,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 4945 events. 1266/4945 cut-off events. For 22762/22922 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 51128 event pairs, 279 based on Foata normal form. 71/4862 useless extension candidates. Maximal degree in co-relation 15723. Up to 1427 conditions per place. [2022-09-20 20:42:36,516 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 133 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2022-09-20 20:42:36,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 386 transitions, 4195 flow [2022-09-20 20:42:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:42:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:42:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1643 transitions. [2022-09-20 20:42:36,520 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7699156513589503 [2022-09-20 20:42:36,520 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1643 transitions. [2022-09-20 20:42:36,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1643 transitions. [2022-09-20 20:42:36,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:36,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1643 transitions. [2022-09-20 20:42:36,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.36363636363637) internal successors, (1643), 11 states have internal predecessors, (1643), 0 states have call successors, (0), 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 20:42:36,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:42:36,526 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:42:36,526 INFO L175 Difference]: Start difference. First operand has 296 places, 306 transitions, 3122 flow. Second operand 11 states and 1643 transitions. [2022-09-20 20:42:36,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 386 transitions, 4195 flow [2022-09-20 20:42:36,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 386 transitions, 4126 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:36,634 INFO L231 Difference]: Finished difference. Result has 303 places, 315 transitions, 3194 flow [2022-09-20 20:42:36,634 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3194, PETRI_PLACES=303, PETRI_TRANSITIONS=315} [2022-09-20 20:42:36,636 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 123 predicate places. [2022-09-20 20:42:36,636 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 315 transitions, 3194 flow [2022-09-20 20:42:36,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:42:36,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:36,636 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] [2022-09-20 20:42:36,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 20:42:36,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:36,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1134520708, now seen corresponding path program 9 times [2022-09-20 20:42:36,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:36,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256330908] [2022-09-20 20:42:36,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:37,178 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 20:42:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:37,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256330908] [2022-09-20 20:42:37,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256330908] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:37,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:37,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-09-20 20:42:37,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091725599] [2022-09-20 20:42:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:37,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 20:42:37,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:37,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 20:42:37,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-20 20:42:37,182 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 194 [2022-09-20 20:42:37,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 315 transitions, 3194 flow. Second operand has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 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 20:42:37,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:37,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 194 [2022-09-20 20:42:37,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:39,806 INFO L130 PetriNetUnfolder]: 2577/8441 cut-off events. [2022-09-20 20:42:39,806 INFO L131 PetriNetUnfolder]: For 42570/42855 co-relation queries the response was YES. [2022-09-20 20:42:39,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28966 conditions, 8441 events. 2577/8441 cut-off events. For 42570/42855 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 89729 event pairs, 935 based on Foata normal form. 177/8485 useless extension candidates. Maximal degree in co-relation 28892. Up to 2329 conditions per place. [2022-09-20 20:42:39,868 INFO L137 encePairwiseOnDemand]: 165/194 looper letters, 306 selfloop transitions, 126 changer transitions 0/511 dead transitions. [2022-09-20 20:42:39,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 511 transitions, 6414 flow [2022-09-20 20:42:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-20 20:42:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-20 20:42:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2022-09-20 20:42:39,876 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5127025036818851 [2022-09-20 20:42:39,876 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2785 transitions. [2022-09-20 20:42:39,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2785 transitions. [2022-09-20 20:42:39,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:39,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2785 transitions. [2022-09-20 20:42:39,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 99.46428571428571) internal successors, (2785), 28 states have internal predecessors, (2785), 0 states have call successors, (0), 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 20:42:39,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 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 20:42:39,888 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 194.0) internal successors, (5626), 29 states have internal predecessors, (5626), 0 states have call successors, (0), 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 20:42:39,888 INFO L175 Difference]: Start difference. First operand has 303 places, 315 transitions, 3194 flow. Second operand 28 states and 2785 transitions. [2022-09-20 20:42:39,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 511 transitions, 6414 flow [2022-09-20 20:42:40,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 511 transitions, 6399 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:40,066 INFO L231 Difference]: Finished difference. Result has 333 places, 368 transitions, 4576 flow [2022-09-20 20:42:40,067 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4576, PETRI_PLACES=333, PETRI_TRANSITIONS=368} [2022-09-20 20:42:40,067 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 153 predicate places. [2022-09-20 20:42:40,067 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 368 transitions, 4576 flow [2022-09-20 20:42:40,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.1) internal successors, (1942), 20 states have internal predecessors, (1942), 0 states have call successors, (0), 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 20:42:40,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:40,068 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] [2022-09-20 20:42:40,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 20:42:40,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1893799430, now seen corresponding path program 10 times [2022-09-20 20:42:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:40,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375741495] [2022-09-20 20:42:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:40,566 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 20:42:40,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:40,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375741495] [2022-09-20 20:42:40,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375741495] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:40,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:40,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:42:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89286820] [2022-09-20 20:42:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:42:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:42:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:42:40,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:42:40,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 368 transitions, 4576 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:42:40,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:40,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:42:40,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:44,470 INFO L130 PetriNetUnfolder]: 5421/14561 cut-off events. [2022-09-20 20:42:44,471 INFO L131 PetriNetUnfolder]: For 80791/80844 co-relation queries the response was YES. [2022-09-20 20:42:44,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51943 conditions, 14561 events. 5421/14561 cut-off events. For 80791/80844 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 156217 event pairs, 1871 based on Foata normal form. 16/14435 useless extension candidates. Maximal degree in co-relation 51860. Up to 6692 conditions per place. [2022-09-20 20:42:44,618 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 322 selfloop transitions, 159 changer transitions 0/548 dead transitions. [2022-09-20 20:42:44,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 548 transitions, 7494 flow [2022-09-20 20:42:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1898 transitions. [2022-09-20 20:42:44,623 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5149213239283776 [2022-09-20 20:42:44,623 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1898 transitions. [2022-09-20 20:42:44,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1898 transitions. [2022-09-20 20:42:44,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:44,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1898 transitions. [2022-09-20 20:42:44,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 99.89473684210526) internal successors, (1898), 19 states have internal predecessors, (1898), 0 states have call successors, (0), 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 20:42:44,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:44,631 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:44,631 INFO L175 Difference]: Start difference. First operand has 333 places, 368 transitions, 4576 flow. Second operand 19 states and 1898 transitions. [2022-09-20 20:42:44,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 548 transitions, 7494 flow [2022-09-20 20:42:44,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 548 transitions, 7367 flow, removed 48 selfloop flow, removed 12 redundant places. [2022-09-20 20:42:44,992 INFO L231 Difference]: Finished difference. Result has 349 places, 428 transitions, 6072 flow [2022-09-20 20:42:44,992 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6072, PETRI_PLACES=349, PETRI_TRANSITIONS=428} [2022-09-20 20:42:44,993 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 169 predicate places. [2022-09-20 20:42:44,993 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 428 transitions, 6072 flow [2022-09-20 20:42:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:42:44,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:44,993 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] [2022-09-20 20:42:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 20:42:44,994 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:44,994 INFO L85 PathProgramCache]: Analyzing trace with hash 174929262, now seen corresponding path program 11 times [2022-09-20 20:42:44,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:44,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051848469] [2022-09-20 20:42:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:45,776 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 20:42:45,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:45,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051848469] [2022-09-20 20:42:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051848469] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:45,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335474045] [2022-09-20 20:42:45,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:45,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:45,780 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:42:45,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 428 transitions, 6072 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:42:45,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:45,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:42:45,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:51,353 INFO L130 PetriNetUnfolder]: 6097/16369 cut-off events. [2022-09-20 20:42:51,354 INFO L131 PetriNetUnfolder]: For 102637/102707 co-relation queries the response was YES. [2022-09-20 20:42:51,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60469 conditions, 16369 events. 6097/16369 cut-off events. For 102637/102707 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 180338 event pairs, 1138 based on Foata normal form. 22/16208 useless extension candidates. Maximal degree in co-relation 60376. Up to 3237 conditions per place. [2022-09-20 20:42:51,511 INFO L137 encePairwiseOnDemand]: 167/194 looper letters, 428 selfloop transitions, 250 changer transitions 0/745 dead transitions. [2022-09-20 20:42:51,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 745 transitions, 11034 flow [2022-09-20 20:42:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 20:42:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 20:42:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3167 transitions. [2022-09-20 20:42:51,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5101481958762887 [2022-09-20 20:42:51,515 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3167 transitions. [2022-09-20 20:42:51,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3167 transitions. [2022-09-20 20:42:51,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:51,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3167 transitions. [2022-09-20 20:42:51,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 98.96875) internal successors, (3167), 32 states have internal predecessors, (3167), 0 states have call successors, (0), 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 20:42:51,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 194.0) internal successors, (6402), 33 states have internal predecessors, (6402), 0 states have call successors, (0), 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 20:42:51,527 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 194.0) internal successors, (6402), 33 states have internal predecessors, (6402), 0 states have call successors, (0), 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 20:42:51,528 INFO L175 Difference]: Start difference. First operand has 349 places, 428 transitions, 6072 flow. Second operand 32 states and 3167 transitions. [2022-09-20 20:42:51,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 745 transitions, 11034 flow [2022-09-20 20:42:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 745 transitions, 10866 flow, removed 49 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:51,932 INFO L231 Difference]: Finished difference. Result has 383 places, 531 transitions, 8655 flow [2022-09-20 20:42:51,932 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=5940, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=8655, PETRI_PLACES=383, PETRI_TRANSITIONS=531} [2022-09-20 20:42:51,933 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 203 predicate places. [2022-09-20 20:42:51,933 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 531 transitions, 8655 flow [2022-09-20 20:42:51,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:42:51,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:51,934 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] [2022-09-20 20:42:51,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 20:42:51,934 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2137492544, now seen corresponding path program 12 times [2022-09-20 20:42:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069792810] [2022-09-20 20:42:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:51,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:52,363 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 20:42:52,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:52,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069792810] [2022-09-20 20:42:52,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069792810] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:52,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:52,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894399120] [2022-09-20 20:42:52,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:52,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 194 [2022-09-20 20:42:52,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 531 transitions, 8655 flow. Second operand has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:52,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:52,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 194 [2022-09-20 20:42:52,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:56,068 INFO L130 PetriNetUnfolder]: 3848/12981 cut-off events. [2022-09-20 20:42:56,068 INFO L131 PetriNetUnfolder]: For 102049/102329 co-relation queries the response was YES. [2022-09-20 20:42:56,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49773 conditions, 12981 events. 3848/12981 cut-off events. For 102049/102329 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 151113 event pairs, 799 based on Foata normal form. 152/12928 useless extension candidates. Maximal degree in co-relation 49671. Up to 2187 conditions per place. [2022-09-20 20:42:56,196 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 389 selfloop transitions, 268 changer transitions 0/747 dead transitions. [2022-09-20 20:42:56,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 747 transitions, 13168 flow [2022-09-20 20:42:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1964 transitions. [2022-09-20 20:42:56,199 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5328269126424309 [2022-09-20 20:42:56,199 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1964 transitions. [2022-09-20 20:42:56,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1964 transitions. [2022-09-20 20:42:56,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:56,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1964 transitions. [2022-09-20 20:42:56,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.36842105263158) internal successors, (1964), 19 states have internal predecessors, (1964), 0 states have call successors, (0), 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 20:42:56,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:56,206 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:42:56,207 INFO L175 Difference]: Start difference. First operand has 383 places, 531 transitions, 8655 flow. Second operand 19 states and 1964 transitions. [2022-09-20 20:42:56,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 747 transitions, 13168 flow [2022-09-20 20:42:56,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 747 transitions, 13001 flow, removed 55 selfloop flow, removed 10 redundant places. [2022-09-20 20:42:56,605 INFO L231 Difference]: Finished difference. Result has 399 places, 601 transitions, 11114 flow [2022-09-20 20:42:56,606 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=8500, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11114, PETRI_PLACES=399, PETRI_TRANSITIONS=601} [2022-09-20 20:42:56,606 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 219 predicate places. [2022-09-20 20:42:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 601 transitions, 11114 flow [2022-09-20 20:42:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.06666666666666) internal successors, (1486), 15 states have internal predecessors, (1486), 0 states have call successors, (0), 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 20:42:56,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:56,607 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] [2022-09-20 20:42:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 20:42:56,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1525973586, now seen corresponding path program 13 times [2022-09-20 20:42:56,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:56,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760733193] [2022-09-20 20:42:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:57,243 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 20:42:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:57,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760733193] [2022-09-20 20:42:57,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760733193] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:57,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:57,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686066352] [2022-09-20 20:42:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:57,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:57,246 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:42:57,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 601 transitions, 11114 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:42:57,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:57,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:42:57,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:02,558 INFO L130 PetriNetUnfolder]: 6113/17087 cut-off events. [2022-09-20 20:43:02,558 INFO L131 PetriNetUnfolder]: For 149471/149567 co-relation queries the response was YES. [2022-09-20 20:43:02,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68755 conditions, 17087 events. 6113/17087 cut-off events. For 149471/149567 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 191655 event pairs, 1805 based on Foata normal form. 43/16991 useless extension candidates. Maximal degree in co-relation 68644. Up to 6537 conditions per place. [2022-09-20 20:43:02,725 INFO L137 encePairwiseOnDemand]: 168/194 looper letters, 412 selfloop transitions, 290 changer transitions 0/769 dead transitions. [2022-09-20 20:43:02,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 769 transitions, 14442 flow [2022-09-20 20:43:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:43:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:43:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2009 transitions. [2022-09-20 20:43:02,728 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5177835051546392 [2022-09-20 20:43:02,728 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2009 transitions. [2022-09-20 20:43:02,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2009 transitions. [2022-09-20 20:43:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2009 transitions. [2022-09-20 20:43:02,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 100.45) internal successors, (2009), 20 states have internal predecessors, (2009), 0 states have call successors, (0), 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 20:43:02,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 194.0) internal successors, (4074), 21 states have internal predecessors, (4074), 0 states have call successors, (0), 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 20:43:02,735 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 194.0) internal successors, (4074), 21 states have internal predecessors, (4074), 0 states have call successors, (0), 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 20:43:02,735 INFO L175 Difference]: Start difference. First operand has 399 places, 601 transitions, 11114 flow. Second operand 20 states and 2009 transitions. [2022-09-20 20:43:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 769 transitions, 14442 flow [2022-09-20 20:43:03,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 769 transitions, 14094 flow, removed 94 selfloop flow, removed 7 redundant places. [2022-09-20 20:43:03,533 INFO L231 Difference]: Finished difference. Result has 419 places, 636 transitions, 12628 flow [2022-09-20 20:43:03,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=10863, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12628, PETRI_PLACES=419, PETRI_TRANSITIONS=636} [2022-09-20 20:43:03,534 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 239 predicate places. [2022-09-20 20:43:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 636 transitions, 12628 flow [2022-09-20 20:43:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:43:03,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:03,535 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] [2022-09-20 20:43:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 20:43:03,535 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1351305850, now seen corresponding path program 14 times [2022-09-20 20:43:03,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:03,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236008200] [2022-09-20 20:43:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:04,041 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 20:43:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:04,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236008200] [2022-09-20 20:43:04,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236008200] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:04,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:04,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:43:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964643266] [2022-09-20 20:43:04,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:04,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:43:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:43:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:43:04,044 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:43:04,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 636 transitions, 12628 flow. Second operand has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:43:04,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:04,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:43:04,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:11,372 INFO L130 PetriNetUnfolder]: 8620/23878 cut-off events. [2022-09-20 20:43:11,372 INFO L131 PetriNetUnfolder]: For 214191/214233 co-relation queries the response was YES. [2022-09-20 20:43:11,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95389 conditions, 23878 events. 8620/23878 cut-off events. For 214191/214233 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 283890 event pairs, 4283 based on Foata normal form. 15/23674 useless extension candidates. Maximal degree in co-relation 95271. Up to 8319 conditions per place. [2022-09-20 20:43:11,776 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 583 selfloop transitions, 259 changer transitions 0/909 dead transitions. [2022-09-20 20:43:11,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 909 transitions, 18274 flow [2022-09-20 20:43:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:43:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:43:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1916 transitions. [2022-09-20 20:43:11,782 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5198046663049376 [2022-09-20 20:43:11,782 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1916 transitions. [2022-09-20 20:43:11,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1916 transitions. [2022-09-20 20:43:11,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:11,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1916 transitions. [2022-09-20 20:43:11,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.84210526315789) internal successors, (1916), 19 states have internal predecessors, (1916), 0 states have call successors, (0), 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 20:43:11,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:43:11,788 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:43:11,788 INFO L175 Difference]: Start difference. First operand has 419 places, 636 transitions, 12628 flow. Second operand 19 states and 1916 transitions. [2022-09-20 20:43:11,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 909 transitions, 18274 flow [2022-09-20 20:43:13,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 909 transitions, 18056 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-09-20 20:43:13,085 INFO L231 Difference]: Finished difference. Result has 440 places, 710 transitions, 15051 flow [2022-09-20 20:43:13,085 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=12446, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15051, PETRI_PLACES=440, PETRI_TRANSITIONS=710} [2022-09-20 20:43:13,086 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 260 predicate places. [2022-09-20 20:43:13,086 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 710 transitions, 15051 flow [2022-09-20 20:43:13,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 94.42105263157895) internal successors, (1794), 19 states have internal predecessors, (1794), 0 states have call successors, (0), 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 20:43:13,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:13,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 20:43:13,087 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1501195124, now seen corresponding path program 15 times [2022-09-20 20:43:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:13,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286458043] [2022-09-20 20:43:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:13,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:13,557 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 20:43:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:13,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286458043] [2022-09-20 20:43:13,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286458043] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:13,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:13,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 20:43:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640631424] [2022-09-20 20:43:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 20:43:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 20:43:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-09-20 20:43:13,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:43:13,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 710 transitions, 15051 flow. Second operand has 17 states, 17 states have (on average 94.82352941176471) internal successors, (1612), 17 states have internal predecessors, (1612), 0 states have call successors, (0), 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 20:43:13,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:13,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:43:13,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:21,873 INFO L130 PetriNetUnfolder]: 8621/23480 cut-off events. [2022-09-20 20:43:21,873 INFO L131 PetriNetUnfolder]: For 230562/230634 co-relation queries the response was YES. [2022-09-20 20:43:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97470 conditions, 23480 events. 8621/23480 cut-off events. For 230562/230634 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 276391 event pairs, 1505 based on Foata normal form. 27/23278 useless extension candidates. Maximal degree in co-relation 97341. Up to 5589 conditions per place. [2022-09-20 20:43:22,236 INFO L137 encePairwiseOnDemand]: 167/194 looper letters, 532 selfloop transitions, 390 changer transitions 0/989 dead transitions. [2022-09-20 20:43:22,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 989 transitions, 19876 flow [2022-09-20 20:43:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-20 20:43:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-20 20:43:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2917 transitions. [2022-09-20 20:43:22,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.518485602559545 [2022-09-20 20:43:22,240 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2917 transitions. [2022-09-20 20:43:22,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2917 transitions. [2022-09-20 20:43:22,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:22,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2917 transitions. [2022-09-20 20:43:22,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 100.58620689655173) internal successors, (2917), 29 states have internal predecessors, (2917), 0 states have call successors, (0), 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 20:43:22,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 0 states have call successors, (0), 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 20:43:22,247 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 194.0) internal successors, (5820), 30 states have internal predecessors, (5820), 0 states have call successors, (0), 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 20:43:22,247 INFO L175 Difference]: Start difference. First operand has 440 places, 710 transitions, 15051 flow. Second operand 29 states and 2917 transitions. [2022-09-20 20:43:22,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 989 transitions, 19876 flow [2022-09-20 20:43:23,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 989 transitions, 19607 flow, removed 121 selfloop flow, removed 5 redundant places. [2022-09-20 20:43:23,865 INFO L231 Difference]: Finished difference. Result has 472 places, 756 transitions, 17117 flow [2022-09-20 20:43:23,866 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=14798, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17117, PETRI_PLACES=472, PETRI_TRANSITIONS=756} [2022-09-20 20:43:23,866 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 292 predicate places. [2022-09-20 20:43:23,867 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 756 transitions, 17117 flow [2022-09-20 20:43:23,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 94.82352941176471) internal successors, (1612), 17 states have internal predecessors, (1612), 0 states have call successors, (0), 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 20:43:23,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:23,867 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] [2022-09-20 20:43:23,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 20:43:23,867 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 573465892, now seen corresponding path program 16 times [2022-09-20 20:43:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553188110] [2022-09-20 20:43:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:24,152 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 20:43:24,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553188110] [2022-09-20 20:43:24,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553188110] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:24,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:24,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:43:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316535338] [2022-09-20 20:43:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:43:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:43:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:43:24,154 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:43:24,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 756 transitions, 17117 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:24,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:24,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:43:24,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:28,238 INFO L130 PetriNetUnfolder]: 3019/13603 cut-off events. [2022-09-20 20:43:28,239 INFO L131 PetriNetUnfolder]: For 182639/183019 co-relation queries the response was YES. [2022-09-20 20:43:28,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60372 conditions, 13603 events. 3019/13603 cut-off events. For 182639/183019 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 177572 event pairs, 1145 based on Foata normal form. 79/13436 useless extension candidates. Maximal degree in co-relation 60234. Up to 3394 conditions per place. [2022-09-20 20:43:28,398 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 266 selfloop transitions, 50 changer transitions 0/902 dead transitions. [2022-09-20 20:43:28,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 902 transitions, 19836 flow [2022-09-20 20:43:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:43:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:43:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1650 transitions. [2022-09-20 20:43:28,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7731958762886598 [2022-09-20 20:43:28,401 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1650 transitions. [2022-09-20 20:43:28,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1650 transitions. [2022-09-20 20:43:28,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:28,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1650 transitions. [2022-09-20 20:43:28,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0) internal successors, (1650), 11 states have internal predecessors, (1650), 0 states have call successors, (0), 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 20:43:28,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:28,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:28,405 INFO L175 Difference]: Start difference. First operand has 472 places, 756 transitions, 17117 flow. Second operand 11 states and 1650 transitions. [2022-09-20 20:43:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 902 transitions, 19836 flow [2022-09-20 20:43:29,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 902 transitions, 19573 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-09-20 20:43:29,664 INFO L231 Difference]: Finished difference. Result has 475 places, 769 transitions, 17257 flow [2022-09-20 20:43:29,664 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=16897, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17257, PETRI_PLACES=475, PETRI_TRANSITIONS=769} [2022-09-20 20:43:29,664 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 295 predicate places. [2022-09-20 20:43:29,665 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 769 transitions, 17257 flow [2022-09-20 20:43:29,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:29,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:29,665 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] [2022-09-20 20:43:29,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 20:43:29,665 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1659477190, now seen corresponding path program 17 times [2022-09-20 20:43:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017262977] [2022-09-20 20:43:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:30,044 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 20:43:30,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:30,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017262977] [2022-09-20 20:43:30,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017262977] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:30,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:30,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:43:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037867621] [2022-09-20 20:43:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:30,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:43:30,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:43:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:43:30,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:43:30,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 769 transitions, 17257 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:30,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:30,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:43:30,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:33,963 INFO L130 PetriNetUnfolder]: 2761/12693 cut-off events. [2022-09-20 20:43:33,963 INFO L131 PetriNetUnfolder]: For 179302/179696 co-relation queries the response was YES. [2022-09-20 20:43:34,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59274 conditions, 12693 events. 2761/12693 cut-off events. For 179302/179696 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 163805 event pairs, 1087 based on Foata normal form. 84/12491 useless extension candidates. Maximal degree in co-relation 59130. Up to 4672 conditions per place. [2022-09-20 20:43:34,103 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 241 selfloop transitions, 44 changer transitions 0/840 dead transitions. [2022-09-20 20:43:34,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 840 transitions, 18292 flow [2022-09-20 20:43:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:43:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:43:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1650 transitions. [2022-09-20 20:43:34,105 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7731958762886598 [2022-09-20 20:43:34,105 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1650 transitions. [2022-09-20 20:43:34,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1650 transitions. [2022-09-20 20:43:34,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:34,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1650 transitions. [2022-09-20 20:43:34,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0) internal successors, (1650), 11 states have internal predecessors, (1650), 0 states have call successors, (0), 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 20:43:34,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:34,108 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:34,108 INFO L175 Difference]: Start difference. First operand has 475 places, 769 transitions, 17257 flow. Second operand 11 states and 1650 transitions. [2022-09-20 20:43:34,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 840 transitions, 18292 flow [2022-09-20 20:43:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 840 transitions, 18240 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-09-20 20:43:35,513 INFO L231 Difference]: Finished difference. Result has 483 places, 747 transitions, 16647 flow [2022-09-20 20:43:35,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=16263, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16647, PETRI_PLACES=483, PETRI_TRANSITIONS=747} [2022-09-20 20:43:35,514 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 303 predicate places. [2022-09-20 20:43:35,514 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 747 transitions, 16647 flow [2022-09-20 20:43:35,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:35,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:35,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 20:43:35,515 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1357193988, now seen corresponding path program 18 times [2022-09-20 20:43:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:35,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154690943] [2022-09-20 20:43:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:36,341 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 20:43:36,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154690943] [2022-09-20 20:43:36,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154690943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:36,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:36,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-09-20 20:43:36,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131616165] [2022-09-20 20:43:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:36,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 20:43:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 20:43:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-09-20 20:43:36,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:43:36,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 747 transitions, 16647 flow. Second operand has 20 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 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 20:43:36,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:36,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:43:36,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:45,928 INFO L130 PetriNetUnfolder]: 9516/27129 cut-off events. [2022-09-20 20:43:45,929 INFO L131 PetriNetUnfolder]: For 331566/331632 co-relation queries the response was YES. [2022-09-20 20:43:46,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124231 conditions, 27129 events. 9516/27129 cut-off events. For 331566/331632 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 333582 event pairs, 4423 based on Foata normal form. 31/26895 useless extension candidates. Maximal degree in co-relation 124084. Up to 8593 conditions per place. [2022-09-20 20:43:46,405 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 606 selfloop transitions, 309 changer transitions 0/982 dead transitions. [2022-09-20 20:43:46,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 982 transitions, 22251 flow [2022-09-20 20:43:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:43:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:43:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1907 transitions. [2022-09-20 20:43:46,408 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5173629951166576 [2022-09-20 20:43:46,409 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1907 transitions. [2022-09-20 20:43:46,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1907 transitions. [2022-09-20 20:43:46,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:46,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1907 transitions. [2022-09-20 20:43:46,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.36842105263158) internal successors, (1907), 19 states have internal predecessors, (1907), 0 states have call successors, (0), 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 20:43:46,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:43:46,414 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 194.0) internal successors, (3880), 20 states have internal predecessors, (3880), 0 states have call successors, (0), 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 20:43:46,414 INFO L175 Difference]: Start difference. First operand has 483 places, 747 transitions, 16647 flow. Second operand 19 states and 1907 transitions. [2022-09-20 20:43:46,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 982 transitions, 22251 flow [2022-09-20 20:43:48,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 982 transitions, 22197 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-09-20 20:43:48,821 INFO L231 Difference]: Finished difference. Result has 504 places, 808 transitions, 19264 flow [2022-09-20 20:43:48,821 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=16599, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19264, PETRI_PLACES=504, PETRI_TRANSITIONS=808} [2022-09-20 20:43:48,821 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 324 predicate places. [2022-09-20 20:43:48,821 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 808 transitions, 19264 flow [2022-09-20 20:43:48,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 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 20:43:48,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:48,822 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] [2022-09-20 20:43:48,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 20:43:48,822 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1921907558, now seen corresponding path program 19 times [2022-09-20 20:43:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251212796] [2022-09-20 20:43:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:49,111 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 20:43:49,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:49,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251212796] [2022-09-20 20:43:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251212796] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:49,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:43:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954596146] [2022-09-20 20:43:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:49,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:43:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:43:49,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:43:49,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:43:49,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 808 transitions, 19264 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:49,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:49,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:43:49,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:53,415 INFO L130 PetriNetUnfolder]: 2786/13198 cut-off events. [2022-09-20 20:43:53,416 INFO L131 PetriNetUnfolder]: For 207125/207503 co-relation queries the response was YES. [2022-09-20 20:43:53,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62944 conditions, 13198 events. 2786/13198 cut-off events. For 207125/207503 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 172959 event pairs, 1547 based on Foata normal form. 95/12992 useless extension candidates. Maximal degree in co-relation 62789. Up to 5574 conditions per place. [2022-09-20 20:43:53,584 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 209 selfloop transitions, 63 changer transitions 0/846 dead transitions. [2022-09-20 20:43:53,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 846 transitions, 19586 flow [2022-09-20 20:43:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:43:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:43:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1648 transitions. [2022-09-20 20:43:53,586 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7722586691658857 [2022-09-20 20:43:53,586 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1648 transitions. [2022-09-20 20:43:53,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1648 transitions. [2022-09-20 20:43:53,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:53,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1648 transitions. [2022-09-20 20:43:53,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.8181818181818) internal successors, (1648), 11 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:53,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:53,589 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:43:53,590 INFO L175 Difference]: Start difference. First operand has 504 places, 808 transitions, 19264 flow. Second operand 11 states and 1648 transitions. [2022-09-20 20:43:53,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 846 transitions, 19586 flow [2022-09-20 20:43:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 846 transitions, 19185 flow, removed 161 selfloop flow, removed 7 redundant places. [2022-09-20 20:43:55,184 INFO L231 Difference]: Finished difference. Result has 509 places, 776 transitions, 18028 flow [2022-09-20 20:43:55,185 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=17822, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18028, PETRI_PLACES=509, PETRI_TRANSITIONS=776} [2022-09-20 20:43:55,185 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 329 predicate places. [2022-09-20 20:43:55,186 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 776 transitions, 18028 flow [2022-09-20 20:43:55,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:55,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:55,186 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] [2022-09-20 20:43:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 20:43:55,187 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:55,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -879994208, now seen corresponding path program 20 times [2022-09-20 20:43:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690926868] [2022-09-20 20:43:55,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:55,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:55,489 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 20:43:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:55,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690926868] [2022-09-20 20:43:55,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690926868] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:55,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:55,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:43:55,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152596860] [2022-09-20 20:43:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:55,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:43:55,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:55,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:43:55,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:43:55,492 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:43:55,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 776 transitions, 18028 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:43:55,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:55,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:43:55,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:59,746 INFO L130 PetriNetUnfolder]: 2769/13033 cut-off events. [2022-09-20 20:43:59,747 INFO L131 PetriNetUnfolder]: For 204479/204864 co-relation queries the response was YES. [2022-09-20 20:43:59,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62588 conditions, 13033 events. 2769/13033 cut-off events. For 204479/204864 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 170717 event pairs, 1145 based on Foata normal form. 101/12893 useless extension candidates. Maximal degree in co-relation 62430. Up to 3395 conditions per place. [2022-09-20 20:43:59,917 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 287 selfloop transitions, 39 changer transitions 0/900 dead transitions. [2022-09-20 20:43:59,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 900 transitions, 20359 flow [2022-09-20 20:43:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:43:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:43:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1657 transitions. [2022-09-20 20:43:59,919 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7764761012183693 [2022-09-20 20:43:59,919 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1657 transitions. [2022-09-20 20:43:59,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1657 transitions. [2022-09-20 20:43:59,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:59,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1657 transitions. [2022-09-20 20:44:00,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.63636363636363) internal successors, (1657), 11 states have internal predecessors, (1657), 0 states have call successors, (0), 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 20:44:00,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:44:00,025 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:44:00,025 INFO L175 Difference]: Start difference. First operand has 509 places, 776 transitions, 18028 flow. Second operand 11 states and 1657 transitions. [2022-09-20 20:44:00,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 900 transitions, 20359 flow [2022-09-20 20:44:01,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 900 transitions, 20247 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-09-20 20:44:01,532 INFO L231 Difference]: Finished difference. Result has 515 places, 785 transitions, 18228 flow [2022-09-20 20:44:01,533 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=17930, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18228, PETRI_PLACES=515, PETRI_TRANSITIONS=785} [2022-09-20 20:44:01,534 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 335 predicate places. [2022-09-20 20:44:01,534 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 785 transitions, 18228 flow [2022-09-20 20:44:01,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:44:01,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:01,535 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] [2022-09-20 20:44:01,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 20:44:01,535 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 927207190, now seen corresponding path program 21 times [2022-09-20 20:44:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:01,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565216285] [2022-09-20 20:44:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:02,044 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 20:44:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565216285] [2022-09-20 20:44:02,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565216285] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:02,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:02,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:44:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700930534] [2022-09-20 20:44:02,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:44:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:44:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:44:02,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 194 [2022-09-20 20:44:02,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 785 transitions, 18228 flow. Second operand has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:44:02,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:02,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 194 [2022-09-20 20:44:02,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:11,897 INFO L130 PetriNetUnfolder]: 8465/24515 cut-off events. [2022-09-20 20:44:11,897 INFO L131 PetriNetUnfolder]: For 336961/337079 co-relation queries the response was YES. [2022-09-20 20:44:12,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116485 conditions, 24515 events. 8465/24515 cut-off events. For 336961/337079 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 297273 event pairs, 4013 based on Foata normal form. 65/24331 useless extension candidates. Maximal degree in co-relation 116323. Up to 8593 conditions per place. [2022-09-20 20:44:12,245 INFO L137 encePairwiseOnDemand]: 169/194 looper letters, 600 selfloop transitions, 323 changer transitions 0/990 dead transitions. [2022-09-20 20:44:12,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 990 transitions, 23161 flow [2022-09-20 20:44:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:44:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:44:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2006 transitions. [2022-09-20 20:44:12,247 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5170103092783506 [2022-09-20 20:44:12,247 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2006 transitions. [2022-09-20 20:44:12,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2006 transitions. [2022-09-20 20:44:12,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:12,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2006 transitions. [2022-09-20 20:44:12,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 100.3) internal successors, (2006), 20 states have internal predecessors, (2006), 0 states have call successors, (0), 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 20:44:12,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 194.0) internal successors, (4074), 21 states have internal predecessors, (4074), 0 states have call successors, (0), 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 20:44:12,251 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 194.0) internal successors, (4074), 21 states have internal predecessors, (4074), 0 states have call successors, (0), 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 20:44:12,251 INFO L175 Difference]: Start difference. First operand has 515 places, 785 transitions, 18228 flow. Second operand 20 states and 2006 transitions. [2022-09-20 20:44:12,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 990 transitions, 23161 flow [2022-09-20 20:44:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 990 transitions, 23109 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-09-20 20:44:14,611 INFO L231 Difference]: Finished difference. Result has 537 places, 816 transitions, 20126 flow [2022-09-20 20:44:14,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=18188, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20126, PETRI_PLACES=537, PETRI_TRANSITIONS=816} [2022-09-20 20:44:14,612 INFO L287 CegarLoopForPetriNet]: 180 programPoint places, 357 predicate places. [2022-09-20 20:44:14,612 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 816 transitions, 20126 flow [2022-09-20 20:44:14,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 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 20:44:14,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:14,613 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] [2022-09-20 20:44:14,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 20:44:14,613 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1202794394, now seen corresponding path program 22 times [2022-09-20 20:44:14,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:14,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769758845] [2022-09-20 20:44:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:14,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:14,894 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 20:44:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:14,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769758845] [2022-09-20 20:44:14,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769758845] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:14,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:14,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:44:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670517060] [2022-09-20 20:44:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:14,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:44:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:44:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:44:14,896 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 194 [2022-09-20 20:44:14,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 816 transitions, 20126 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:44:14,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:14,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 194 [2022-09-20 20:44:14,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:18,882 INFO L130 PetriNetUnfolder]: 2416/11831 cut-off events. [2022-09-20 20:44:18,882 INFO L131 PetriNetUnfolder]: For 215540/215938 co-relation queries the response was YES. [2022-09-20 20:44:19,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59556 conditions, 11831 events. 2416/11831 cut-off events. For 215540/215938 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 152320 event pairs, 1384 based on Foata normal form. 78/11624 useless extension candidates. Maximal degree in co-relation 59387. Up to 3394 conditions per place. [2022-09-20 20:44:19,046 INFO L137 encePairwiseOnDemand]: 182/194 looper letters, 300 selfloop transitions, 41 changer transitions 0/943 dead transitions. [2022-09-20 20:44:19,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 943 transitions, 22388 flow [2022-09-20 20:44:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:44:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:44:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1663 transitions. [2022-09-20 20:44:19,047 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7792877225866917 [2022-09-20 20:44:19,047 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1663 transitions. [2022-09-20 20:44:19,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1663 transitions. [2022-09-20 20:44:19,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:19,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1663 transitions. [2022-09-20 20:44:19,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.1818181818182) internal successors, (1663), 11 states have internal predecessors, (1663), 0 states have call successors, (0), 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 20:44:19,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:44:19,051 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 194.0) internal successors, (2328), 12 states have internal predecessors, (2328), 0 states have call successors, (0), 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 20:44:19,051 INFO L175 Difference]: Start difference. First operand has 537 places, 816 transitions, 20126 flow. Second operand 11 states and 1663 transitions. [2022-09-20 20:44:19,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 943 transitions, 22388 flow