/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:20:08,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:20:08,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:20:08,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:20:08,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:20:08,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:20:08,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:20:08,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:20:08,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:20:08,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:20:08,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:20:08,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:20:08,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:20:08,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:20:08,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:20:08,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:20:08,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:20:08,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:20:08,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:20:08,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:20:08,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:20:08,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:20:08,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:20:08,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:20:08,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:20:08,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:20:08,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:20:08,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:20:08,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:20:08,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:20:08,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:20:08,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:20:08,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:20:08,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:20:08,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:20:08,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:20:08,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:20:08,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:20:08,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:20:08,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:20:08,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:20:08,801 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-Before.epf [2022-01-19 07:20:08,823 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:20:08,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:20:08,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:20:08,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:20:08,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:20:08,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:20:08,824 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:20:08,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:20:08,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:20:08,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:20:08,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:20:08,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:20:08,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:20:08,826 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:20:08,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:20:08,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:20:09,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:20:09,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:20:09,009 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:20:09,010 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:20:09,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 07:20:09,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a00249d5/b24260ac6cbc4c1f8d032725edeaeea5/FLAGcf77641b2 [2022-01-19 07:20:09,453 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:20:09,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 07:20:09,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a00249d5/b24260ac6cbc4c1f8d032725edeaeea5/FLAGcf77641b2 [2022-01-19 07:20:09,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a00249d5/b24260ac6cbc4c1f8d032725edeaeea5 [2022-01-19 07:20:09,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:20:09,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:20:09,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:20:09,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:20:09,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:20:09,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae7dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09, skipping insertion in model container [2022-01-19 07:20:09,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:20:09,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:20:09,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-01-19 07:20:09,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:20:09,714 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:20:09,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-01-19 07:20:09,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:20:09,759 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:20:09,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09 WrapperNode [2022-01-19 07:20:09,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:20:09,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:20:09,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:20:09,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:20:09,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,797 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-01-19 07:20:09,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:20:09,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:20:09,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:20:09,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:20:09,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:20:09,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:20:09,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:20:09,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:20:09,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (1/1) ... [2022-01-19 07:20:09,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:20:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:20:09,860 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) [2022-01-19 07:20:09,875 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 [2022-01-19 07:20:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:20:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:20:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:20:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:20:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:20:09,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:20:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 07:20:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:20:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:20:09,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:20:09,894 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 07:20:09,961 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:20:09,962 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:20:10,297 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:20:10,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:20:10,309 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 07:20:10,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:20:10 BoogieIcfgContainer [2022-01-19 07:20:10,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:20:10,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:20:10,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:20:10,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:20:10,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:20:09" (1/3) ... [2022-01-19 07:20:10,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d7f693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:20:10, skipping insertion in model container [2022-01-19 07:20:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:20:09" (2/3) ... [2022-01-19 07:20:10,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d7f693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:20:10, skipping insertion in model container [2022-01-19 07:20:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:20:10" (3/3) ... [2022-01-19 07:20:10,319 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-01-19 07:20:10,322 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:20:10,322 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:20:10,322 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:20:10,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,394 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,395 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,410 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,411 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,415 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,419 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,420 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,421 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,423 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,433 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,434 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,435 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,437 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,438 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,439 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,439 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,439 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,447 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,448 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,449 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,450 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,451 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,452 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,453 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,455 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,455 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,457 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,458 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,459 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,459 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:20:10,462 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:20:10,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:20:10,503 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 07:20:10,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:20:10,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 07:20:10,616 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-01-19 07:20:10,617 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:20:10,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-01-19 07:20:10,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 07:20:10,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-01-19 07:20:10,666 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-01-19 07:20:10,666 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:20:10,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:10,667 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:10,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1863076525, now seen corresponding path program 1 times [2022-01-19 07:20:10,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:10,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500750249] [2022-01-19 07:20:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:10,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:10,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:10,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500750249] [2022-01-19 07:20:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500750249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:10,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:10,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 07:20:10,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988822286] [2022-01-19 07:20:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:10,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 07:20:10,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 07:20:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 07:20:10,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-01-19 07:20:10,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:10,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:10,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-01-19 07:20:10,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:11,004 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-01-19 07:20:11,005 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 07:20:11,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 499 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-01-19 07:20:11,010 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-01-19 07:20:11,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-01-19 07:20:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 07:20:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 07:20:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-01-19 07:20:11,024 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-01-19 07:20:11,025 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-01-19 07:20:11,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-01-19 07:20:11,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:11,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-01-19 07:20:11,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,046 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,048 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-01-19 07:20:11,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-01-19 07:20:11,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:20:11,060 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-01-19 07:20:11,062 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-01-19 07:20:11,065 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-01-19 07:20:11,065 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-01-19 07:20:11,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:11,066 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:20:11,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:11,067 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-01-19 07:20:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:11,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483319830] [2022-01-19 07:20:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:11,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:11,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:11,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483319830] [2022-01-19 07:20:11,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483319830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:11,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:11,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:11,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124084839] [2022-01-19 07:20:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:11,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:11,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:11,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 07:20:11,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:11,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 07:20:11,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:11,312 INFO L129 PetriNetUnfolder]: 50/489 cut-off events. [2022-01-19 07:20:11,312 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-01-19 07:20:11,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 489 events. 50/489 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1520 event pairs, 4 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 536. Up to 22 conditions per place. [2022-01-19 07:20:11,316 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-01-19 07:20:11,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-01-19 07:20:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-01-19 07:20:11,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-01-19 07:20:11,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-01-19 07:20:11,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-01-19 07:20:11,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:11,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-01-19 07:20:11,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,324 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-01-19 07:20:11,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-01-19 07:20:11,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:11,330 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-01-19 07:20:11,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-01-19 07:20:11,331 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-01-19 07:20:11,331 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-01-19 07:20:11,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,332 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:11,332 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:11,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:20:11,333 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1012256445, now seen corresponding path program 1 times [2022-01-19 07:20:11,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138193038] [2022-01-19 07:20:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:11,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:11,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:11,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138193038] [2022-01-19 07:20:11,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138193038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:11,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:11,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:11,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669787938] [2022-01-19 07:20:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:11,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:11,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:11,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 07:20:11,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:11,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 07:20:11,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:11,567 INFO L129 PetriNetUnfolder]: 59/555 cut-off events. [2022-01-19 07:20:11,567 INFO L130 PetriNetUnfolder]: For 29/31 co-relation queries the response was YES. [2022-01-19 07:20:11,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 555 events. 59/555 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1896 event pairs, 12 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 618. Up to 37 conditions per place. [2022-01-19 07:20:11,571 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/308 dead transitions. [2022-01-19 07:20:11,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 308 transitions, 661 flow [2022-01-19 07:20:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-01-19 07:20:11,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-01-19 07:20:11,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-01-19 07:20:11,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-01-19 07:20:11,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:11,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-01-19 07:20:11,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,578 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 3 states and 960 transitions. [2022-01-19 07:20:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 308 transitions, 661 flow [2022-01-19 07:20:11,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 308 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:11,582 INFO L242 Difference]: Finished difference. Result has 292 places, 304 transitions, 626 flow [2022-01-19 07:20:11,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=292, PETRI_TRANSITIONS=304} [2022-01-19 07:20:11,584 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -9 predicate places. [2022-01-19 07:20:11,585 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 304 transitions, 626 flow [2022-01-19 07:20:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,585 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:11,586 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:11,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:20:11,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1896015817, now seen corresponding path program 1 times [2022-01-19 07:20:11,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:11,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564964321] [2022-01-19 07:20:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:11,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:11,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564964321] [2022-01-19 07:20:11,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564964321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:11,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:11,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:20:11,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250050484] [2022-01-19 07:20:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:11,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:20:11,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:20:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:20:11,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 07:20:11,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 304 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:11,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 07:20:11,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:11,767 INFO L129 PetriNetUnfolder]: 48/577 cut-off events. [2022-01-19 07:20:11,767 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-01-19 07:20:11,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 577 events. 48/577 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2014 event pairs, 9 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 643. Up to 33 conditions per place. [2022-01-19 07:20:11,772 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2022-01-19 07:20:11,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 309 transitions, 670 flow [2022-01-19 07:20:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:20:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:20:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-01-19 07:20:11,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-01-19 07:20:11,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-01-19 07:20:11,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-01-19 07:20:11,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:11,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-01-19 07:20:11,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,802 INFO L186 Difference]: Start difference. First operand has 292 places, 304 transitions, 626 flow. Second operand 3 states and 961 transitions. [2022-01-19 07:20:11,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 309 transitions, 670 flow [2022-01-19 07:20:11,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 309 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:11,806 INFO L242 Difference]: Finished difference. Result has 293 places, 304 transitions, 630 flow [2022-01-19 07:20:11,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=293, PETRI_TRANSITIONS=304} [2022-01-19 07:20:11,807 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -8 predicate places. [2022-01-19 07:20:11,807 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 304 transitions, 630 flow [2022-01-19 07:20:11,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:11,808 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:11,808 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:11,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:20:11,808 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -644485703, now seen corresponding path program 1 times [2022-01-19 07:20:11,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:11,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760708545] [2022-01-19 07:20:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:11,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760708545] [2022-01-19 07:20:12,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760708545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:12,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:12,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-19 07:20:12,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122585698] [2022-01-19 07:20:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:12,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-19 07:20:12,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-19 07:20:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-01-19 07:20:12,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 07:20:12,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 304 transitions, 630 flow. Second operand has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:12,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:12,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 07:20:12,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:15,339 INFO L129 PetriNetUnfolder]: 3486/12164 cut-off events. [2022-01-19 07:20:15,340 INFO L130 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2022-01-19 07:20:15,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17945 conditions, 12164 events. 3486/12164 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 132684 event pairs, 1817 based on Foata normal form. 8/10465 useless extension candidates. Maximal degree in co-relation 17938. Up to 1584 conditions per place. [2022-01-19 07:20:15,416 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 203 selfloop transitions, 35 changer transitions 12/462 dead transitions. [2022-01-19 07:20:15,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 462 transitions, 1467 flow [2022-01-19 07:20:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:20:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:20:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8126 transitions. [2022-01-19 07:20:15,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6828571428571428 [2022-01-19 07:20:15,427 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8126 transitions. [2022-01-19 07:20:15,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8126 transitions. [2022-01-19 07:20:15,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:15,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8126 transitions. [2022-01-19 07:20:15,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.17142857142858) internal successors, (8126), 35 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:15,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:15,459 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:15,459 INFO L186 Difference]: Start difference. First operand has 293 places, 304 transitions, 630 flow. Second operand 35 states and 8126 transitions. [2022-01-19 07:20:15,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 462 transitions, 1467 flow [2022-01-19 07:20:15,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 462 transitions, 1463 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:20:15,468 INFO L242 Difference]: Finished difference. Result has 346 places, 327 transitions, 832 flow [2022-01-19 07:20:15,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=832, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-01-19 07:20:15,469 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 45 predicate places. [2022-01-19 07:20:15,470 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 832 flow [2022-01-19 07:20:15,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:15,471 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:15,471 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:15,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:20:15,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 774995195, now seen corresponding path program 2 times [2022-01-19 07:20:15,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:15,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548980127] [2022-01-19 07:20:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:15,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:16,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:16,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548980127] [2022-01-19 07:20:16,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548980127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:16,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:16,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-19 07:20:16,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132932013] [2022-01-19 07:20:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 07:20:16,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 07:20:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-19 07:20:16,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 07:20:16,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 832 flow. Second operand has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:16,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:16,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 07:20:16,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:20,007 INFO L129 PetriNetUnfolder]: 4619/18481 cut-off events. [2022-01-19 07:20:20,008 INFO L130 PetriNetUnfolder]: For 3301/3339 co-relation queries the response was YES. [2022-01-19 07:20:20,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29141 conditions, 18481 events. 4619/18481 cut-off events. For 3301/3339 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 223761 event pairs, 2406 based on Foata normal form. 19/15946 useless extension candidates. Maximal degree in co-relation 29113. Up to 2682 conditions per place. [2022-01-19 07:20:20,139 INFO L132 encePairwiseOnDemand]: 303/340 looper letters, 231 selfloop transitions, 38 changer transitions 12/493 dead transitions. [2022-01-19 07:20:20,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 493 transitions, 1887 flow [2022-01-19 07:20:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 07:20:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 07:20:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8601 transitions. [2022-01-19 07:20:20,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6837042925278219 [2022-01-19 07:20:20,152 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8601 transitions. [2022-01-19 07:20:20,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8601 transitions. [2022-01-19 07:20:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:20,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8601 transitions. [2022-01-19 07:20:20,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 232.45945945945945) internal successors, (8601), 37 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,184 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,184 INFO L186 Difference]: Start difference. First operand has 346 places, 327 transitions, 832 flow. Second operand 37 states and 8601 transitions. [2022-01-19 07:20:20,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 493 transitions, 1887 flow [2022-01-19 07:20:20,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 493 transitions, 1805 flow, removed 35 selfloop flow, removed 12 redundant places. [2022-01-19 07:20:20,209 INFO L242 Difference]: Finished difference. Result has 376 places, 337 transitions, 985 flow [2022-01-19 07:20:20,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=985, PETRI_PLACES=376, PETRI_TRANSITIONS=337} [2022-01-19 07:20:20,212 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 07:20:20,212 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 337 transitions, 985 flow [2022-01-19 07:20:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:20,213 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:20,213 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:20,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:20:20,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1654135811, now seen corresponding path program 3 times [2022-01-19 07:20:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:20,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162942175] [2022-01-19 07:20:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:20,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:21,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:21,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162942175] [2022-01-19 07:20:21,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162942175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:21,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:21,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-19 07:20:21,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755412126] [2022-01-19 07:20:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:21,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 07:20:21,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 07:20:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 07:20:21,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 340 [2022-01-19 07:20:21,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 337 transitions, 985 flow. Second operand has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:21,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:21,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 340 [2022-01-19 07:20:21,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:26,562 INFO L129 PetriNetUnfolder]: 6090/22974 cut-off events. [2022-01-19 07:20:26,562 INFO L130 PetriNetUnfolder]: For 6886/6891 co-relation queries the response was YES. [2022-01-19 07:20:26,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37550 conditions, 22974 events. 6090/22974 cut-off events. For 6886/6891 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 288022 event pairs, 3330 based on Foata normal form. 10/19953 useless extension candidates. Maximal degree in co-relation 37515. Up to 1765 conditions per place. [2022-01-19 07:20:26,730 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 283 selfloop transitions, 42 changer transitions 13/547 dead transitions. [2022-01-19 07:20:26,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 547 transitions, 2228 flow [2022-01-19 07:20:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 07:20:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 07:20:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 9881 transitions. [2022-01-19 07:20:26,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6758549931600547 [2022-01-19 07:20:26,740 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 9881 transitions. [2022-01-19 07:20:26,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 9881 transitions. [2022-01-19 07:20:26,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:26,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 9881 transitions. [2022-01-19 07:20:26,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 229.7906976744186) internal successors, (9881), 43 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:26,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:26,777 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:26,777 INFO L186 Difference]: Start difference. First operand has 376 places, 337 transitions, 985 flow. Second operand 43 states and 9881 transitions. [2022-01-19 07:20:26,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 547 transitions, 2228 flow [2022-01-19 07:20:26,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 547 transitions, 2141 flow, removed 15 selfloop flow, removed 25 redundant places. [2022-01-19 07:20:26,804 INFO L242 Difference]: Finished difference. Result has 400 places, 340 transitions, 1055 flow [2022-01-19 07:20:26,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1055, PETRI_PLACES=400, PETRI_TRANSITIONS=340} [2022-01-19 07:20:26,805 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 99 predicate places. [2022-01-19 07:20:26,805 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 340 transitions, 1055 flow [2022-01-19 07:20:26,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:26,807 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:26,807 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:20:26,807 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 855339755, now seen corresponding path program 1 times [2022-01-19 07:20:26,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:26,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568915637] [2022-01-19 07:20:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:26,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:26,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:26,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568915637] [2022-01-19 07:20:26,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568915637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:26,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:26,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:26,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778191810] [2022-01-19 07:20:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:26,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:26,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 340 transitions, 1055 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:26,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:26,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:26,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:28,751 INFO L129 PetriNetUnfolder]: 2579/17203 cut-off events. [2022-01-19 07:20:28,752 INFO L130 PetriNetUnfolder]: For 3056/3222 co-relation queries the response was YES. [2022-01-19 07:20:28,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24275 conditions, 17203 events. 2579/17203 cut-off events. For 3056/3222 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 225731 event pairs, 1106 based on Foata normal form. 12/14899 useless extension candidates. Maximal degree in co-relation 24233. Up to 1742 conditions per place. [2022-01-19 07:20:29,002 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 38 selfloop transitions, 3 changer transitions 0/357 dead transitions. [2022-01-19 07:20:29,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 357 transitions, 1178 flow [2022-01-19 07:20:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2022-01-19 07:20:29,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9169117647058823 [2022-01-19 07:20:29,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2022-01-19 07:20:29,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2022-01-19 07:20:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:29,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2022-01-19 07:20:29,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:29,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:29,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:29,010 INFO L186 Difference]: Start difference. First operand has 400 places, 340 transitions, 1055 flow. Second operand 4 states and 1247 transitions. [2022-01-19 07:20:29,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 357 transitions, 1178 flow [2022-01-19 07:20:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 357 transitions, 1058 flow, removed 12 selfloop flow, removed 42 redundant places. [2022-01-19 07:20:29,067 INFO L242 Difference]: Finished difference. Result has 357 places, 341 transitions, 953 flow [2022-01-19 07:20:29,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=953, PETRI_PLACES=357, PETRI_TRANSITIONS=341} [2022-01-19 07:20:29,069 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 56 predicate places. [2022-01-19 07:20:29,069 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 341 transitions, 953 flow [2022-01-19 07:20:29,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:29,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:29,070 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:29,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 07:20:29,070 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1552621851, now seen corresponding path program 2 times [2022-01-19 07:20:29,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438082222] [2022-01-19 07:20:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:29,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:29,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438082222] [2022-01-19 07:20:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438082222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:29,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:29,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151905510] [2022-01-19 07:20:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:29,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:29,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:29,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:29,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 341 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:29,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:29,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:29,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:32,108 INFO L129 PetriNetUnfolder]: 3384/26777 cut-off events. [2022-01-19 07:20:32,109 INFO L130 PetriNetUnfolder]: For 6136/6452 co-relation queries the response was YES. [2022-01-19 07:20:32,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36256 conditions, 26777 events. 3384/26777 cut-off events. For 6136/6452 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 399920 event pairs, 966 based on Foata normal form. 97/24799 useless extension candidates. Maximal degree in co-relation 36223. Up to 1892 conditions per place. [2022-01-19 07:20:32,266 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 53 selfloop transitions, 12 changer transitions 0/381 dead transitions. [2022-01-19 07:20:32,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 381 transitions, 1207 flow [2022-01-19 07:20:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 07:20:32,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 07:20:32,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 07:20:32,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 07:20:32,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:32,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 07:20:32,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:32,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:32,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:32,271 INFO L186 Difference]: Start difference. First operand has 357 places, 341 transitions, 953 flow. Second operand 5 states and 1569 transitions. [2022-01-19 07:20:32,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 381 transitions, 1207 flow [2022-01-19 07:20:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 381 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:20:32,324 INFO L242 Difference]: Finished difference. Result has 363 places, 353 transitions, 1051 flow [2022-01-19 07:20:32,324 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=363, PETRI_TRANSITIONS=353} [2022-01-19 07:20:32,325 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 62 predicate places. [2022-01-19 07:20:32,325 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 353 transitions, 1051 flow [2022-01-19 07:20:32,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:32,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:32,325 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:32,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:20:32,325 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:32,326 INFO L85 PathProgramCache]: Analyzing trace with hash 761523921, now seen corresponding path program 1 times [2022-01-19 07:20:32,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:32,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116282241] [2022-01-19 07:20:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:32,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:32,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:32,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116282241] [2022-01-19 07:20:32,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116282241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:32,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:32,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:32,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278567106] [2022-01-19 07:20:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:32,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:32,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:32,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:32,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 353 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:32,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:32,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:32,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:36,429 INFO L129 PetriNetUnfolder]: 4020/34788 cut-off events. [2022-01-19 07:20:36,429 INFO L130 PetriNetUnfolder]: For 10891/11161 co-relation queries the response was YES. [2022-01-19 07:20:36,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48950 conditions, 34788 events. 4020/34788 cut-off events. For 10891/11161 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 539664 event pairs, 1748 based on Foata normal form. 58/32497 useless extension candidates. Maximal degree in co-relation 48914. Up to 4047 conditions per place. [2022-01-19 07:20:36,709 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 52 selfloop transitions, 7 changer transitions 0/375 dead transitions. [2022-01-19 07:20:36,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 375 transitions, 1264 flow [2022-01-19 07:20:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 07:20:36,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 07:20:36,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 07:20:36,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 07:20:36,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:36,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 07:20:36,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:36,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:36,714 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:36,714 INFO L186 Difference]: Start difference. First operand has 363 places, 353 transitions, 1051 flow. Second operand 4 states and 1248 transitions. [2022-01-19 07:20:36,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 375 transitions, 1264 flow [2022-01-19 07:20:36,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 375 transitions, 1256 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 07:20:36,818 INFO L242 Difference]: Finished difference. Result has 368 places, 357 transitions, 1108 flow [2022-01-19 07:20:36,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=368, PETRI_TRANSITIONS=357} [2022-01-19 07:20:36,819 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 67 predicate places. [2022-01-19 07:20:36,819 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 357 transitions, 1108 flow [2022-01-19 07:20:36,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:36,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:36,820 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:36,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:20:36,820 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:36,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1326530775, now seen corresponding path program 1 times [2022-01-19 07:20:36,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:36,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739276915] [2022-01-19 07:20:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:36,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:36,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:36,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739276915] [2022-01-19 07:20:36,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739276915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:36,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:36,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:36,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448175499] [2022-01-19 07:20:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:36,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:36,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:36,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:36,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 357 transitions, 1108 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:36,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:36,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:36,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:40,712 INFO L129 PetriNetUnfolder]: 3952/34138 cut-off events. [2022-01-19 07:20:40,713 INFO L130 PetriNetUnfolder]: For 13278/13524 co-relation queries the response was YES. [2022-01-19 07:20:40,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48748 conditions, 34138 events. 3952/34138 cut-off events. For 13278/13524 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 527107 event pairs, 1670 based on Foata normal form. 20/31911 useless extension candidates. Maximal degree in co-relation 48709. Up to 4183 conditions per place. [2022-01-19 07:20:41,033 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 53 selfloop transitions, 8 changer transitions 0/377 dead transitions. [2022-01-19 07:20:41,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 377 transitions, 1341 flow [2022-01-19 07:20:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1246 transitions. [2022-01-19 07:20:41,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9161764705882353 [2022-01-19 07:20:41,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1246 transitions. [2022-01-19 07:20:41,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1246 transitions. [2022-01-19 07:20:41,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:41,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1246 transitions. [2022-01-19 07:20:41,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,038 INFO L186 Difference]: Start difference. First operand has 368 places, 357 transitions, 1108 flow. Second operand 4 states and 1246 transitions. [2022-01-19 07:20:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 377 transitions, 1341 flow [2022-01-19 07:20:41,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 377 transitions, 1337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:20:41,287 INFO L242 Difference]: Finished difference. Result has 372 places, 363 transitions, 1213 flow [2022-01-19 07:20:41,288 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1213, PETRI_PLACES=372, PETRI_TRANSITIONS=363} [2022-01-19 07:20:41,288 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 71 predicate places. [2022-01-19 07:20:41,288 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 363 transitions, 1213 flow [2022-01-19 07:20:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,289 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:41,289 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:41,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 07:20:41,289 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash -436319363, now seen corresponding path program 2 times [2022-01-19 07:20:41,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:41,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951333262] [2022-01-19 07:20:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:41,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:41,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:41,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951333262] [2022-01-19 07:20:41,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951333262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:41,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:41,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:20:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144353972] [2022-01-19 07:20:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:41,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:20:41,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:20:41,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:20:41,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:41,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 363 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:41,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:41,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:41,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:45,060 INFO L129 PetriNetUnfolder]: 3861/33127 cut-off events. [2022-01-19 07:20:45,060 INFO L130 PetriNetUnfolder]: For 16691/16982 co-relation queries the response was YES. [2022-01-19 07:20:45,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48295 conditions, 33127 events. 3861/33127 cut-off events. For 16691/16982 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 508943 event pairs, 1196 based on Foata normal form. 103/30993 useless extension candidates. Maximal degree in co-relation 48254. Up to 2558 conditions per place. [2022-01-19 07:20:45,385 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 52 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2022-01-19 07:20:45,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 386 transitions, 1457 flow [2022-01-19 07:20:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:20:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:20:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 07:20:45,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 07:20:45,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 07:20:45,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 07:20:45,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:45,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 07:20:45,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,390 INFO L186 Difference]: Start difference. First operand has 372 places, 363 transitions, 1213 flow. Second operand 4 states and 1248 transitions. [2022-01-19 07:20:45,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 386 transitions, 1457 flow [2022-01-19 07:20:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 386 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:20:45,629 INFO L242 Difference]: Finished difference. Result has 376 places, 366 transitions, 1303 flow [2022-01-19 07:20:45,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=376, PETRI_TRANSITIONS=366} [2022-01-19 07:20:45,630 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 07:20:45,630 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 366 transitions, 1303 flow [2022-01-19 07:20:45,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:45,631 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:45,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:20:45,631 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:45,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:45,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1008316741, now seen corresponding path program 1 times [2022-01-19 07:20:45,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:45,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050575240] [2022-01-19 07:20:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:45,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:45,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:45,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050575240] [2022-01-19 07:20:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050575240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:45,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:45,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:20:45,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388862108] [2022-01-19 07:20:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:20:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:20:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:20:45,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 07:20:45,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 366 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:45,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:45,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 07:20:45,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:47,797 INFO L129 PetriNetUnfolder]: 886/15274 cut-off events. [2022-01-19 07:20:47,797 INFO L130 PetriNetUnfolder]: For 8814/10372 co-relation queries the response was YES. [2022-01-19 07:20:47,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24091 conditions, 15274 events. 886/15274 cut-off events. For 8814/10372 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 219244 event pairs, 132 based on Foata normal form. 274/14619 useless extension candidates. Maximal degree in co-relation 24048. Up to 3915 conditions per place. [2022-01-19 07:20:47,915 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 64 selfloop transitions, 3 changer transitions 6/380 dead transitions. [2022-01-19 07:20:47,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 380 transitions, 1482 flow [2022-01-19 07:20:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:20:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:20:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 07:20:47,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 07:20:47,917 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 07:20:47,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 07:20:47,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:47,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 07:20:47,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 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) [2022-01-19 07:20:47,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:47,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:47,921 INFO L186 Difference]: Start difference. First operand has 376 places, 366 transitions, 1303 flow. Second operand 7 states and 1964 transitions. [2022-01-19 07:20:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 380 transitions, 1482 flow [2022-01-19 07:20:47,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 380 transitions, 1467 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:20:47,952 INFO L242 Difference]: Finished difference. Result has 386 places, 366 transitions, 1283 flow [2022-01-19 07:20:47,952 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1283, PETRI_PLACES=386, PETRI_TRANSITIONS=366} [2022-01-19 07:20:47,954 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 07:20:47,954 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 366 transitions, 1283 flow [2022-01-19 07:20:47,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:47,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:47,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:47,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 07:20:47,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1945760589, now seen corresponding path program 1 times [2022-01-19 07:20:47,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353244765] [2022-01-19 07:20:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:47,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:48,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:48,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353244765] [2022-01-19 07:20:48,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353244765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:48,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:48,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:20:48,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684522453] [2022-01-19 07:20:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:48,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:20:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:20:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:20:48,004 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 07:20:48,004 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 366 transitions, 1283 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:48,004 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:48,004 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 07:20:48,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:50,092 INFO L129 PetriNetUnfolder]: 1020/15697 cut-off events. [2022-01-19 07:20:50,093 INFO L130 PetriNetUnfolder]: For 9513/11068 co-relation queries the response was YES. [2022-01-19 07:20:50,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 15697 events. 1020/15697 cut-off events. For 9513/11068 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 225768 event pairs, 102 based on Foata normal form. 248/14877 useless extension candidates. Maximal degree in co-relation 25371. Up to 2837 conditions per place. [2022-01-19 07:20:50,230 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 14/378 dead transitions. [2022-01-19 07:20:50,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 378 transitions, 1462 flow [2022-01-19 07:20:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:20:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:20:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 07:20:50,233 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 07:20:50,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 07:20:50,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 07:20:50,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:50,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 07:20:50,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 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) [2022-01-19 07:20:50,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:50,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:50,237 INFO L186 Difference]: Start difference. First operand has 386 places, 366 transitions, 1283 flow. Second operand 7 states and 1964 transitions. [2022-01-19 07:20:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 378 transitions, 1462 flow [2022-01-19 07:20:50,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 378 transitions, 1445 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 07:20:50,296 INFO L242 Difference]: Finished difference. Result has 389 places, 359 transitions, 1178 flow [2022-01-19 07:20:50,297 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1178, PETRI_PLACES=389, PETRI_TRANSITIONS=359} [2022-01-19 07:20:50,297 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 88 predicate places. [2022-01-19 07:20:50,297 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 359 transitions, 1178 flow [2022-01-19 07:20:50,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:50,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:50,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:50,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 07:20:50,298 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash 728092825, now seen corresponding path program 1 times [2022-01-19 07:20:50,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:50,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260995244] [2022-01-19 07:20:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:50,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:50,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260995244] [2022-01-19 07:20:50,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260995244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:50,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:50,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:20:50,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533889901] [2022-01-19 07:20:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:50,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:20:50,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:20:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:20:50,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:50,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 359 transitions, 1178 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:50,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:50,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:50,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:54,204 INFO L129 PetriNetUnfolder]: 3557/30703 cut-off events. [2022-01-19 07:20:54,205 INFO L130 PetriNetUnfolder]: For 17651/18284 co-relation queries the response was YES. [2022-01-19 07:20:54,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47685 conditions, 30703 events. 3557/30703 cut-off events. For 17651/18284 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 474974 event pairs, 656 based on Foata normal form. 130/28895 useless extension candidates. Maximal degree in co-relation 47637. Up to 1895 conditions per place. [2022-01-19 07:20:54,448 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 21 changer transitions 25/414 dead transitions. [2022-01-19 07:20:54,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 414 transitions, 1690 flow [2022-01-19 07:20:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 07:20:54,450 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 07:20:54,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 07:20:54,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 07:20:54,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:54,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 07:20:54,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:54,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:54,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:54,453 INFO L186 Difference]: Start difference. First operand has 389 places, 359 transitions, 1178 flow. Second operand 5 states and 1569 transitions. [2022-01-19 07:20:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 414 transitions, 1690 flow [2022-01-19 07:20:54,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 1661 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 07:20:54,624 INFO L242 Difference]: Finished difference. Result has 386 places, 365 transitions, 1322 flow [2022-01-19 07:20:54,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=386, PETRI_TRANSITIONS=365} [2022-01-19 07:20:54,625 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 07:20:54,625 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 365 transitions, 1322 flow [2022-01-19 07:20:54,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:54,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:54,625 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:54,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 07:20:54,625 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2052109271, now seen corresponding path program 2 times [2022-01-19 07:20:54,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:54,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874997137] [2022-01-19 07:20:54,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:54,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:54,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874997137] [2022-01-19 07:20:54,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874997137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:54,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:20:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078341452] [2022-01-19 07:20:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:54,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:20:54,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:20:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:20:54,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:20:54,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 365 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:54,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:54,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:20:54,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:20:58,060 INFO L129 PetriNetUnfolder]: 2763/26734 cut-off events. [2022-01-19 07:20:58,060 INFO L130 PetriNetUnfolder]: For 23794/24463 co-relation queries the response was YES. [2022-01-19 07:20:58,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42697 conditions, 26734 events. 2763/26734 cut-off events. For 23794/24463 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 399264 event pairs, 565 based on Foata normal form. 36/25186 useless extension candidates. Maximal degree in co-relation 42651. Up to 1392 conditions per place. [2022-01-19 07:20:58,275 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 73 selfloop transitions, 15 changer transitions 0/400 dead transitions. [2022-01-19 07:20:58,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 400 transitions, 1778 flow [2022-01-19 07:20:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:20:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:20:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 07:20:58,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 07:20:58,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 07:20:58,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 07:20:58,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:20:58,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 07:20:58,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:58,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:58,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:58,280 INFO L186 Difference]: Start difference. First operand has 386 places, 365 transitions, 1322 flow. Second operand 5 states and 1554 transitions. [2022-01-19 07:20:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 400 transitions, 1778 flow [2022-01-19 07:20:58,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 400 transitions, 1708 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-01-19 07:20:58,398 INFO L242 Difference]: Finished difference. Result has 378 places, 373 transitions, 1433 flow [2022-01-19 07:20:58,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1433, PETRI_PLACES=378, PETRI_TRANSITIONS=373} [2022-01-19 07:20:58,398 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 77 predicate places. [2022-01-19 07:20:58,398 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 373 transitions, 1433 flow [2022-01-19 07:20:58,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:58,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:20:58,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:20:58,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 07:20:58,399 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:20:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:20:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1572503803, now seen corresponding path program 1 times [2022-01-19 07:20:58,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:20:58,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168768233] [2022-01-19 07:20:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:20:58,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:20:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:20:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:20:58,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:20:58,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168768233] [2022-01-19 07:20:58,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168768233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:20:58,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:20:58,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:20:58,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67647082] [2022-01-19 07:20:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:20:58,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:20:58,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:20:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:20:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:20:58,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:20:58,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 373 transitions, 1433 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:20:58,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:20:58,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:20:58,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:03,781 INFO L129 PetriNetUnfolder]: 9043/38001 cut-off events. [2022-01-19 07:21:03,781 INFO L130 PetriNetUnfolder]: For 22109/23019 co-relation queries the response was YES. [2022-01-19 07:21:04,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67137 conditions, 38001 events. 9043/38001 cut-off events. For 22109/23019 co-relation queries the response was YES. Maximal size of possible extension queue 2516. Compared 570437 event pairs, 5813 based on Foata normal form. 69/34460 useless extension candidates. Maximal degree in co-relation 67092. Up to 14979 conditions per place. [2022-01-19 07:21:04,237 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 102 selfloop transitions, 12 changer transitions 17/439 dead transitions. [2022-01-19 07:21:04,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 439 transitions, 1909 flow [2022-01-19 07:21:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 07:21:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 07:21:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 07:21:04,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 07:21:04,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 07:21:04,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 07:21:04,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:04,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 07:21:04,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,245 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,245 INFO L186 Difference]: Start difference. First operand has 378 places, 373 transitions, 1433 flow. Second operand 13 states and 3558 transitions. [2022-01-19 07:21:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 439 transitions, 1909 flow [2022-01-19 07:21:04,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 439 transitions, 1905 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 07:21:04,302 INFO L242 Difference]: Finished difference. Result has 399 places, 384 transitions, 1518 flow [2022-01-19 07:21:04,302 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1518, PETRI_PLACES=399, PETRI_TRANSITIONS=384} [2022-01-19 07:21:04,302 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-01-19 07:21:04,302 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 384 transitions, 1518 flow [2022-01-19 07:21:04,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:04,303 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:04,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 07:21:04,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 113123015, now seen corresponding path program 3 times [2022-01-19 07:21:04,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:04,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608071082] [2022-01-19 07:21:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:04,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:04,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:04,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608071082] [2022-01-19 07:21:04,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608071082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:04,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:04,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:04,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608961776] [2022-01-19 07:21:04,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:04,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:04,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:04,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:04,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 384 transitions, 1518 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:04,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:04,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:04,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:07,986 INFO L129 PetriNetUnfolder]: 2786/27583 cut-off events. [2022-01-19 07:21:07,986 INFO L130 PetriNetUnfolder]: For 25452/25788 co-relation queries the response was YES. [2022-01-19 07:21:08,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49420 conditions, 27583 events. 2786/27583 cut-off events. For 25452/25788 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 424393 event pairs, 723 based on Foata normal form. 82/26028 useless extension candidates. Maximal degree in co-relation 49365. Up to 1617 conditions per place. [2022-01-19 07:21:08,464 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 29 changer transitions 1/414 dead transitions. [2022-01-19 07:21:08,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 414 transitions, 1907 flow [2022-01-19 07:21:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2022-01-19 07:21:08,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9188235294117647 [2022-01-19 07:21:08,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2022-01-19 07:21:08,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2022-01-19 07:21:08,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:08,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2022-01-19 07:21:08,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.4) internal successors, (1562), 5 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:08,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:08,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:08,473 INFO L186 Difference]: Start difference. First operand has 399 places, 384 transitions, 1518 flow. Second operand 5 states and 1562 transitions. [2022-01-19 07:21:08,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 414 transitions, 1907 flow [2022-01-19 07:21:08,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 414 transitions, 1903 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 07:21:08,773 INFO L242 Difference]: Finished difference. Result has 403 places, 391 transitions, 1730 flow [2022-01-19 07:21:08,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1730, PETRI_PLACES=403, PETRI_TRANSITIONS=391} [2022-01-19 07:21:08,774 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 102 predicate places. [2022-01-19 07:21:08,774 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 391 transitions, 1730 flow [2022-01-19 07:21:08,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:08,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:08,774 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:08,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 07:21:08,774 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:08,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash 94491573, now seen corresponding path program 4 times [2022-01-19 07:21:08,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252111273] [2022-01-19 07:21:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:08,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:08,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:08,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252111273] [2022-01-19 07:21:08,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252111273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:08,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:08,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:08,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603220493] [2022-01-19 07:21:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:08,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:08,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:08,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:08,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 391 transitions, 1730 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:08,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:08,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:08,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:12,843 INFO L129 PetriNetUnfolder]: 3027/30964 cut-off events. [2022-01-19 07:21:12,843 INFO L130 PetriNetUnfolder]: For 35000/35336 co-relation queries the response was YES. [2022-01-19 07:21:13,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54041 conditions, 30964 events. 3027/30964 cut-off events. For 35000/35336 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 478622 event pairs, 582 based on Foata normal form. 88/29115 useless extension candidates. Maximal degree in co-relation 53984. Up to 2365 conditions per place. [2022-01-19 07:21:13,364 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 28 changer transitions 0/412 dead transitions. [2022-01-19 07:21:13,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 412 transitions, 2039 flow [2022-01-19 07:21:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 07:21:13,367 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 07:21:13,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 07:21:13,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 07:21:13,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:13,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 07:21:13,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,386 INFO L186 Difference]: Start difference. First operand has 403 places, 391 transitions, 1730 flow. Second operand 5 states and 1559 transitions. [2022-01-19 07:21:13,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 412 transitions, 2039 flow [2022-01-19 07:21:13,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 412 transitions, 2029 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 07:21:13,652 INFO L242 Difference]: Finished difference. Result has 410 places, 395 transitions, 1894 flow [2022-01-19 07:21:13,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1894, PETRI_PLACES=410, PETRI_TRANSITIONS=395} [2022-01-19 07:21:13,652 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-01-19 07:21:13,652 INFO L470 AbstractCegarLoop]: Abstraction has has 410 places, 395 transitions, 1894 flow [2022-01-19 07:21:13,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:13,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 07:21:13,653 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 798531221, now seen corresponding path program 1 times [2022-01-19 07:21:13,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:13,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371915790] [2022-01-19 07:21:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:13,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:13,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371915790] [2022-01-19 07:21:13,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371915790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:13,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:13,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:13,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060025640] [2022-01-19 07:21:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:13,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:13,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:13,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:13,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:13,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 395 transitions, 1894 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:13,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:13,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:13,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:18,224 INFO L129 PetriNetUnfolder]: 3013/33069 cut-off events. [2022-01-19 07:21:18,224 INFO L130 PetriNetUnfolder]: For 44463/44958 co-relation queries the response was YES. [2022-01-19 07:21:18,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58760 conditions, 33069 events. 3013/33069 cut-off events. For 44463/44958 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 522784 event pairs, 785 based on Foata normal form. 143/31160 useless extension candidates. Maximal degree in co-relation 58699. Up to 1844 conditions per place. [2022-01-19 07:21:18,590 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 112 selfloop transitions, 8 changer transitions 0/443 dead transitions. [2022-01-19 07:21:18,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 443 transitions, 2640 flow [2022-01-19 07:21:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 07:21:18,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 07:21:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 07:21:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 07:21:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:18,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 07:21:18,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:18,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:18,594 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:18,594 INFO L186 Difference]: Start difference. First operand has 410 places, 395 transitions, 1894 flow. Second operand 5 states and 1554 transitions. [2022-01-19 07:21:18,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 443 transitions, 2640 flow [2022-01-19 07:21:19,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 443 transitions, 2630 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 07:21:19,006 INFO L242 Difference]: Finished difference. Result has 416 places, 397 transitions, 1938 flow [2022-01-19 07:21:19,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1938, PETRI_PLACES=416, PETRI_TRANSITIONS=397} [2022-01-19 07:21:19,006 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 115 predicate places. [2022-01-19 07:21:19,006 INFO L470 AbstractCegarLoop]: Abstraction has has 416 places, 397 transitions, 1938 flow [2022-01-19 07:21:19,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:19,007 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:19,007 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:19,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 07:21:19,007 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash 581407537, now seen corresponding path program 2 times [2022-01-19 07:21:19,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:19,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923570523] [2022-01-19 07:21:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:19,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923570523] [2022-01-19 07:21:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923570523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:19,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:19,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:19,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282379408] [2022-01-19 07:21:19,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:19,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:19,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:19,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:19,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:19,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:19,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 397 transitions, 1938 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:19,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:19,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:19,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:24,537 INFO L129 PetriNetUnfolder]: 3627/38791 cut-off events. [2022-01-19 07:21:24,537 INFO L130 PetriNetUnfolder]: For 52350/52893 co-relation queries the response was YES. [2022-01-19 07:21:24,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71025 conditions, 38791 events. 3627/38791 cut-off events. For 52350/52893 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 634805 event pairs, 944 based on Foata normal form. 56/36573 useless extension candidates. Maximal degree in co-relation 70961. Up to 2970 conditions per place. [2022-01-19 07:21:24,970 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 95 selfloop transitions, 27 changer transitions 0/445 dead transitions. [2022-01-19 07:21:24,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 445 transitions, 2662 flow [2022-01-19 07:21:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1561 transitions. [2022-01-19 07:21:24,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.918235294117647 [2022-01-19 07:21:24,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1561 transitions. [2022-01-19 07:21:24,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1561 transitions. [2022-01-19 07:21:24,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:24,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1561 transitions. [2022-01-19 07:21:24,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.2) internal successors, (1561), 5 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:24,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:24,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:24,974 INFO L186 Difference]: Start difference. First operand has 416 places, 397 transitions, 1938 flow. Second operand 5 states and 1561 transitions. [2022-01-19 07:21:24,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 445 transitions, 2662 flow [2022-01-19 07:21:25,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 445 transitions, 2643 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-01-19 07:21:25,657 INFO L242 Difference]: Finished difference. Result has 422 places, 409 transitions, 2196 flow [2022-01-19 07:21:25,657 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2196, PETRI_PLACES=422, PETRI_TRANSITIONS=409} [2022-01-19 07:21:25,657 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 121 predicate places. [2022-01-19 07:21:25,658 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 409 transitions, 2196 flow [2022-01-19 07:21:25,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:25,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:25,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:25,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 07:21:25,658 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:25,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 121606111, now seen corresponding path program 5 times [2022-01-19 07:21:25,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:25,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145817722] [2022-01-19 07:21:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:25,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:25,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:25,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145817722] [2022-01-19 07:21:25,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145817722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:25,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:25,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:25,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994378873] [2022-01-19 07:21:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:25,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:25,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:25,716 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:25,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 409 transitions, 2196 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:25,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:25,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:25,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:31,230 INFO L129 PetriNetUnfolder]: 3736/40258 cut-off events. [2022-01-19 07:21:31,230 INFO L130 PetriNetUnfolder]: For 61556/62051 co-relation queries the response was YES. [2022-01-19 07:21:31,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73868 conditions, 40258 events. 3736/40258 cut-off events. For 61556/62051 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 655201 event pairs, 936 based on Foata normal form. 70/37872 useless extension candidates. Maximal degree in co-relation 73801. Up to 3193 conditions per place. [2022-01-19 07:21:31,691 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 80 selfloop transitions, 25 changer transitions 0/428 dead transitions. [2022-01-19 07:21:31,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 428 transitions, 2500 flow [2022-01-19 07:21:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 07:21:31,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 07:21:31,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 07:21:31,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 07:21:31,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:31,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 07:21:31,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:31,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:31,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:31,695 INFO L186 Difference]: Start difference. First operand has 422 places, 409 transitions, 2196 flow. Second operand 5 states and 1557 transitions. [2022-01-19 07:21:31,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 428 transitions, 2500 flow [2022-01-19 07:21:32,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 428 transitions, 2440 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-01-19 07:21:32,538 INFO L242 Difference]: Finished difference. Result has 426 places, 408 transitions, 2175 flow [2022-01-19 07:21:32,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2175, PETRI_PLACES=426, PETRI_TRANSITIONS=408} [2022-01-19 07:21:32,538 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 125 predicate places. [2022-01-19 07:21:32,539 INFO L470 AbstractCegarLoop]: Abstraction has has 426 places, 408 transitions, 2175 flow [2022-01-19 07:21:32,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:32,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:32,539 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:32,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 07:21:32,539 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash 32140543, now seen corresponding path program 2 times [2022-01-19 07:21:32,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828633158] [2022-01-19 07:21:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:32,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:32,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828633158] [2022-01-19 07:21:32,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828633158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:32,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:32,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:21:32,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396095618] [2022-01-19 07:21:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:32,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:21:32,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:21:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:21:32,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:21:32,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 408 transitions, 2175 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:32,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:32,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:21:32,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:41,649 INFO L129 PetriNetUnfolder]: 13285/55387 cut-off events. [2022-01-19 07:21:41,649 INFO L130 PetriNetUnfolder]: For 59657/61991 co-relation queries the response was YES. [2022-01-19 07:21:42,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120382 conditions, 55387 events. 13285/55387 cut-off events. For 59657/61991 co-relation queries the response was YES. Maximal size of possible extension queue 4095. Compared 885253 event pairs, 5024 based on Foata normal form. 136/50652 useless extension candidates. Maximal degree in co-relation 120314. Up to 14044 conditions per place. [2022-01-19 07:21:42,455 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 109 selfloop transitions, 18 changer transitions 16/475 dead transitions. [2022-01-19 07:21:42,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 475 transitions, 2736 flow [2022-01-19 07:21:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 07:21:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 07:21:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 07:21:42,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 07:21:42,458 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 07:21:42,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 07:21:42,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:42,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 07:21:42,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:42,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:42,463 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:42,463 INFO L186 Difference]: Start difference. First operand has 426 places, 408 transitions, 2175 flow. Second operand 13 states and 3556 transitions. [2022-01-19 07:21:42,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 475 transitions, 2736 flow [2022-01-19 07:21:44,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 475 transitions, 2701 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:21:44,047 INFO L242 Difference]: Finished difference. Result has 446 places, 419 transitions, 2293 flow [2022-01-19 07:21:44,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2293, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-01-19 07:21:44,048 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 145 predicate places. [2022-01-19 07:21:44,048 INFO L470 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 2293 flow [2022-01-19 07:21:44,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:44,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:44,049 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:44,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 07:21:44,049 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 850323031, now seen corresponding path program 3 times [2022-01-19 07:21:44,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790329470] [2022-01-19 07:21:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:44,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:44,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:44,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790329470] [2022-01-19 07:21:44,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790329470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:44,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:44,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:21:44,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407367698] [2022-01-19 07:21:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:44,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:21:44,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:21:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:21:44,094 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:44,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 2293 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:44,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:44,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:44,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:50,875 INFO L129 PetriNetUnfolder]: 4203/43947 cut-off events. [2022-01-19 07:21:50,875 INFO L130 PetriNetUnfolder]: For 74629/75138 co-relation queries the response was YES. [2022-01-19 07:21:51,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92564 conditions, 43947 events. 4203/43947 cut-off events. For 74629/75138 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 733114 event pairs, 1027 based on Foata normal form. 40/41474 useless extension candidates. Maximal degree in co-relation 92486. Up to 2498 conditions per place. [2022-01-19 07:21:51,518 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 84 selfloop transitions, 38 changer transitions 0/456 dead transitions. [2022-01-19 07:21:51,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 456 transitions, 2873 flow [2022-01-19 07:21:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:21:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:21:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1563 transitions. [2022-01-19 07:21:51,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194117647058824 [2022-01-19 07:21:51,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1563 transitions. [2022-01-19 07:21:51,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1563 transitions. [2022-01-19 07:21:51,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:21:51,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1563 transitions. [2022-01-19 07:21:51,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.6) internal successors, (1563), 5 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:51,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:51,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:51,522 INFO L186 Difference]: Start difference. First operand has 446 places, 419 transitions, 2293 flow. Second operand 5 states and 1563 transitions. [2022-01-19 07:21:51,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 456 transitions, 2873 flow [2022-01-19 07:21:53,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 456 transitions, 2849 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 07:21:53,536 INFO L242 Difference]: Finished difference. Result has 449 places, 424 transitions, 2466 flow [2022-01-19 07:21:53,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2466, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-01-19 07:21:53,536 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 148 predicate places. [2022-01-19 07:21:53,536 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 2466 flow [2022-01-19 07:21:53,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:53,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:21:53,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:21:53,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 07:21:53,537 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:21:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:21:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash -980895135, now seen corresponding path program 3 times [2022-01-19 07:21:53,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:21:53,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767365053] [2022-01-19 07:21:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:21:53,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:21:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:21:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:21:53,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:21:53,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767365053] [2022-01-19 07:21:53,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767365053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:21:53,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:21:53,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:21:53,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143442171] [2022-01-19 07:21:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:21:53,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:21:53,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:21:53,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:21:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:21:53,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:21:53,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 2466 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:21:53,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:21:53,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:21:53,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:21:59,963 INFO L129 PetriNetUnfolder]: 4204/43912 cut-off events. [2022-01-19 07:21:59,963 INFO L130 PetriNetUnfolder]: For 84579/85223 co-relation queries the response was YES. [2022-01-19 07:22:00,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91300 conditions, 43912 events. 4204/43912 cut-off events. For 84579/85223 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 732708 event pairs, 1273 based on Foata normal form. 40/41338 useless extension candidates. Maximal degree in co-relation 91220. Up to 4034 conditions per place. [2022-01-19 07:22:00,835 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 75 selfloop transitions, 41 changer transitions 0/450 dead transitions. [2022-01-19 07:22:00,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 450 transitions, 2944 flow [2022-01-19 07:22:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:22:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:22:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 07:22:00,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 07:22:00,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 07:22:00,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 07:22:00,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:00,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 07:22:00,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:00,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:00,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:00,840 INFO L186 Difference]: Start difference. First operand has 449 places, 424 transitions, 2466 flow. Second operand 5 states and 1558 transitions. [2022-01-19 07:22:00,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 450 transitions, 2944 flow [2022-01-19 07:22:02,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 450 transitions, 2924 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 07:22:02,122 INFO L242 Difference]: Finished difference. Result has 456 places, 434 transitions, 2763 flow [2022-01-19 07:22:02,123 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2763, PETRI_PLACES=456, PETRI_TRANSITIONS=434} [2022-01-19 07:22:02,123 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 155 predicate places. [2022-01-19 07:22:02,123 INFO L470 AbstractCegarLoop]: Abstraction has has 456 places, 434 transitions, 2763 flow [2022-01-19 07:22:02,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:02,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:02,124 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:22:02,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 07:22:02,124 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:22:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 493838365, now seen corresponding path program 1 times [2022-01-19 07:22:02,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:02,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535847214] [2022-01-19 07:22:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:02,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:22:02,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535847214] [2022-01-19 07:22:02,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535847214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:02,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:02,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:22:02,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959373739] [2022-01-19 07:22:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:02,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:22:02,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:22:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:22:02,165 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:22:02,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 434 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:02,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:02,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:22:02,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:08,922 INFO L129 PetriNetUnfolder]: 4220/44659 cut-off events. [2022-01-19 07:22:08,923 INFO L130 PetriNetUnfolder]: For 93155/93678 co-relation queries the response was YES. [2022-01-19 07:22:09,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92956 conditions, 44659 events. 4220/44659 cut-off events. For 93155/93678 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 741503 event pairs, 1283 based on Foata normal form. 75/41959 useless extension candidates. Maximal degree in co-relation 92873. Up to 4126 conditions per place. [2022-01-19 07:22:09,705 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 71 selfloop transitions, 42 changer transitions 0/447 dead transitions. [2022-01-19 07:22:09,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 447 transitions, 3083 flow [2022-01-19 07:22:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:22:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:22:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-01-19 07:22:09,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9135294117647059 [2022-01-19 07:22:09,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-01-19 07:22:09,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-01-19 07:22:09,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:09,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-01-19 07:22:09,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:09,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:09,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:09,709 INFO L186 Difference]: Start difference. First operand has 456 places, 434 transitions, 2763 flow. Second operand 5 states and 1553 transitions. [2022-01-19 07:22:09,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 447 transitions, 3083 flow [2022-01-19 07:22:11,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 447 transitions, 3074 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 07:22:11,106 INFO L242 Difference]: Finished difference. Result has 461 places, 435 transitions, 2922 flow [2022-01-19 07:22:11,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2922, PETRI_PLACES=461, PETRI_TRANSITIONS=435} [2022-01-19 07:22:11,106 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 160 predicate places. [2022-01-19 07:22:11,106 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 435 transitions, 2922 flow [2022-01-19 07:22:11,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:11,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:11,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:22:11,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 07:22:11,107 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:22:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1946973185, now seen corresponding path program 1 times [2022-01-19 07:22:11,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:11,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037313114] [2022-01-19 07:22:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:11,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:22:11,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:11,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037313114] [2022-01-19 07:22:11,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037313114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:11,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:11,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:22:11,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963678925] [2022-01-19 07:22:11,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:11,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:22:11,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:22:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:22:11,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:22:11,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 435 transitions, 2922 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:11,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:11,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:22:11,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:22,543 INFO L129 PetriNetUnfolder]: 13992/62094 cut-off events. [2022-01-19 07:22:22,543 INFO L130 PetriNetUnfolder]: For 116145/118738 co-relation queries the response was YES. [2022-01-19 07:22:23,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147614 conditions, 62094 events. 13992/62094 cut-off events. For 116145/118738 co-relation queries the response was YES. Maximal size of possible extension queue 4333. Compared 1019886 event pairs, 9560 based on Foata normal form. 58/55992 useless extension candidates. Maximal degree in co-relation 147529. Up to 27114 conditions per place. [2022-01-19 07:22:23,847 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 128 selfloop transitions, 12 changer transitions 17/505 dead transitions. [2022-01-19 07:22:23,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 505 transitions, 3561 flow [2022-01-19 07:22:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 07:22:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 07:22:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 07:22:23,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 07:22:23,849 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 07:22:23,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 07:22:23,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:23,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 07:22:23,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:23,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:23,854 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:23,854 INFO L186 Difference]: Start difference. First operand has 461 places, 435 transitions, 2922 flow. Second operand 13 states and 3558 transitions. [2022-01-19 07:22:23,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 505 transitions, 3561 flow [2022-01-19 07:22:26,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 505 transitions, 3529 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 07:22:26,317 INFO L242 Difference]: Finished difference. Result has 481 places, 444 transitions, 2983 flow [2022-01-19 07:22:26,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2983, PETRI_PLACES=481, PETRI_TRANSITIONS=444} [2022-01-19 07:22:26,318 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 180 predicate places. [2022-01-19 07:22:26,318 INFO L470 AbstractCegarLoop]: Abstraction has has 481 places, 444 transitions, 2983 flow [2022-01-19 07:22:26,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:26,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:26,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:22:26,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 07:22:26,318 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:22:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash -594822665, now seen corresponding path program 3 times [2022-01-19 07:22:26,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:26,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849496395] [2022-01-19 07:22:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:26,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:22:26,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849496395] [2022-01-19 07:22:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849496395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:26,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:26,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:22:26,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096968315] [2022-01-19 07:22:26,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:22:26,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:22:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:22:26,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:22:26,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 444 transitions, 2983 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:26,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:26,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:22:26,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:38,977 INFO L129 PetriNetUnfolder]: 15799/67182 cut-off events. [2022-01-19 07:22:38,978 INFO L130 PetriNetUnfolder]: For 139802/142351 co-relation queries the response was YES. [2022-01-19 07:22:40,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173082 conditions, 67182 events. 15799/67182 cut-off events. For 139802/142351 co-relation queries the response was YES. Maximal size of possible extension queue 5003. Compared 1110702 event pairs, 8319 based on Foata normal form. 150/60773 useless extension candidates. Maximal degree in co-relation 172987. Up to 25779 conditions per place. [2022-01-19 07:22:40,797 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 101 selfloop transitions, 23 changer transitions 14/486 dead transitions. [2022-01-19 07:22:40,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 486 transitions, 3521 flow [2022-01-19 07:22:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:22:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:22:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 07:22:40,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 07:22:40,799 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 07:22:40,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 07:22:40,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:40,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 07:22:40,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:40,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:40,804 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:40,804 INFO L186 Difference]: Start difference. First operand has 481 places, 444 transitions, 2983 flow. Second operand 12 states and 3274 transitions. [2022-01-19 07:22:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 486 transitions, 3521 flow [2022-01-19 07:22:44,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 486 transitions, 3459 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-01-19 07:22:44,929 INFO L242 Difference]: Finished difference. Result has 490 places, 457 transitions, 3144 flow [2022-01-19 07:22:44,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3144, PETRI_PLACES=490, PETRI_TRANSITIONS=457} [2022-01-19 07:22:44,930 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 189 predicate places. [2022-01-19 07:22:44,930 INFO L470 AbstractCegarLoop]: Abstraction has has 490 places, 457 transitions, 3144 flow [2022-01-19 07:22:44,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:44,931 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:22:44,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:22:44,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 07:22:44,931 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:22:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:22:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1327646175, now seen corresponding path program 4 times [2022-01-19 07:22:44,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:22:44,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127762321] [2022-01-19 07:22:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:22:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:22:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:22:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:22:45,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:22:45,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127762321] [2022-01-19 07:22:45,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127762321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:22:45,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:22:45,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:22:45,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155153244] [2022-01-19 07:22:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:22:45,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:22:45,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:22:45,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:22:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:22:45,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:22:45,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 457 transitions, 3144 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:45,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:22:45,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:22:45,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:22:58,084 INFO L129 PetriNetUnfolder]: 16222/70970 cut-off events. [2022-01-19 07:22:58,084 INFO L130 PetriNetUnfolder]: For 175366/178177 co-relation queries the response was YES. [2022-01-19 07:22:59,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191137 conditions, 70970 events. 16222/70970 cut-off events. For 175366/178177 co-relation queries the response was YES. Maximal size of possible extension queue 5304. Compared 1189590 event pairs, 7691 based on Foata normal form. 155/64572 useless extension candidates. Maximal degree in co-relation 191039. Up to 26467 conditions per place. [2022-01-19 07:22:59,673 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 104 selfloop transitions, 29 changer transitions 13/494 dead transitions. [2022-01-19 07:22:59,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 494 transitions, 3670 flow [2022-01-19 07:22:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:22:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:22:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 07:22:59,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 07:22:59,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 07:22:59,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 07:22:59,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:22:59,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 07:22:59,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:59,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:59,679 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:22:59,679 INFO L186 Difference]: Start difference. First operand has 490 places, 457 transitions, 3144 flow. Second operand 11 states and 3007 transitions. [2022-01-19 07:22:59,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 494 transitions, 3670 flow [2022-01-19 07:23:07,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 494 transitions, 3602 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-01-19 07:23:07,264 INFO L242 Difference]: Finished difference. Result has 504 places, 467 transitions, 3309 flow [2022-01-19 07:23:07,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=504, PETRI_TRANSITIONS=467} [2022-01-19 07:23:07,265 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 203 predicate places. [2022-01-19 07:23:07,265 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 467 transitions, 3309 flow [2022-01-19 07:23:07,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:07,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:07,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:23:07,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 07:23:07,266 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:23:07,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1832784447, now seen corresponding path program 5 times [2022-01-19 07:23:07,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080120324] [2022-01-19 07:23:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:07,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:23:07,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:07,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080120324] [2022-01-19 07:23:07,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080120324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:07,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:07,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:23:07,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048207843] [2022-01-19 07:23:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:07,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:23:07,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:23:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:23:07,325 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:23:07,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 467 transitions, 3309 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:07,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:07,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:23:07,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:22,642 INFO L129 PetriNetUnfolder]: 16447/72177 cut-off events. [2022-01-19 07:23:22,642 INFO L130 PetriNetUnfolder]: For 216342/219358 co-relation queries the response was YES. [2022-01-19 07:23:24,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206725 conditions, 72177 events. 16447/72177 cut-off events. For 216342/219358 co-relation queries the response was YES. Maximal size of possible extension queue 5487. Compared 1219607 event pairs, 8724 based on Foata normal form. 169/65113 useless extension candidates. Maximal degree in co-relation 206620. Up to 28965 conditions per place. [2022-01-19 07:23:24,409 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 28 changer transitions 15/497 dead transitions. [2022-01-19 07:23:24,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 497 transitions, 3794 flow [2022-01-19 07:23:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:23:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:23:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 07:23:24,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 07:23:24,412 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 07:23:24,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 07:23:24,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:24,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 07:23:24,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:24,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:24,416 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:24,416 INFO L186 Difference]: Start difference. First operand has 504 places, 467 transitions, 3309 flow. Second operand 11 states and 3005 transitions. [2022-01-19 07:23:24,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 497 transitions, 3794 flow [2022-01-19 07:23:31,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 497 transitions, 3724 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-01-19 07:23:31,542 INFO L242 Difference]: Finished difference. Result has 515 places, 472 transitions, 3394 flow [2022-01-19 07:23:31,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=515, PETRI_TRANSITIONS=472} [2022-01-19 07:23:31,543 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 214 predicate places. [2022-01-19 07:23:31,543 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 472 transitions, 3394 flow [2022-01-19 07:23:31,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:31,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:31,543 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:23:31,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 07:23:31,543 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:23:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1405731671, now seen corresponding path program 6 times [2022-01-19 07:23:31,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:31,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089167200] [2022-01-19 07:23:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:31,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:23:31,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:31,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089167200] [2022-01-19 07:23:31,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089167200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:31,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:31,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:23:31,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698778564] [2022-01-19 07:23:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:31,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:23:31,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:31,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:23:31,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:23:31,612 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:23:31,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 472 transitions, 3394 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:31,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:31,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:23:31,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:23:46,561 INFO L129 PetriNetUnfolder]: 16463/72715 cut-off events. [2022-01-19 07:23:46,561 INFO L130 PetriNetUnfolder]: For 226443/229507 co-relation queries the response was YES. [2022-01-19 07:23:48,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207868 conditions, 72715 events. 16463/72715 cut-off events. For 226443/229507 co-relation queries the response was YES. Maximal size of possible extension queue 5490. Compared 1231241 event pairs, 7863 based on Foata normal form. 196/66161 useless extension candidates. Maximal degree in co-relation 207759. Up to 26636 conditions per place. [2022-01-19 07:23:48,727 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 32 changer transitions 19/503 dead transitions. [2022-01-19 07:23:48,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 503 transitions, 3890 flow [2022-01-19 07:23:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:23:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:23:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 07:23:48,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 07:23:48,729 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 07:23:48,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 07:23:48,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:23:48,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 07:23:48,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:48,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:48,733 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:48,733 INFO L186 Difference]: Start difference. First operand has 515 places, 472 transitions, 3394 flow. Second operand 12 states and 3273 transitions. [2022-01-19 07:23:48,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 503 transitions, 3890 flow [2022-01-19 07:23:56,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 503 transitions, 3815 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-01-19 07:23:56,157 INFO L242 Difference]: Finished difference. Result has 526 places, 476 transitions, 3448 flow [2022-01-19 07:23:56,157 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3448, PETRI_PLACES=526, PETRI_TRANSITIONS=476} [2022-01-19 07:23:56,158 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 225 predicate places. [2022-01-19 07:23:56,158 INFO L470 AbstractCegarLoop]: Abstraction has has 526 places, 476 transitions, 3448 flow [2022-01-19 07:23:56,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:56,158 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:23:56,158 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:23:56,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 07:23:56,158 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:23:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:23:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1508317059, now seen corresponding path program 2 times [2022-01-19 07:23:56,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:23:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582392395] [2022-01-19 07:23:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:23:56,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:23:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:23:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:23:56,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:23:56,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582392395] [2022-01-19 07:23:56,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582392395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:23:56,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:23:56,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:23:56,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856986706] [2022-01-19 07:23:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:23:56,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:23:56,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:23:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:23:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:23:56,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:23:56,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 476 transitions, 3448 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:23:56,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:23:56,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:23:56,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:10,488 INFO L129 PetriNetUnfolder]: 15136/68502 cut-off events. [2022-01-19 07:24:10,488 INFO L130 PetriNetUnfolder]: For 220957/224166 co-relation queries the response was YES. [2022-01-19 07:24:12,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194271 conditions, 68502 events. 15136/68502 cut-off events. For 220957/224166 co-relation queries the response was YES. Maximal size of possible extension queue 5059. Compared 1154324 event pairs, 10510 based on Foata normal form. 75/61737 useless extension candidates. Maximal degree in co-relation 194158. Up to 33083 conditions per place. [2022-01-19 07:24:12,340 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 139 selfloop transitions, 19 changer transitions 14/518 dead transitions. [2022-01-19 07:24:12,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 518 transitions, 4044 flow [2022-01-19 07:24:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:24:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:24:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 07:24:12,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 07:24:12,343 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 07:24:12,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 07:24:12,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:12,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 07:24:12,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:12,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:12,347 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:12,347 INFO L186 Difference]: Start difference. First operand has 526 places, 476 transitions, 3448 flow. Second operand 12 states and 3274 transitions. [2022-01-19 07:24:12,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 518 transitions, 4044 flow [2022-01-19 07:24:18,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 518 transitions, 3976 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-01-19 07:24:18,602 INFO L242 Difference]: Finished difference. Result has 538 places, 489 transitions, 3552 flow [2022-01-19 07:24:18,602 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3552, PETRI_PLACES=538, PETRI_TRANSITIONS=489} [2022-01-19 07:24:18,602 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 237 predicate places. [2022-01-19 07:24:18,602 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 489 transitions, 3552 flow [2022-01-19 07:24:18,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:18,603 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:18,603 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:24:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 07:24:18,603 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:24:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1942609535, now seen corresponding path program 3 times [2022-01-19 07:24:18,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:18,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305907349] [2022-01-19 07:24:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:18,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:24:18,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:18,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305907349] [2022-01-19 07:24:18,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305907349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:18,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:18,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:24:18,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675693637] [2022-01-19 07:24:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:18,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:24:18,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:24:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:24:18,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:24:18,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 489 transitions, 3552 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:18,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:18,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:24:18,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:33,166 INFO L129 PetriNetUnfolder]: 15148/68517 cut-off events. [2022-01-19 07:24:33,167 INFO L130 PetriNetUnfolder]: For 212710/216069 co-relation queries the response was YES. [2022-01-19 07:24:35,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194675 conditions, 68517 events. 15148/68517 cut-off events. For 212710/216069 co-relation queries the response was YES. Maximal size of possible extension queue 5048. Compared 1154140 event pairs, 10366 based on Foata normal form. 95/61908 useless extension candidates. Maximal degree in co-relation 194557. Up to 33299 conditions per place. [2022-01-19 07:24:35,248 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 137 selfloop transitions, 21 changer transitions 15/519 dead transitions. [2022-01-19 07:24:35,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 519 transitions, 4090 flow [2022-01-19 07:24:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:24:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:24:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 07:24:35,250 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 07:24:35,251 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 07:24:35,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 07:24:35,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:35,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 07:24:35,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:35,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:35,254 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:35,254 INFO L186 Difference]: Start difference. First operand has 538 places, 489 transitions, 3552 flow. Second operand 11 states and 3005 transitions. [2022-01-19 07:24:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 519 transitions, 4090 flow [2022-01-19 07:24:40,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 519 transitions, 4036 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-01-19 07:24:40,594 INFO L242 Difference]: Finished difference. Result has 550 places, 494 transitions, 3619 flow [2022-01-19 07:24:40,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3619, PETRI_PLACES=550, PETRI_TRANSITIONS=494} [2022-01-19 07:24:40,595 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 249 predicate places. [2022-01-19 07:24:40,595 INFO L470 AbstractCegarLoop]: Abstraction has has 550 places, 494 transitions, 3619 flow [2022-01-19 07:24:40,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:40,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:24:40,595 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:24:40,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 07:24:40,596 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:24:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:24:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1480323245, now seen corresponding path program 4 times [2022-01-19 07:24:40,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:24:40,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211773533] [2022-01-19 07:24:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:24:40,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:24:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:24:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:24:40,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:24:40,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211773533] [2022-01-19 07:24:40,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211773533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:24:40,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:24:40,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:24:40,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388163879] [2022-01-19 07:24:40,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:24:40,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:24:40,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:24:40,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:24:40,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:24:40,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:24:40,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 494 transitions, 3619 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:40,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:24:40,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:24:40,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:24:55,929 INFO L129 PetriNetUnfolder]: 15155/67928 cut-off events. [2022-01-19 07:24:55,929 INFO L130 PetriNetUnfolder]: For 219582/222711 co-relation queries the response was YES. [2022-01-19 07:24:57,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196218 conditions, 67928 events. 15155/67928 cut-off events. For 219582/222711 co-relation queries the response was YES. Maximal size of possible extension queue 5102. Compared 1142639 event pairs, 10383 based on Foata normal form. 31/61203 useless extension candidates. Maximal degree in co-relation 196095. Up to 33552 conditions per place. [2022-01-19 07:24:58,076 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 23 changer transitions 13/531 dead transitions. [2022-01-19 07:24:58,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 531 transitions, 4229 flow [2022-01-19 07:24:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 07:24:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 07:24:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 07:24:58,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 07:24:58,078 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 07:24:58,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 07:24:58,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:24:58,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 07:24:58,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,082 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:24:58,082 INFO L186 Difference]: Start difference. First operand has 550 places, 494 transitions, 3619 flow. Second operand 11 states and 3007 transitions. [2022-01-19 07:24:58,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 531 transitions, 4229 flow [2022-01-19 07:25:03,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 531 transitions, 4195 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-01-19 07:25:03,703 INFO L242 Difference]: Finished difference. Result has 563 places, 504 transitions, 3772 flow [2022-01-19 07:25:03,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3772, PETRI_PLACES=563, PETRI_TRANSITIONS=504} [2022-01-19 07:25:03,703 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 262 predicate places. [2022-01-19 07:25:03,703 INFO L470 AbstractCegarLoop]: Abstraction has has 563 places, 504 transitions, 3772 flow [2022-01-19 07:25:03,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:03,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:03,704 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:03,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 07:25:03,704 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:25:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1988714171, now seen corresponding path program 5 times [2022-01-19 07:25:03,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:03,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667839020] [2022-01-19 07:25:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:03,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:25:03,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667839020] [2022-01-19 07:25:03,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667839020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:25:03,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:25:03,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:25:03,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412326861] [2022-01-19 07:25:03,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:25:03,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:25:03,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:25:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:25:03,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:25:03,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 504 transitions, 3772 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:03,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:03,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:25:03,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:18,871 INFO L129 PetriNetUnfolder]: 15189/68963 cut-off events. [2022-01-19 07:25:18,871 INFO L130 PetriNetUnfolder]: For 240216/243385 co-relation queries the response was YES. [2022-01-19 07:25:20,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202261 conditions, 68963 events. 15189/68963 cut-off events. For 240216/243385 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 1163893 event pairs, 9767 based on Foata normal form. 35/62389 useless extension candidates. Maximal degree in co-relation 202132. Up to 31189 conditions per place. [2022-01-19 07:25:21,129 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 170 selfloop transitions, 34 changer transitions 16/566 dead transitions. [2022-01-19 07:25:21,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 566 transitions, 4641 flow [2022-01-19 07:25:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 07:25:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 07:25:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 07:25:21,132 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 07:25:21,132 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 07:25:21,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 07:25:21,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:21,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 07:25:21,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:21,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:21,136 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:21,136 INFO L186 Difference]: Start difference. First operand has 563 places, 504 transitions, 3772 flow. Second operand 13 states and 3556 transitions. [2022-01-19 07:25:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 566 transitions, 4641 flow [2022-01-19 07:25:27,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 566 transitions, 4537 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-01-19 07:25:27,309 INFO L242 Difference]: Finished difference. Result has 578 places, 513 transitions, 3907 flow [2022-01-19 07:25:27,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3907, PETRI_PLACES=578, PETRI_TRANSITIONS=513} [2022-01-19 07:25:27,310 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 277 predicate places. [2022-01-19 07:25:27,310 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 513 transitions, 3907 flow [2022-01-19 07:25:27,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:27,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:27,310 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:27,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 07:25:27,311 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:25:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:27,311 INFO L85 PathProgramCache]: Analyzing trace with hash 303934179, now seen corresponding path program 2 times [2022-01-19 07:25:27,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:27,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121860310] [2022-01-19 07:25:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:27,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:25:27,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:27,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121860310] [2022-01-19 07:25:27,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121860310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:25:27,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:25:27,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:25:27,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413639534] [2022-01-19 07:25:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:25:27,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:25:27,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:25:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:25:27,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:25:27,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 513 transitions, 3907 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:27,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:27,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:25:27,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:37,080 INFO L129 PetriNetUnfolder]: 4723/50263 cut-off events. [2022-01-19 07:25:37,080 INFO L130 PetriNetUnfolder]: For 190514/192381 co-relation queries the response was YES. [2022-01-19 07:25:38,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132187 conditions, 50263 events. 4723/50263 cut-off events. For 190514/192381 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 860715 event pairs, 910 based on Foata normal form. 88/48005 useless extension candidates. Maximal degree in co-relation 132052. Up to 4458 conditions per place. [2022-01-19 07:25:38,777 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 79 selfloop transitions, 38 changer transitions 2/533 dead transitions. [2022-01-19 07:25:38,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 533 transitions, 4300 flow [2022-01-19 07:25:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:25:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:25:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 07:25:38,778 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 07:25:38,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 07:25:38,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 07:25:38,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:38,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 07:25:38,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:38,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:38,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:38,780 INFO L186 Difference]: Start difference. First operand has 578 places, 513 transitions, 3907 flow. Second operand 5 states and 1558 transitions. [2022-01-19 07:25:38,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 533 transitions, 4300 flow [2022-01-19 07:25:42,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 533 transitions, 4175 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-01-19 07:25:42,372 INFO L242 Difference]: Finished difference. Result has 575 places, 515 transitions, 3914 flow [2022-01-19 07:25:42,373 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3914, PETRI_PLACES=575, PETRI_TRANSITIONS=515} [2022-01-19 07:25:42,373 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 07:25:42,373 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 515 transitions, 3914 flow [2022-01-19 07:25:42,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:42,373 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:42,373 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:42,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 07:25:42,374 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:25:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 835775517, now seen corresponding path program 4 times [2022-01-19 07:25:42,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:42,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933676532] [2022-01-19 07:25:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:42,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:25:42,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:42,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933676532] [2022-01-19 07:25:42,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933676532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:25:42,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:25:42,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:25:42,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868849521] [2022-01-19 07:25:42,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:25:42,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:25:42,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:42,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:25:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:25:42,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:25:42,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 515 transitions, 3914 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:42,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:42,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:25:42,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:25:52,467 INFO L129 PetriNetUnfolder]: 5006/53708 cut-off events. [2022-01-19 07:25:52,467 INFO L130 PetriNetUnfolder]: For 195305/196991 co-relation queries the response was YES. [2022-01-19 07:25:54,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136941 conditions, 53708 events. 5006/53708 cut-off events. For 195305/196991 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 922517 event pairs, 888 based on Foata normal form. 152/51487 useless extension candidates. Maximal degree in co-relation 136807. Up to 3123 conditions per place. [2022-01-19 07:25:54,201 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 119 selfloop transitions, 24 changer transitions 0/557 dead transitions. [2022-01-19 07:25:54,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 557 transitions, 4767 flow [2022-01-19 07:25:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:25:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:25:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 07:25:54,203 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 07:25:54,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 07:25:54,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 07:25:54,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:25:54,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 07:25:54,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:54,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:54,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:54,205 INFO L186 Difference]: Start difference. First operand has 575 places, 515 transitions, 3914 flow. Second operand 5 states and 1556 transitions. [2022-01-19 07:25:54,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 557 transitions, 4767 flow [2022-01-19 07:25:57,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 557 transitions, 4739 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 07:25:57,765 INFO L242 Difference]: Finished difference. Result has 580 places, 523 transitions, 4194 flow [2022-01-19 07:25:57,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4194, PETRI_PLACES=580, PETRI_TRANSITIONS=523} [2022-01-19 07:25:57,766 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 07:25:57,766 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 523 transitions, 4194 flow [2022-01-19 07:25:57,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:57,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:25:57,766 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:25:57,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 07:25:57,766 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:25:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:25:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1897944631, now seen corresponding path program 5 times [2022-01-19 07:25:57,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:25:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281917442] [2022-01-19 07:25:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:25:57,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:25:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:25:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:25:57,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:25:57,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281917442] [2022-01-19 07:25:57,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281917442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:25:57,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:25:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:25:57,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244184958] [2022-01-19 07:25:57,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:25:57,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:25:57,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:25:57,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:25:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:25:57,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:25:57,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 523 transitions, 4194 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:25:57,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:25:57,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:25:57,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:26:07,330 INFO L129 PetriNetUnfolder]: 4805/50484 cut-off events. [2022-01-19 07:26:07,330 INFO L130 PetriNetUnfolder]: For 193667/194999 co-relation queries the response was YES. [2022-01-19 07:26:09,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133262 conditions, 50484 events. 4805/50484 cut-off events. For 193667/194999 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 861741 event pairs, 840 based on Foata normal form. 33/48467 useless extension candidates. Maximal degree in co-relation 133126. Up to 3111 conditions per place. [2022-01-19 07:26:09,206 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 101 selfloop transitions, 30 changer transitions 0/545 dead transitions. [2022-01-19 07:26:09,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 545 transitions, 4608 flow [2022-01-19 07:26:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:26:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:26:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 07:26:09,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 07:26:09,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 07:26:09,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 07:26:09,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:26:09,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 07:26:09,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:09,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:09,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:09,211 INFO L186 Difference]: Start difference. First operand has 580 places, 523 transitions, 4194 flow. Second operand 5 states and 1558 transitions. [2022-01-19 07:26:09,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 545 transitions, 4608 flow [2022-01-19 07:26:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 545 transitions, 4605 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:26:13,038 INFO L242 Difference]: Finished difference. Result has 583 places, 522 transitions, 4232 flow [2022-01-19 07:26:13,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4232, PETRI_PLACES=583, PETRI_TRANSITIONS=522} [2022-01-19 07:26:13,039 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 07:26:13,039 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 522 transitions, 4232 flow [2022-01-19 07:26:13,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:13,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:26:13,039 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:26:13,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 07:26:13,039 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:26:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:26:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash 664043035, now seen corresponding path program 6 times [2022-01-19 07:26:13,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:26:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163647733] [2022-01-19 07:26:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:26:13,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:26:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:26:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:26:13,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:26:13,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163647733] [2022-01-19 07:26:13,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163647733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:26:13,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:26:13,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 07:26:13,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489718892] [2022-01-19 07:26:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:26:13,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:26:13,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:26:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:26:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:26:13,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 07:26:13,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 522 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:13,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:26:13,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 07:26:13,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:26:28,229 INFO L129 PetriNetUnfolder]: 14405/65559 cut-off events. [2022-01-19 07:26:28,229 INFO L130 PetriNetUnfolder]: For 224384/227352 co-relation queries the response was YES. [2022-01-19 07:26:30,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188133 conditions, 65559 events. 14405/65559 cut-off events. For 224384/227352 co-relation queries the response was YES. Maximal size of possible extension queue 4786. Compared 1097036 event pairs, 9884 based on Foata normal form. 35/59181 useless extension candidates. Maximal degree in co-relation 187997. Up to 31639 conditions per place. [2022-01-19 07:26:30,528 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 32 changer transitions 17/553 dead transitions. [2022-01-19 07:26:30,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 553 transitions, 4833 flow [2022-01-19 07:26:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 07:26:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 07:26:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 07:26:30,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 07:26:30,531 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 07:26:30,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 07:26:30,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:26:30,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 07:26:30,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:30,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:30,535 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:30,535 INFO L186 Difference]: Start difference. First operand has 583 places, 522 transitions, 4232 flow. Second operand 12 states and 3273 transitions. [2022-01-19 07:26:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 553 transitions, 4833 flow [2022-01-19 07:26:35,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 553 transitions, 4792 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:26:35,673 INFO L242 Difference]: Finished difference. Result has 598 places, 528 transitions, 4366 flow [2022-01-19 07:26:35,674 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4366, PETRI_PLACES=598, PETRI_TRANSITIONS=528} [2022-01-19 07:26:35,674 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 297 predicate places. [2022-01-19 07:26:35,674 INFO L470 AbstractCegarLoop]: Abstraction has has 598 places, 528 transitions, 4366 flow [2022-01-19 07:26:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:35,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:26:35,675 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:26:35,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 07:26:35,675 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:26:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:26:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1339106453, now seen corresponding path program 4 times [2022-01-19 07:26:35,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:26:35,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767448350] [2022-01-19 07:26:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:26:35,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:26:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:26:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:26:36,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:26:36,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767448350] [2022-01-19 07:26:36,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767448350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:26:36,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:26:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-19 07:26:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506062186] [2022-01-19 07:26:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:26:36,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 07:26:36,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:26:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 07:26:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-19 07:26:36,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 07:26:36,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 528 transitions, 4366 flow. Second operand has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:26:36,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:26:36,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 07:26:36,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:27:05,840 INFO L129 PetriNetUnfolder]: 27696/133496 cut-off events. [2022-01-19 07:27:05,840 INFO L130 PetriNetUnfolder]: For 372099/381897 co-relation queries the response was YES. [2022-01-19 07:27:10,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303651 conditions, 133496 events. 27696/133496 cut-off events. For 372099/381897 co-relation queries the response was YES. Maximal size of possible extension queue 5258. Compared 2385663 event pairs, 15053 based on Foata normal form. 2620/121014 useless extension candidates. Maximal degree in co-relation 303509. Up to 9489 conditions per place. [2022-01-19 07:27:10,994 INFO L132 encePairwiseOnDemand]: 300/340 looper letters, 399 selfloop transitions, 45 changer transitions 72/863 dead transitions. [2022-01-19 07:27:10,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 863 transitions, 7511 flow [2022-01-19 07:27:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 07:27:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 07:27:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10223 transitions. [2022-01-19 07:27:11,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683355614973262 [2022-01-19 07:27:11,000 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10223 transitions. [2022-01-19 07:27:11,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10223 transitions. [2022-01-19 07:27:11,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:27:11,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10223 transitions. [2022-01-19 07:27:11,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 232.3409090909091) internal successors, (10223), 44 states have internal predecessors, (10223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:11,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:11,015 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:11,015 INFO L186 Difference]: Start difference. First operand has 598 places, 528 transitions, 4366 flow. Second operand 44 states and 10223 transitions. [2022-01-19 07:27:11,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 863 transitions, 7511 flow [2022-01-19 07:27:18,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 863 transitions, 7337 flow, removed 74 selfloop flow, removed 4 redundant places. [2022-01-19 07:27:18,060 INFO L242 Difference]: Finished difference. Result has 644 places, 502 transitions, 4142 flow [2022-01-19 07:27:18,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4142, PETRI_PLACES=644, PETRI_TRANSITIONS=502} [2022-01-19 07:27:18,061 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 343 predicate places. [2022-01-19 07:27:18,061 INFO L470 AbstractCegarLoop]: Abstraction has has 644 places, 502 transitions, 4142 flow [2022-01-19 07:27:18,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:18,062 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:27:18,062 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:27:18,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 07:27:18,062 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:27:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:27:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash -389523893, now seen corresponding path program 6 times [2022-01-19 07:27:18,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:27:18,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898130645] [2022-01-19 07:27:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:27:18,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:27:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:27:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:27:18,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:27:18,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898130645] [2022-01-19 07:27:18,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898130645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:27:18,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:27:18,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:27:18,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462773203] [2022-01-19 07:27:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:27:18,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:27:18,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:27:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:27:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:27:18,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:27:18,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 502 transitions, 4142 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:18,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:27:18,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:27:18,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:27:26,681 INFO L129 PetriNetUnfolder]: 3917/39289 cut-off events. [2022-01-19 07:27:26,681 INFO L130 PetriNetUnfolder]: For 189914/192157 co-relation queries the response was YES. [2022-01-19 07:27:27,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110899 conditions, 39289 events. 3917/39289 cut-off events. For 189914/192157 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 635266 event pairs, 689 based on Foata normal form. 45/37277 useless extension candidates. Maximal degree in co-relation 110750. Up to 1967 conditions per place. [2022-01-19 07:27:27,972 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 31 changer transitions 2/534 dead transitions. [2022-01-19 07:27:27,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 534 transitions, 4844 flow [2022-01-19 07:27:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:27:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:27:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 07:27:27,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 07:27:27,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 07:27:27,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 07:27:27,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:27:27,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 07:27:27,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:27,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:27,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:27,975 INFO L186 Difference]: Start difference. First operand has 644 places, 502 transitions, 4142 flow. Second operand 5 states and 1556 transitions. [2022-01-19 07:27:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 534 transitions, 4844 flow [2022-01-19 07:27:30,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 534 transitions, 4708 flow, removed 17 selfloop flow, removed 53 redundant places. [2022-01-19 07:27:30,400 INFO L242 Difference]: Finished difference. Result has 575 places, 505 transitions, 4201 flow [2022-01-19 07:27:30,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4201, PETRI_PLACES=575, PETRI_TRANSITIONS=505} [2022-01-19 07:27:30,401 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 07:27:30,401 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 505 transitions, 4201 flow [2022-01-19 07:27:30,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:30,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:27:30,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:27:30,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 07:27:30,401 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:27:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:27:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash -148283951, now seen corresponding path program 4 times [2022-01-19 07:27:30,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:27:30,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741467313] [2022-01-19 07:27:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:27:30,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:27:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:27:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:27:30,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:27:30,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741467313] [2022-01-19 07:27:30,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741467313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:27:30,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:27:30,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:27:30,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887441689] [2022-01-19 07:27:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:27:30,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:27:30,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:27:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:27:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:27:30,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:27:30,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 505 transitions, 4201 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:30,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:27:30,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:27:30,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:27:37,924 INFO L129 PetriNetUnfolder]: 3849/38733 cut-off events. [2022-01-19 07:27:37,924 INFO L130 PetriNetUnfolder]: For 160208/161577 co-relation queries the response was YES. [2022-01-19 07:27:39,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99295 conditions, 38733 events. 3849/38733 cut-off events. For 160208/161577 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 626071 event pairs, 571 based on Foata normal form. 194/36928 useless extension candidates. Maximal degree in co-relation 99160. Up to 2083 conditions per place. [2022-01-19 07:27:39,147 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 40 changer transitions 2/525 dead transitions. [2022-01-19 07:27:39,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 525 transitions, 4514 flow [2022-01-19 07:27:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:27:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:27:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2022-01-19 07:27:39,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 07:27:39,148 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2022-01-19 07:27:39,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2022-01-19 07:27:39,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:27:39,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2022-01-19 07:27:39,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:39,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:39,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:39,154 INFO L186 Difference]: Start difference. First operand has 575 places, 505 transitions, 4201 flow. Second operand 5 states and 1560 transitions. [2022-01-19 07:27:39,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 525 transitions, 4514 flow [2022-01-19 07:27:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 525 transitions, 4405 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 07:27:40,822 INFO L242 Difference]: Finished difference. Result has 576 places, 502 transitions, 4079 flow [2022-01-19 07:27:40,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4079, PETRI_PLACES=576, PETRI_TRANSITIONS=502} [2022-01-19 07:27:40,823 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 275 predicate places. [2022-01-19 07:27:40,823 INFO L470 AbstractCegarLoop]: Abstraction has has 576 places, 502 transitions, 4079 flow [2022-01-19 07:27:40,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:40,823 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:27:40,823 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:27:40,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 07:27:40,823 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:27:40,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:27:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1054970379, now seen corresponding path program 7 times [2022-01-19 07:27:40,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:27:40,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643274243] [2022-01-19 07:27:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:27:40,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:27:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:27:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:27:40,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:27:40,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643274243] [2022-01-19 07:27:40,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643274243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:27:40,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:27:40,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:27:40,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475297476] [2022-01-19 07:27:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:27:40,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:27:40,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:27:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:27:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:27:40,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:27:40,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 502 transitions, 4079 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:40,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:27:40,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:27:40,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:27:48,595 INFO L129 PetriNetUnfolder]: 3840/39720 cut-off events. [2022-01-19 07:27:48,596 INFO L130 PetriNetUnfolder]: For 158488/160555 co-relation queries the response was YES. [2022-01-19 07:27:49,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99855 conditions, 39720 events. 3840/39720 cut-off events. For 158488/160555 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 645310 event pairs, 736 based on Foata normal form. 86/37656 useless extension candidates. Maximal degree in co-relation 99719. Up to 1893 conditions per place. [2022-01-19 07:27:49,695 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 105 selfloop transitions, 35 changer transitions 2/536 dead transitions. [2022-01-19 07:27:49,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 536 transitions, 4839 flow [2022-01-19 07:27:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:27:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:27:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 07:27:49,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 07:27:49,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 07:27:49,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 07:27:49,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:27:49,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 07:27:49,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:49,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:49,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:49,702 INFO L186 Difference]: Start difference. First operand has 576 places, 502 transitions, 4079 flow. Second operand 5 states and 1554 transitions. [2022-01-19 07:27:49,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 536 transitions, 4839 flow [2022-01-19 07:27:51,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 536 transitions, 4811 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-01-19 07:27:51,396 INFO L242 Difference]: Finished difference. Result has 583 places, 511 transitions, 4465 flow [2022-01-19 07:27:51,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4465, PETRI_PLACES=583, PETRI_TRANSITIONS=511} [2022-01-19 07:27:51,397 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 07:27:51,397 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 511 transitions, 4465 flow [2022-01-19 07:27:51,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:51,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:27:51,397 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:27:51,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 07:27:51,397 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:27:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:27:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash 388364671, now seen corresponding path program 8 times [2022-01-19 07:27:51,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:27:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120113258] [2022-01-19 07:27:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:27:51,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:27:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:27:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:27:51,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:27:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120113258] [2022-01-19 07:27:51,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120113258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:27:51,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:27:51,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:27:51,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584042645] [2022-01-19 07:27:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:27:51,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:27:51,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:27:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:27:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:27:51,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:27:51,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 511 transitions, 4465 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:51,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:27:51,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:27:51,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:27:58,928 INFO L129 PetriNetUnfolder]: 3835/39254 cut-off events. [2022-01-19 07:27:58,929 INFO L130 PetriNetUnfolder]: For 161736/163606 co-relation queries the response was YES. [2022-01-19 07:27:59,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99078 conditions, 39254 events. 3835/39254 cut-off events. For 161736/163606 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 635424 event pairs, 703 based on Foata normal form. 72/37154 useless extension candidates. Maximal degree in co-relation 98938. Up to 2085 conditions per place. [2022-01-19 07:27:59,715 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 93 selfloop transitions, 41 changer transitions 6/534 dead transitions. [2022-01-19 07:27:59,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 534 transitions, 4907 flow [2022-01-19 07:27:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:27:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:27:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 07:27:59,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 07:27:59,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 07:27:59,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 07:27:59,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:27:59,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 07:27:59,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:59,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:59,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:27:59,719 INFO L186 Difference]: Start difference. First operand has 583 places, 511 transitions, 4465 flow. Second operand 5 states and 1558 transitions. [2022-01-19 07:27:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 534 transitions, 4907 flow [2022-01-19 07:28:01,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 534 transitions, 4874 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:28:01,504 INFO L242 Difference]: Finished difference. Result has 587 places, 511 transitions, 4558 flow [2022-01-19 07:28:01,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4558, PETRI_PLACES=587, PETRI_TRANSITIONS=511} [2022-01-19 07:28:01,504 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 286 predicate places. [2022-01-19 07:28:01,505 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 511 transitions, 4558 flow [2022-01-19 07:28:01,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:01,505 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:01,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:01,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 07:28:01,505 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 92457819, now seen corresponding path program 6 times [2022-01-19 07:28:01,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:01,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971108901] [2022-01-19 07:28:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:01,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:01,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:01,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971108901] [2022-01-19 07:28:01,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971108901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:01,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:01,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:28:01,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311272980] [2022-01-19 07:28:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:01,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:28:01,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:28:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:28:01,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:01,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 511 transitions, 4558 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:01,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:01,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:01,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:08,728 INFO L129 PetriNetUnfolder]: 3749/37348 cut-off events. [2022-01-19 07:28:08,728 INFO L130 PetriNetUnfolder]: For 169154/170692 co-relation queries the response was YES. [2022-01-19 07:28:09,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96174 conditions, 37348 events. 3749/37348 cut-off events. For 169154/170692 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 599380 event pairs, 610 based on Foata normal form. 29/35249 useless extension candidates. Maximal degree in co-relation 96032. Up to 1700 conditions per place. [2022-01-19 07:28:09,430 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 122 selfloop transitions, 27 changer transitions 1/544 dead transitions. [2022-01-19 07:28:09,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 544 transitions, 5293 flow [2022-01-19 07:28:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:28:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:28:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 07:28:09,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 07:28:09,432 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 07:28:09,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 07:28:09,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:09,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 07:28:09,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:09,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:09,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:09,434 INFO L186 Difference]: Start difference. First operand has 587 places, 511 transitions, 4558 flow. Second operand 5 states and 1559 transitions. [2022-01-19 07:28:09,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 544 transitions, 5293 flow [2022-01-19 07:28:11,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 544 transitions, 5232 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 07:28:11,174 INFO L242 Difference]: Finished difference. Result has 591 places, 514 transitions, 4702 flow [2022-01-19 07:28:11,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4702, PETRI_PLACES=591, PETRI_TRANSITIONS=514} [2022-01-19 07:28:11,175 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 290 predicate places. [2022-01-19 07:28:11,175 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 514 transitions, 4702 flow [2022-01-19 07:28:11,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:11,175 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:11,175 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:11,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 07:28:11,176 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1307940441, now seen corresponding path program 7 times [2022-01-19 07:28:11,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412837640] [2022-01-19 07:28:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:11,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:11,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:11,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412837640] [2022-01-19 07:28:11,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412837640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:11,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:11,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:28:11,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26249217] [2022-01-19 07:28:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:11,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:28:11,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:28:11,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:28:11,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:11,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 514 transitions, 4702 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:11,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:11,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:11,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:18,732 INFO L129 PetriNetUnfolder]: 3784/38434 cut-off events. [2022-01-19 07:28:18,732 INFO L130 PetriNetUnfolder]: For 174504/176168 co-relation queries the response was YES. [2022-01-19 07:28:19,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98858 conditions, 38434 events. 3784/38434 cut-off events. For 174504/176168 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 620699 event pairs, 617 based on Foata normal form. 112/36475 useless extension candidates. Maximal degree in co-relation 98715. Up to 2052 conditions per place. [2022-01-19 07:28:19,671 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 126 selfloop transitions, 12 changer transitions 5/537 dead transitions. [2022-01-19 07:28:19,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 537 transitions, 5208 flow [2022-01-19 07:28:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:28:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:28:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1548 transitions. [2022-01-19 07:28:19,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9105882352941177 [2022-01-19 07:28:19,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1548 transitions. [2022-01-19 07:28:19,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1548 transitions. [2022-01-19 07:28:19,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:19,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1548 transitions. [2022-01-19 07:28:19,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:19,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:19,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:19,674 INFO L186 Difference]: Start difference. First operand has 591 places, 514 transitions, 4702 flow. Second operand 5 states and 1548 transitions. [2022-01-19 07:28:19,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 537 transitions, 5208 flow [2022-01-19 07:28:21,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 537 transitions, 5181 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:28:21,655 INFO L242 Difference]: Finished difference. Result has 593 places, 511 transitions, 4630 flow [2022-01-19 07:28:21,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4630, PETRI_PLACES=593, PETRI_TRANSITIONS=511} [2022-01-19 07:28:21,655 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 292 predicate places. [2022-01-19 07:28:21,656 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 511 transitions, 4630 flow [2022-01-19 07:28:21,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:21,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:21,656 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:21,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 07:28:21,656 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:21,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -555172231, now seen corresponding path program 3 times [2022-01-19 07:28:21,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:21,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605681638] [2022-01-19 07:28:21,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:21,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:21,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605681638] [2022-01-19 07:28:21,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605681638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:21,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:21,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:28:21,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127432414] [2022-01-19 07:28:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:21,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:28:21,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:28:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:28:21,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:21,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 511 transitions, 4630 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:21,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:21,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:21,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:28,528 INFO L129 PetriNetUnfolder]: 3514/33747 cut-off events. [2022-01-19 07:28:28,528 INFO L130 PetriNetUnfolder]: For 160529/162332 co-relation queries the response was YES. [2022-01-19 07:28:29,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90006 conditions, 33747 events. 3514/33747 cut-off events. For 160529/162332 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 531886 event pairs, 910 based on Foata normal form. 89/31850 useless extension candidates. Maximal degree in co-relation 89864. Up to 3171 conditions per place. [2022-01-19 07:28:29,464 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 89 selfloop transitions, 38 changer transitions 3/524 dead transitions. [2022-01-19 07:28:29,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 524 transitions, 4915 flow [2022-01-19 07:28:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:28:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:28:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 07:28:29,465 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 07:28:29,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 07:28:29,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 07:28:29,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:29,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 07:28:29,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:29,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:29,467 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:29,467 INFO L186 Difference]: Start difference. First operand has 593 places, 511 transitions, 4630 flow. Second operand 5 states and 1554 transitions. [2022-01-19 07:28:29,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 524 transitions, 4915 flow [2022-01-19 07:28:31,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 524 transitions, 4874 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:28:31,323 INFO L242 Difference]: Finished difference. Result has 592 places, 507 transitions, 4576 flow [2022-01-19 07:28:31,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4576, PETRI_PLACES=592, PETRI_TRANSITIONS=507} [2022-01-19 07:28:31,323 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 291 predicate places. [2022-01-19 07:28:31,323 INFO L470 AbstractCegarLoop]: Abstraction has has 592 places, 507 transitions, 4576 flow [2022-01-19 07:28:31,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:31,323 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:31,324 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:31,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 07:28:31,324 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1065020315, now seen corresponding path program 4 times [2022-01-19 07:28:31,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817498636] [2022-01-19 07:28:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:31,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:31,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:31,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817498636] [2022-01-19 07:28:31,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817498636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:31,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:31,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:28:31,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399478448] [2022-01-19 07:28:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:31,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:28:31,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:28:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:28:31,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:31,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 507 transitions, 4576 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:31,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:31,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:31,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:38,340 INFO L129 PetriNetUnfolder]: 3490/33329 cut-off events. [2022-01-19 07:28:38,340 INFO L130 PetriNetUnfolder]: For 156388/158203 co-relation queries the response was YES. [2022-01-19 07:28:39,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89493 conditions, 33329 events. 3490/33329 cut-off events. For 156388/158203 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 524023 event pairs, 1006 based on Foata normal form. 23/31345 useless extension candidates. Maximal degree in co-relation 89352. Up to 3451 conditions per place. [2022-01-19 07:28:39,302 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 100 selfloop transitions, 16 changer transitions 3/513 dead transitions. [2022-01-19 07:28:39,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 513 transitions, 4787 flow [2022-01-19 07:28:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:28:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:28:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1238 transitions. [2022-01-19 07:28:39,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9102941176470588 [2022-01-19 07:28:39,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1238 transitions. [2022-01-19 07:28:39,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1238 transitions. [2022-01-19 07:28:39,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:39,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1238 transitions. [2022-01-19 07:28:39,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:39,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:39,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:39,305 INFO L186 Difference]: Start difference. First operand has 592 places, 507 transitions, 4576 flow. Second operand 4 states and 1238 transitions. [2022-01-19 07:28:39,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 513 transitions, 4787 flow [2022-01-19 07:28:41,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 513 transitions, 4727 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-01-19 07:28:41,065 INFO L242 Difference]: Finished difference. Result has 594 places, 502 transitions, 4422 flow [2022-01-19 07:28:41,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4422, PETRI_PLACES=594, PETRI_TRANSITIONS=502} [2022-01-19 07:28:41,066 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 293 predicate places. [2022-01-19 07:28:41,066 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 502 transitions, 4422 flow [2022-01-19 07:28:41,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:41,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:41,067 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:41,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 07:28:41,067 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2038518433, now seen corresponding path program 9 times [2022-01-19 07:28:41,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213943029] [2022-01-19 07:28:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:41,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:41,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:41,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213943029] [2022-01-19 07:28:41,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213943029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:41,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:41,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:28:41,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302433167] [2022-01-19 07:28:41,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:41,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:28:41,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:28:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:28:41,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:41,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 502 transitions, 4422 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:41,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:41,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:41,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:47,051 INFO L129 PetriNetUnfolder]: 3242/29797 cut-off events. [2022-01-19 07:28:47,051 INFO L130 PetriNetUnfolder]: For 151888/153553 co-relation queries the response was YES. [2022-01-19 07:28:48,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83687 conditions, 29797 events. 3242/29797 cut-off events. For 151888/153553 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 460584 event pairs, 648 based on Foata normal form. 12/28195 useless extension candidates. Maximal degree in co-relation 83546. Up to 1828 conditions per place. [2022-01-19 07:28:48,267 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 83 selfloop transitions, 36 changer transitions 6/519 dead transitions. [2022-01-19 07:28:48,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 519 transitions, 4769 flow [2022-01-19 07:28:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:28:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:28:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 07:28:48,270 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 07:28:48,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 07:28:48,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 07:28:48,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:48,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 07:28:48,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:48,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:48,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:48,272 INFO L186 Difference]: Start difference. First operand has 594 places, 502 transitions, 4422 flow. Second operand 5 states and 1552 transitions. [2022-01-19 07:28:48,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 519 transitions, 4769 flow [2022-01-19 07:28:49,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 519 transitions, 4712 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:28:49,789 INFO L242 Difference]: Finished difference. Result has 595 places, 502 transitions, 4435 flow [2022-01-19 07:28:49,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4435, PETRI_PLACES=595, PETRI_TRANSITIONS=502} [2022-01-19 07:28:49,789 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 07:28:49,789 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 502 transitions, 4435 flow [2022-01-19 07:28:49,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:49,790 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:49,790 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:49,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 07:28:49,790 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1899479315, now seen corresponding path program 5 times [2022-01-19 07:28:49,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:49,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804853641] [2022-01-19 07:28:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:49,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:49,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:49,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804853641] [2022-01-19 07:28:49,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804853641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:49,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:49,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:28:49,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494549891] [2022-01-19 07:28:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:49,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:28:49,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:28:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:28:49,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:49,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 502 transitions, 4435 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:49,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:49,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:49,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:28:55,316 INFO L129 PetriNetUnfolder]: 3008/27402 cut-off events. [2022-01-19 07:28:55,317 INFO L130 PetriNetUnfolder]: For 144254/145546 co-relation queries the response was YES. [2022-01-19 07:28:55,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76263 conditions, 27402 events. 3008/27402 cut-off events. For 144254/145546 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 419150 event pairs, 749 based on Foata normal form. 22/25635 useless extension candidates. Maximal degree in co-relation 76123. Up to 2381 conditions per place. [2022-01-19 07:28:55,984 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 97 selfloop transitions, 15 changer transitions 2/508 dead transitions. [2022-01-19 07:28:55,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 508 transitions, 4655 flow [2022-01-19 07:28:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:28:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:28:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1237 transitions. [2022-01-19 07:28:55,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095588235294118 [2022-01-19 07:28:55,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1237 transitions. [2022-01-19 07:28:55,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1237 transitions. [2022-01-19 07:28:55,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:28:55,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1237 transitions. [2022-01-19 07:28:55,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:55,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:55,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:55,987 INFO L186 Difference]: Start difference. First operand has 595 places, 502 transitions, 4435 flow. Second operand 4 states and 1237 transitions. [2022-01-19 07:28:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 508 transitions, 4655 flow [2022-01-19 07:28:57,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 508 transitions, 4577 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 07:28:57,181 INFO L242 Difference]: Finished difference. Result has 595 places, 499 transitions, 4299 flow [2022-01-19 07:28:57,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4299, PETRI_PLACES=595, PETRI_TRANSITIONS=499} [2022-01-19 07:28:57,181 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 07:28:57,182 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 499 transitions, 4299 flow [2022-01-19 07:28:57,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:57,182 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:28:57,182 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:28:57,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 07:28:57,182 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:28:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:28:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1979565471, now seen corresponding path program 8 times [2022-01-19 07:28:57,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:28:57,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585849965] [2022-01-19 07:28:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:28:57,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:28:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:28:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:28:57,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:28:57,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585849965] [2022-01-19 07:28:57,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585849965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:28:57,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:28:57,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:28:57,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589412345] [2022-01-19 07:28:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:28:57,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:28:57,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:28:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:28:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:28:57,218 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:28:57,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 499 transitions, 4299 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:28:57,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:28:57,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:28:57,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:03,473 INFO L129 PetriNetUnfolder]: 3478/32113 cut-off events. [2022-01-19 07:29:03,473 INFO L130 PetriNetUnfolder]: For 148299/149789 co-relation queries the response was YES. [2022-01-19 07:29:04,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88772 conditions, 32113 events. 3478/32113 cut-off events. For 148299/149789 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 499736 event pairs, 539 based on Foata normal form. 13/30266 useless extension candidates. Maximal degree in co-relation 88633. Up to 1765 conditions per place. [2022-01-19 07:29:04,748 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 26 changer transitions 3/530 dead transitions. [2022-01-19 07:29:04,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 530 transitions, 4975 flow [2022-01-19 07:29:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 07:29:04,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 07:29:04,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 07:29:04,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 07:29:04,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:04,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 07:29:04,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:04,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:04,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:04,751 INFO L186 Difference]: Start difference. First operand has 595 places, 499 transitions, 4299 flow. Second operand 5 states and 1552 transitions. [2022-01-19 07:29:04,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 530 transitions, 4975 flow [2022-01-19 07:29:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 530 transitions, 4937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:29:06,319 INFO L242 Difference]: Finished difference. Result has 600 places, 506 transitions, 4547 flow [2022-01-19 07:29:06,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4547, PETRI_PLACES=600, PETRI_TRANSITIONS=506} [2022-01-19 07:29:06,319 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 299 predicate places. [2022-01-19 07:29:06,319 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 506 transitions, 4547 flow [2022-01-19 07:29:06,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:06,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:06,320 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:06,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 07:29:06,320 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1455420565, now seen corresponding path program 9 times [2022-01-19 07:29:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372478853] [2022-01-19 07:29:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:06,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:06,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:06,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372478853] [2022-01-19 07:29:06,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372478853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:06,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:06,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:06,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511258592] [2022-01-19 07:29:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:06,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:06,359 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:06,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 506 transitions, 4547 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:06,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:06,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:06,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:12,294 INFO L129 PetriNetUnfolder]: 3273/29064 cut-off events. [2022-01-19 07:29:12,294 INFO L130 PetriNetUnfolder]: For 153490/155078 co-relation queries the response was YES. [2022-01-19 07:29:13,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85399 conditions, 29064 events. 3273/29064 cut-off events. For 153490/155078 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 445780 event pairs, 680 based on Foata normal form. 26/27457 useless extension candidates. Maximal degree in co-relation 85257. Up to 1556 conditions per place. [2022-01-19 07:29:13,125 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 39 changer transitions 6/528 dead transitions. [2022-01-19 07:29:13,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 528 transitions, 5002 flow [2022-01-19 07:29:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 07:29:13,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 07:29:13,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 07:29:13,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 07:29:13,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:13,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 07:29:13,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:13,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:13,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:13,129 INFO L186 Difference]: Start difference. First operand has 600 places, 506 transitions, 4547 flow. Second operand 5 states and 1556 transitions. [2022-01-19 07:29:13,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 528 transitions, 5002 flow [2022-01-19 07:29:14,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 528 transitions, 4995 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:29:14,927 INFO L242 Difference]: Finished difference. Result has 603 places, 508 transitions, 4688 flow [2022-01-19 07:29:14,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4512, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4688, PETRI_PLACES=603, PETRI_TRANSITIONS=508} [2022-01-19 07:29:14,928 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 302 predicate places. [2022-01-19 07:29:14,928 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 508 transitions, 4688 flow [2022-01-19 07:29:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:14,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:14,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:14,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 07:29:14,929 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1105113117, now seen corresponding path program 10 times [2022-01-19 07:29:14,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082347609] [2022-01-19 07:29:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:14,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:14,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:14,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082347609] [2022-01-19 07:29:14,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082347609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:14,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:14,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:14,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32201667] [2022-01-19 07:29:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:14,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:14,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:14,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:14,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 508 transitions, 4688 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:14,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:14,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:14,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:21,017 INFO L129 PetriNetUnfolder]: 3352/30036 cut-off events. [2022-01-19 07:29:21,018 INFO L130 PetriNetUnfolder]: For 170487/172179 co-relation queries the response was YES. [2022-01-19 07:29:21,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85275 conditions, 30036 events. 3352/30036 cut-off events. For 170487/172179 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 461862 event pairs, 715 based on Foata normal form. 35/28321 useless extension candidates. Maximal degree in co-relation 85132. Up to 1672 conditions per place. [2022-01-19 07:29:21,532 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 98 selfloop transitions, 29 changer transitions 8/529 dead transitions. [2022-01-19 07:29:21,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 529 transitions, 5163 flow [2022-01-19 07:29:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 07:29:21,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 07:29:21,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 07:29:21,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 07:29:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:21,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 07:29:21,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:21,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:21,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:21,535 INFO L186 Difference]: Start difference. First operand has 603 places, 508 transitions, 4688 flow. Second operand 5 states and 1552 transitions. [2022-01-19 07:29:21,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 529 transitions, 5163 flow [2022-01-19 07:29:23,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 529 transitions, 5155 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 07:29:23,114 INFO L242 Difference]: Finished difference. Result has 608 places, 505 transitions, 4679 flow [2022-01-19 07:29:23,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4679, PETRI_PLACES=608, PETRI_TRANSITIONS=505} [2022-01-19 07:29:23,114 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 307 predicate places. [2022-01-19 07:29:23,114 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 505 transitions, 4679 flow [2022-01-19 07:29:23,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:23,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:23,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:23,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 07:29:23,115 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:23,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1577870249, now seen corresponding path program 10 times [2022-01-19 07:29:23,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:23,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771112619] [2022-01-19 07:29:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:23,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:23,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:23,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771112619] [2022-01-19 07:29:23,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771112619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:23,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:23,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128477823] [2022-01-19 07:29:23,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:23,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:23,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:23,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:23,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:23,155 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:23,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 505 transitions, 4679 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:23,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:23,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:23,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:28,876 INFO L129 PetriNetUnfolder]: 3343/29876 cut-off events. [2022-01-19 07:29:28,876 INFO L130 PetriNetUnfolder]: For 166877/168461 co-relation queries the response was YES. [2022-01-19 07:29:29,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85605 conditions, 29876 events. 3343/29876 cut-off events. For 166877/168461 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 458164 event pairs, 487 based on Foata normal form. 21/28194 useless extension candidates. Maximal degree in co-relation 85460. Up to 1562 conditions per place. [2022-01-19 07:29:29,386 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 95 selfloop transitions, 29 changer transitions 2/520 dead transitions. [2022-01-19 07:29:29,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 520 transitions, 5056 flow [2022-01-19 07:29:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-01-19 07:29:29,387 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.91 [2022-01-19 07:29:29,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-01-19 07:29:29,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-01-19 07:29:29,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:29,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-01-19 07:29:29,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:29,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:29,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:29,389 INFO L186 Difference]: Start difference. First operand has 608 places, 505 transitions, 4679 flow. Second operand 5 states and 1547 transitions. [2022-01-19 07:29:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 520 transitions, 5056 flow [2022-01-19 07:29:31,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 520 transitions, 5014 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 07:29:31,103 INFO L242 Difference]: Finished difference. Result has 609 places, 504 transitions, 4677 flow [2022-01-19 07:29:31,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4677, PETRI_PLACES=609, PETRI_TRANSITIONS=504} [2022-01-19 07:29:31,104 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 308 predicate places. [2022-01-19 07:29:31,104 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 504 transitions, 4677 flow [2022-01-19 07:29:31,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:31,104 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:31,104 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:31,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 07:29:31,104 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1720319565, now seen corresponding path program 11 times [2022-01-19 07:29:31,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228088139] [2022-01-19 07:29:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:31,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:31,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:31,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228088139] [2022-01-19 07:29:31,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228088139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:31,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:31,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:31,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032140245] [2022-01-19 07:29:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:31,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:31,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:31,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:31,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 504 transitions, 4677 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:31,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:31,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:31,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:36,851 INFO L129 PetriNetUnfolder]: 3329/29216 cut-off events. [2022-01-19 07:29:36,851 INFO L130 PetriNetUnfolder]: For 165534/167106 co-relation queries the response was YES. [2022-01-19 07:29:37,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 29216 events. 3329/29216 cut-off events. For 165534/167106 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 445568 event pairs, 438 based on Foata normal form. 21/27568 useless extension candidates. Maximal degree in co-relation 84823. Up to 1847 conditions per place. [2022-01-19 07:29:37,266 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 110 selfloop transitions, 13 changer transitions 7/524 dead transitions. [2022-01-19 07:29:37,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 524 transitions, 5088 flow [2022-01-19 07:29:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 07:29:37,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 07:29:37,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 07:29:37,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 07:29:37,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:37,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 07:29:37,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:37,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:37,269 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:37,269 INFO L186 Difference]: Start difference. First operand has 609 places, 504 transitions, 4677 flow. Second operand 5 states and 1549 transitions. [2022-01-19 07:29:37,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 524 transitions, 5088 flow [2022-01-19 07:29:38,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 524 transitions, 5055 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 07:29:38,865 INFO L242 Difference]: Finished difference. Result has 611 places, 502 transitions, 4612 flow [2022-01-19 07:29:38,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4612, PETRI_PLACES=611, PETRI_TRANSITIONS=502} [2022-01-19 07:29:38,865 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 07:29:38,865 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 502 transitions, 4612 flow [2022-01-19 07:29:38,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:38,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:38,866 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:38,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 07:29:38,866 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash 814846189, now seen corresponding path program 12 times [2022-01-19 07:29:38,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:38,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501285597] [2022-01-19 07:29:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:38,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:38,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:38,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501285597] [2022-01-19 07:29:38,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501285597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:38,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:38,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:38,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228661465] [2022-01-19 07:29:38,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:38,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:38,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:38,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:38,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:38,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:38,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 502 transitions, 4612 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:38,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:38,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:38,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:44,354 INFO L129 PetriNetUnfolder]: 3241/27729 cut-off events. [2022-01-19 07:29:44,354 INFO L130 PetriNetUnfolder]: For 161831/163777 co-relation queries the response was YES. [2022-01-19 07:29:44,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82361 conditions, 27729 events. 3241/27729 cut-off events. For 161831/163777 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 418575 event pairs, 460 based on Foata normal form. 32/26170 useless extension candidates. Maximal degree in co-relation 82216. Up to 1847 conditions per place. [2022-01-19 07:29:44,769 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 105 selfloop transitions, 11 changer transitions 12/522 dead transitions. [2022-01-19 07:29:44,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 522 transitions, 5018 flow [2022-01-19 07:29:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 07:29:44,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 07:29:44,770 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 07:29:44,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 07:29:44,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:44,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 07:29:44,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:44,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:44,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:44,772 INFO L186 Difference]: Start difference. First operand has 611 places, 502 transitions, 4612 flow. Second operand 5 states and 1549 transitions. [2022-01-19 07:29:44,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 522 transitions, 5018 flow [2022-01-19 07:29:46,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 522 transitions, 4978 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 07:29:46,352 INFO L242 Difference]: Finished difference. Result has 611 places, 498 transitions, 4489 flow [2022-01-19 07:29:46,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4535, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4489, PETRI_PLACES=611, PETRI_TRANSITIONS=498} [2022-01-19 07:29:46,352 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 07:29:46,352 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 498 transitions, 4489 flow [2022-01-19 07:29:46,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:46,352 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:46,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:46,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 07:29:46,353 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:46,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash 177107899, now seen corresponding path program 11 times [2022-01-19 07:29:46,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:46,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924725106] [2022-01-19 07:29:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:46,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:46,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924725106] [2022-01-19 07:29:46,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924725106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:46,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:46,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:46,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34701043] [2022-01-19 07:29:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:46,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:46,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:46,402 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:46,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 498 transitions, 4489 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:46,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:46,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:46,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:51,163 INFO L129 PetriNetUnfolder]: 2881/23373 cut-off events. [2022-01-19 07:29:51,164 INFO L130 PetriNetUnfolder]: For 149834/151082 co-relation queries the response was YES. [2022-01-19 07:29:51,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73267 conditions, 23373 events. 2881/23373 cut-off events. For 149834/151082 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 343296 event pairs, 641 based on Foata normal form. 33/22000 useless extension candidates. Maximal degree in co-relation 73123. Up to 1314 conditions per place. [2022-01-19 07:29:51,737 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 77 selfloop transitions, 38 changer transitions 5/514 dead transitions. [2022-01-19 07:29:51,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 514 transitions, 4805 flow [2022-01-19 07:29:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 07:29:51,738 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 07:29:51,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 07:29:51,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 07:29:51,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:51,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 07:29:51,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:51,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:51,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:51,740 INFO L186 Difference]: Start difference. First operand has 611 places, 498 transitions, 4489 flow. Second operand 5 states and 1557 transitions. [2022-01-19 07:29:51,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 514 transitions, 4805 flow [2022-01-19 07:29:52,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 514 transitions, 4745 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 07:29:52,979 INFO L242 Difference]: Finished difference. Result has 610 places, 497 transitions, 4485 flow [2022-01-19 07:29:52,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4485, PETRI_PLACES=610, PETRI_TRANSITIONS=497} [2022-01-19 07:29:52,979 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 07:29:52,980 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 497 transitions, 4485 flow [2022-01-19 07:29:52,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:52,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:52,980 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:52,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 07:29:52,980 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1213810355, now seen corresponding path program 12 times [2022-01-19 07:29:52,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:52,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648799018] [2022-01-19 07:29:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:52,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:29:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:29:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:29:53,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:29:53,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648799018] [2022-01-19 07:29:53,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648799018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:29:53,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:29:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:29:53,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004580392] [2022-01-19 07:29:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:29:53,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:29:53,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:29:53,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:29:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:29:53,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 07:29:53,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 497 transitions, 4485 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:53,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:29:53,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 07:29:53,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:29:57,911 INFO L129 PetriNetUnfolder]: 3078/25517 cut-off events. [2022-01-19 07:29:57,911 INFO L130 PetriNetUnfolder]: For 146429/147659 co-relation queries the response was YES. [2022-01-19 07:29:58,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76444 conditions, 25517 events. 3078/25517 cut-off events. For 146429/147659 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 379569 event pairs, 595 based on Foata normal form. 26/23913 useless extension candidates. Maximal degree in co-relation 76302. Up to 1428 conditions per place. [2022-01-19 07:29:58,379 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 71 selfloop transitions, 41 changer transitions 5/511 dead transitions. [2022-01-19 07:29:58,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 511 transitions, 4785 flow [2022-01-19 07:29:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:29:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:29:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 07:29:58,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 07:29:58,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 07:29:58,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 07:29:58,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:29:58,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 07:29:58,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:58,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:58,383 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:58,383 INFO L186 Difference]: Start difference. First operand has 610 places, 497 transitions, 4485 flow. Second operand 5 states and 1557 transitions. [2022-01-19 07:29:58,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 511 transitions, 4785 flow [2022-01-19 07:29:59,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 511 transitions, 4694 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 07:29:59,982 INFO L242 Difference]: Finished difference. Result has 610 places, 496 transitions, 4452 flow [2022-01-19 07:29:59,982 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4452, PETRI_PLACES=610, PETRI_TRANSITIONS=496} [2022-01-19 07:29:59,982 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 07:29:59,982 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 496 transitions, 4452 flow [2022-01-19 07:29:59,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:29:59,983 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:29:59,983 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:29:59,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 07:29:59,983 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:29:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:29:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1660460544, now seen corresponding path program 1 times [2022-01-19 07:29:59,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:29:59,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020834647] [2022-01-19 07:29:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:29:59,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:30:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:00,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:30:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020834647] [2022-01-19 07:30:00,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020834647] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:00,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839913423] [2022-01-19 07:30:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:30:00,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:30:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:30:00,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:30:00,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 07:30:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:00,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 07:30:00,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:30:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:01,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:30:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:02,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839913423] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:02,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:30:02,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 07:30:02,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423752725] [2022-01-19 07:30:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:30:02,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 07:30:02,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:30:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 07:30:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 07:30:02,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 07:30:02,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 496 transitions, 4452 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:02,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:30:02,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 07:30:02,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:30:14,839 INFO L129 PetriNetUnfolder]: 11636/59666 cut-off events. [2022-01-19 07:30:14,840 INFO L130 PetriNetUnfolder]: For 117805/123458 co-relation queries the response was YES. [2022-01-19 07:30:16,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120920 conditions, 59666 events. 11636/59666 cut-off events. For 117805/123458 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 974412 event pairs, 5754 based on Foata normal form. 685/52948 useless extension candidates. Maximal degree in co-relation 120780. Up to 6986 conditions per place. [2022-01-19 07:30:16,819 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 313 selfloop transitions, 44 changer transitions 29/722 dead transitions. [2022-01-19 07:30:16,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 722 transitions, 6447 flow [2022-01-19 07:30:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:30:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:30:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7104 transitions. [2022-01-19 07:30:16,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6964705882352941 [2022-01-19 07:30:16,823 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7104 transitions. [2022-01-19 07:30:16,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7104 transitions. [2022-01-19 07:30:16,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:30:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7104 transitions. [2022-01-19 07:30:16,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.8) internal successors, (7104), 30 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:16,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:16,833 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:16,833 INFO L186 Difference]: Start difference. First operand has 610 places, 496 transitions, 4452 flow. Second operand 30 states and 7104 transitions. [2022-01-19 07:30:16,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 722 transitions, 6447 flow [2022-01-19 07:30:17,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 722 transitions, 6385 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 07:30:17,575 INFO L242 Difference]: Finished difference. Result has 642 places, 501 transitions, 4459 flow [2022-01-19 07:30:17,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4459, PETRI_PLACES=642, PETRI_TRANSITIONS=501} [2022-01-19 07:30:17,575 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 341 predicate places. [2022-01-19 07:30:17,575 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 501 transitions, 4459 flow [2022-01-19 07:30:17,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:17,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:30:17,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:30:17,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:30:17,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-19 07:30:17,792 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:30:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:30:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1778909278, now seen corresponding path program 2 times [2022-01-19 07:30:17,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:30:17,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627311853] [2022-01-19 07:30:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:30:17,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:30:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:18,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:30:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627311853] [2022-01-19 07:30:18,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627311853] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:18,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332106085] [2022-01-19 07:30:18,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:30:18,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:30:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:30:18,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:30:18,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 07:30:18,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 07:30:18,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:30:18,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 07:30:18,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:30:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:30:19,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:30:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332106085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:30:19,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:30:19,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 07:30:19,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953095663] [2022-01-19 07:30:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:30:19,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 07:30:19,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:30:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 07:30:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 07:30:19,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 07:30:19,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 501 transitions, 4459 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:19,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:30:19,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 07:30:19,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:30:32,663 INFO L129 PetriNetUnfolder]: 12474/60626 cut-off events. [2022-01-19 07:30:32,663 INFO L130 PetriNetUnfolder]: For 124828/131007 co-relation queries the response was YES. [2022-01-19 07:30:34,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127644 conditions, 60626 events. 12474/60626 cut-off events. For 124828/131007 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 984196 event pairs, 6342 based on Foata normal form. 585/53622 useless extension candidates. Maximal degree in co-relation 127500. Up to 7512 conditions per place. [2022-01-19 07:30:35,035 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 284 selfloop transitions, 46 changer transitions 14/678 dead transitions. [2022-01-19 07:30:35,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 678 transitions, 6080 flow [2022-01-19 07:30:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:30:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:30:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8132 transitions. [2022-01-19 07:30:35,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6833613445378152 [2022-01-19 07:30:35,039 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8132 transitions. [2022-01-19 07:30:35,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8132 transitions. [2022-01-19 07:30:35,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:30:35,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8132 transitions. [2022-01-19 07:30:35,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:35,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:35,050 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:35,050 INFO L186 Difference]: Start difference. First operand has 642 places, 501 transitions, 4459 flow. Second operand 35 states and 8132 transitions. [2022-01-19 07:30:35,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 678 transitions, 6080 flow [2022-01-19 07:30:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 678 transitions, 5974 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-01-19 07:30:35,843 INFO L242 Difference]: Finished difference. Result has 658 places, 521 transitions, 4608 flow [2022-01-19 07:30:35,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4608, PETRI_PLACES=658, PETRI_TRANSITIONS=521} [2022-01-19 07:30:35,844 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 357 predicate places. [2022-01-19 07:30:35,844 INFO L470 AbstractCegarLoop]: Abstraction has has 658 places, 521 transitions, 4608 flow [2022-01-19 07:30:35,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:35,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:30:35,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:30:35,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 07:30:36,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-19 07:30:36,045 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:30:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:30:36,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1880461646, now seen corresponding path program 3 times [2022-01-19 07:30:36,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:30:36,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979873147] [2022-01-19 07:30:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:30:36,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:30:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:36,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:30:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979873147] [2022-01-19 07:30:36,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979873147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:36,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054536262] [2022-01-19 07:30:36,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:30:36,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:30:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:30:36,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:30:36,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 07:30:36,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 07:30:36,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:30:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 07:30:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:30:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:30:37,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:30:37,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054536262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:30:37,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:30:37,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 07:30:37,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304194951] [2022-01-19 07:30:37,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:30:37,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 07:30:37,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:30:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 07:30:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 07:30:37,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 07:30:37,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 521 transitions, 4608 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:37,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:30:37,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 07:30:37,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:30:50,874 INFO L129 PetriNetUnfolder]: 12536/61177 cut-off events. [2022-01-19 07:30:50,874 INFO L130 PetriNetUnfolder]: For 134667/141278 co-relation queries the response was YES. [2022-01-19 07:30:53,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131110 conditions, 61177 events. 12536/61177 cut-off events. For 134667/141278 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 994972 event pairs, 5605 based on Foata normal form. 622/54216 useless extension candidates. Maximal degree in co-relation 130963. Up to 7512 conditions per place. [2022-01-19 07:30:53,388 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 292 selfloop transitions, 53 changer transitions 36/715 dead transitions. [2022-01-19 07:30:53,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 715 transitions, 6571 flow [2022-01-19 07:30:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 07:30:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 07:30:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8135 transitions. [2022-01-19 07:30:53,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6836134453781513 [2022-01-19 07:30:53,393 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8135 transitions. [2022-01-19 07:30:53,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8135 transitions. [2022-01-19 07:30:53,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:30:53,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8135 transitions. [2022-01-19 07:30:53,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.42857142857142) internal successors, (8135), 35 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:53,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:53,403 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:53,403 INFO L186 Difference]: Start difference. First operand has 658 places, 521 transitions, 4608 flow. Second operand 35 states and 8135 transitions. [2022-01-19 07:30:53,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 715 transitions, 6571 flow [2022-01-19 07:30:54,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 715 transitions, 6483 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-01-19 07:30:54,207 INFO L242 Difference]: Finished difference. Result has 669 places, 531 transitions, 4777 flow [2022-01-19 07:30:54,207 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4777, PETRI_PLACES=669, PETRI_TRANSITIONS=531} [2022-01-19 07:30:54,207 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 368 predicate places. [2022-01-19 07:30:54,207 INFO L470 AbstractCegarLoop]: Abstraction has has 669 places, 531 transitions, 4777 flow [2022-01-19 07:30:54,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:54,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:30:54,208 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:30:54,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 07:30:54,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:30:54,409 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:30:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:30:54,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1627662569, now seen corresponding path program 1 times [2022-01-19 07:30:54,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:30:54,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985105567] [2022-01-19 07:30:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:30:54,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:30:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:54,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:30:54,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985105567] [2022-01-19 07:30:54,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985105567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698989892] [2022-01-19 07:30:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:30:54,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:30:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:30:54,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:30:54,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 07:30:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:30:54,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:30:54,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:30:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:55,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:30:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:30:55,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698989892] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:30:55,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:30:55,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 07:30:55,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199293842] [2022-01-19 07:30:55,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:30:55,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 07:30:55,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:30:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 07:30:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 07:30:55,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 07:30:55,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 531 transitions, 4777 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:30:55,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:30:55,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 07:30:55,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:04,097 INFO L129 PetriNetUnfolder]: 6980/41541 cut-off events. [2022-01-19 07:31:04,098 INFO L130 PetriNetUnfolder]: For 89591/93094 co-relation queries the response was YES. [2022-01-19 07:31:05,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88920 conditions, 41541 events. 6980/41541 cut-off events. For 89591/93094 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 653929 event pairs, 2867 based on Foata normal form. 139/36727 useless extension candidates. Maximal degree in co-relation 88769. Up to 5289 conditions per place. [2022-01-19 07:31:05,558 INFO L132 encePairwiseOnDemand]: 316/340 looper letters, 205 selfloop transitions, 30 changer transitions 4/605 dead transitions. [2022-01-19 07:31:05,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 605 transitions, 5524 flow [2022-01-19 07:31:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:31:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:31:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4864 transitions. [2022-01-19 07:31:05,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7152941176470589 [2022-01-19 07:31:05,561 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4864 transitions. [2022-01-19 07:31:05,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4864 transitions. [2022-01-19 07:31:05,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:05,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4864 transitions. [2022-01-19 07:31:05,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 243.2) internal successors, (4864), 20 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:05,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:05,567 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:05,567 INFO L186 Difference]: Start difference. First operand has 669 places, 531 transitions, 4777 flow. Second operand 20 states and 4864 transitions. [2022-01-19 07:31:05,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 605 transitions, 5524 flow [2022-01-19 07:31:06,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 605 transitions, 5449 flow, removed 13 selfloop flow, removed 24 redundant places. [2022-01-19 07:31:06,403 INFO L242 Difference]: Finished difference. Result has 660 places, 532 transitions, 4803 flow [2022-01-19 07:31:06,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4803, PETRI_PLACES=660, PETRI_TRANSITIONS=532} [2022-01-19 07:31:06,404 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 359 predicate places. [2022-01-19 07:31:06,404 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 532 transitions, 4803 flow [2022-01-19 07:31:06,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:06,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:06,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:06,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 07:31:06,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:06,624 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash 496985548, now seen corresponding path program 4 times [2022-01-19 07:31:06,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:06,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42744380] [2022-01-19 07:31:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:06,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:06,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42744380] [2022-01-19 07:31:06,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42744380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:06,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292476853] [2022-01-19 07:31:06,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 07:31:06,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:31:06,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:31:06,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 07:31:07,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 07:31:07,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:31:07,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 07:31:07,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:31:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:07,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:31:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:09,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292476853] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:09,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:31:09,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 07:31:09,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171284081] [2022-01-19 07:31:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:09,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 07:31:09,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 07:31:09,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 07:31:09,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 07:31:09,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 532 transitions, 4803 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:09,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:09,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 07:31:09,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:22,514 INFO L129 PetriNetUnfolder]: 11831/61666 cut-off events. [2022-01-19 07:31:22,514 INFO L130 PetriNetUnfolder]: For 154490/161167 co-relation queries the response was YES. [2022-01-19 07:31:24,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135321 conditions, 61666 events. 11831/61666 cut-off events. For 154490/161167 co-relation queries the response was YES. Maximal size of possible extension queue 2407. Compared 1014584 event pairs, 6509 based on Foata normal form. 580/54663 useless extension candidates. Maximal degree in co-relation 135170. Up to 7434 conditions per place. [2022-01-19 07:31:24,842 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 340 selfloop transitions, 46 changer transitions 18/740 dead transitions. [2022-01-19 07:31:24,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 740 transitions, 6947 flow [2022-01-19 07:31:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 07:31:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 07:31:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7103 transitions. [2022-01-19 07:31:24,845 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6963725490196079 [2022-01-19 07:31:24,845 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7103 transitions. [2022-01-19 07:31:24,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7103 transitions. [2022-01-19 07:31:24,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:24,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7103 transitions. [2022-01-19 07:31:24,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.76666666666668) internal successors, (7103), 30 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:24,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:24,854 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:24,854 INFO L186 Difference]: Start difference. First operand has 660 places, 532 transitions, 4803 flow. Second operand 30 states and 7103 transitions. [2022-01-19 07:31:24,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 740 transitions, 6947 flow [2022-01-19 07:31:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 740 transitions, 6880 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-01-19 07:31:26,034 INFO L242 Difference]: Finished difference. Result has 677 places, 533 transitions, 4863 flow [2022-01-19 07:31:26,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4746, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4863, PETRI_PLACES=677, PETRI_TRANSITIONS=533} [2022-01-19 07:31:26,034 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 376 predicate places. [2022-01-19 07:31:26,034 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 533 transitions, 4863 flow [2022-01-19 07:31:26,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:26,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:26,035 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:26,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 07:31:26,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:26,240 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash -551412746, now seen corresponding path program 1 times [2022-01-19 07:31:26,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:26,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280385491] [2022-01-19 07:31:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:26,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:26,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:26,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280385491] [2022-01-19 07:31:26,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280385491] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:26,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7136222] [2022-01-19 07:31:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:26,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:26,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:31:26,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:31:26,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 07:31:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:26,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 07:31:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:31:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:26,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:31:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:27,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7136222] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:27,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:31:27,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 07:31:27,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165008857] [2022-01-19 07:31:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:27,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 07:31:27,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 07:31:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 07:31:27,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 07:31:27,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 533 transitions, 4863 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:27,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:27,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 07:31:27,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:38,101 INFO L129 PetriNetUnfolder]: 8459/50435 cut-off events. [2022-01-19 07:31:38,101 INFO L130 PetriNetUnfolder]: For 108250/112469 co-relation queries the response was YES. [2022-01-19 07:31:39,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106566 conditions, 50435 events. 8459/50435 cut-off events. For 108250/112469 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 819491 event pairs, 3784 based on Foata normal form. 67/44526 useless extension candidates. Maximal degree in co-relation 106413. Up to 9470 conditions per place. [2022-01-19 07:31:40,074 INFO L132 encePairwiseOnDemand]: 319/340 looper letters, 217 selfloop transitions, 39 changer transitions 4/626 dead transitions. [2022-01-19 07:31:40,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 626 transitions, 5740 flow [2022-01-19 07:31:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:31:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:31:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4398 transitions. [2022-01-19 07:31:40,077 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7186274509803922 [2022-01-19 07:31:40,077 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4398 transitions. [2022-01-19 07:31:40,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4398 transitions. [2022-01-19 07:31:40,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:40,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4398 transitions. [2022-01-19 07:31:40,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 244.33333333333334) internal successors, (4398), 18 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:40,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:40,082 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:40,082 INFO L186 Difference]: Start difference. First operand has 677 places, 533 transitions, 4863 flow. Second operand 18 states and 4398 transitions. [2022-01-19 07:31:40,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 626 transitions, 5740 flow [2022-01-19 07:31:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 626 transitions, 5631 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-01-19 07:31:40,884 INFO L242 Difference]: Finished difference. Result has 675 places, 540 transitions, 4933 flow [2022-01-19 07:31:40,885 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4933, PETRI_PLACES=675, PETRI_TRANSITIONS=540} [2022-01-19 07:31:40,885 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 374 predicate places. [2022-01-19 07:31:40,885 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 540 transitions, 4933 flow [2022-01-19 07:31:40,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:40,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:40,885 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:40,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 07:31:41,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:41,099 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1461126064, now seen corresponding path program 1 times [2022-01-19 07:31:41,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:41,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111610396] [2022-01-19 07:31:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:41,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:41,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:41,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111610396] [2022-01-19 07:31:41,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111610396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:31:41,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:31:41,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:31:41,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137565966] [2022-01-19 07:31:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:41,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:31:41,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:31:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:31:41,148 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 07:31:41,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 540 transitions, 4933 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:41,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:41,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 07:31:41,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:46,513 INFO L129 PetriNetUnfolder]: 3608/24349 cut-off events. [2022-01-19 07:31:46,514 INFO L130 PetriNetUnfolder]: For 85485/89284 co-relation queries the response was YES. [2022-01-19 07:31:46,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61172 conditions, 24349 events. 3608/24349 cut-off events. For 85485/89284 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 366642 event pairs, 1254 based on Foata normal form. 27/22345 useless extension candidates. Maximal degree in co-relation 61012. Up to 2900 conditions per place. [2022-01-19 07:31:46,890 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 104 selfloop transitions, 12 changer transitions 26/558 dead transitions. [2022-01-19 07:31:46,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 558 transitions, 5249 flow [2022-01-19 07:31:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:31:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:31:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2784 transitions. [2022-01-19 07:31:46,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188235294117647 [2022-01-19 07:31:46,892 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2784 transitions. [2022-01-19 07:31:46,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2784 transitions. [2022-01-19 07:31:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:46,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2784 transitions. [2022-01-19 07:31:46,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.4) internal successors, (2784), 10 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:46,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:46,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:46,895 INFO L186 Difference]: Start difference. First operand has 675 places, 540 transitions, 4933 flow. Second operand 10 states and 2784 transitions. [2022-01-19 07:31:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 558 transitions, 5249 flow [2022-01-19 07:31:47,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 558 transitions, 5195 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-01-19 07:31:47,498 INFO L242 Difference]: Finished difference. Result has 673 places, 509 transitions, 4677 flow [2022-01-19 07:31:47,499 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4677, PETRI_PLACES=673, PETRI_TRANSITIONS=509} [2022-01-19 07:31:47,499 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 372 predicate places. [2022-01-19 07:31:47,499 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 509 transitions, 4677 flow [2022-01-19 07:31:47,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:47,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:47,499 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:47,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 07:31:47,500 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -633588800, now seen corresponding path program 1 times [2022-01-19 07:31:47,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:47,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569224358] [2022-01-19 07:31:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:47,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:47,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:47,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569224358] [2022-01-19 07:31:47,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569224358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:31:47,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:31:47,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:31:47,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196209420] [2022-01-19 07:31:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:31:47,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:31:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:31:47,544 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 07:31:47,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 509 transitions, 4677 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:47,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:47,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 07:31:47,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:50,543 INFO L129 PetriNetUnfolder]: 2595/13834 cut-off events. [2022-01-19 07:31:50,543 INFO L130 PetriNetUnfolder]: For 47505/49783 co-relation queries the response was YES. [2022-01-19 07:31:50,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36566 conditions, 13834 events. 2595/13834 cut-off events. For 47505/49783 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 180979 event pairs, 1182 based on Foata normal form. 58/12761 useless extension candidates. Maximal degree in co-relation 36407. Up to 3153 conditions per place. [2022-01-19 07:31:50,731 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 102 selfloop transitions, 12 changer transitions 6/529 dead transitions. [2022-01-19 07:31:50,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 529 transitions, 4981 flow [2022-01-19 07:31:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:31:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:31:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2780 transitions. [2022-01-19 07:31:50,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 07:31:50,734 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2780 transitions. [2022-01-19 07:31:50,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2780 transitions. [2022-01-19 07:31:50,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:50,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2780 transitions. [2022-01-19 07:31:50,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:50,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:50,737 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:50,737 INFO L186 Difference]: Start difference. First operand has 673 places, 509 transitions, 4677 flow. Second operand 10 states and 2780 transitions. [2022-01-19 07:31:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 529 transitions, 4981 flow [2022-01-19 07:31:51,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 529 transitions, 4930 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-01-19 07:31:51,005 INFO L242 Difference]: Finished difference. Result has 651 places, 502 transitions, 4601 flow [2022-01-19 07:31:51,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4582, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4601, PETRI_PLACES=651, PETRI_TRANSITIONS=502} [2022-01-19 07:31:51,006 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 07:31:51,006 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 502 transitions, 4601 flow [2022-01-19 07:31:51,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:51,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:51,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:51,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 07:31:51,006 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:51,007 INFO L85 PathProgramCache]: Analyzing trace with hash -556891992, now seen corresponding path program 1 times [2022-01-19 07:31:51,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:51,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232013276] [2022-01-19 07:31:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:51,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:51,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:51,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232013276] [2022-01-19 07:31:51,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232013276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:31:51,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:31:51,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:31:51,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300533507] [2022-01-19 07:31:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:51,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:31:51,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:31:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:31:51,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 07:31:51,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 502 transitions, 4601 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:51,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:51,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 07:31:51,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:53,417 INFO L129 PetriNetUnfolder]: 1639/10470 cut-off events. [2022-01-19 07:31:53,417 INFO L130 PetriNetUnfolder]: For 42344/44307 co-relation queries the response was YES. [2022-01-19 07:31:53,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29702 conditions, 10470 events. 1639/10470 cut-off events. For 42344/44307 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 132194 event pairs, 441 based on Foata normal form. 34/9758 useless extension candidates. Maximal degree in co-relation 29546. Up to 1301 conditions per place. [2022-01-19 07:31:53,555 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 81 selfloop transitions, 12 changer transitions 45/530 dead transitions. [2022-01-19 07:31:53,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 530 transitions, 4948 flow [2022-01-19 07:31:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:31:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:31:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2773 transitions. [2022-01-19 07:31:53,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155882352941176 [2022-01-19 07:31:53,557 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2773 transitions. [2022-01-19 07:31:53,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2773 transitions. [2022-01-19 07:31:53,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:53,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2773 transitions. [2022-01-19 07:31:53,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.3) internal successors, (2773), 10 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:53,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:53,560 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:53,561 INFO L186 Difference]: Start difference. First operand has 651 places, 502 transitions, 4601 flow. Second operand 10 states and 2773 transitions. [2022-01-19 07:31:53,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 530 transitions, 4948 flow [2022-01-19 07:31:53,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 530 transitions, 4912 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-01-19 07:31:53,813 INFO L242 Difference]: Finished difference. Result has 651 places, 460 transitions, 4201 flow [2022-01-19 07:31:53,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4201, PETRI_PLACES=651, PETRI_TRANSITIONS=460} [2022-01-19 07:31:53,813 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 07:31:53,814 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 460 transitions, 4201 flow [2022-01-19 07:31:53,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 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) [2022-01-19 07:31:53,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:53,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:53,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 07:31:53,814 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:53,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1630836678, now seen corresponding path program 1 times [2022-01-19 07:31:53,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:53,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57406257] [2022-01-19 07:31:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:53,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:53,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57406257] [2022-01-19 07:31:53,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57406257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781106090] [2022-01-19 07:31:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:53,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:31:53,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:31:53,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 07:31:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:54,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 07:31:54,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:31:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:54,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:31:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:31:54,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781106090] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 07:31:54,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 07:31:54,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 07:31:54,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163033047] [2022-01-19 07:31:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:54,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 07:31:54,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 07:31:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:31:54,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 340 [2022-01-19 07:31:54,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 460 transitions, 4201 flow. Second operand has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:54,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:54,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 340 [2022-01-19 07:31:54,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:31:58,596 INFO L129 PetriNetUnfolder]: 3619/17220 cut-off events. [2022-01-19 07:31:58,596 INFO L130 PetriNetUnfolder]: For 32023/33157 co-relation queries the response was YES. [2022-01-19 07:31:58,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37430 conditions, 17220 events. 3619/17220 cut-off events. For 32023/33157 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 227169 event pairs, 1146 based on Foata normal form. 193/16129 useless extension candidates. Maximal degree in co-relation 37274. Up to 1892 conditions per place. [2022-01-19 07:31:58,895 INFO L132 encePairwiseOnDemand]: 323/340 looper letters, 105 selfloop transitions, 18 changer transitions 1/512 dead transitions. [2022-01-19 07:31:58,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 512 transitions, 4639 flow [2022-01-19 07:31:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 07:31:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 07:31:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4068 transitions. [2022-01-19 07:31:58,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7976470588235294 [2022-01-19 07:31:58,898 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4068 transitions. [2022-01-19 07:31:58,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4068 transitions. [2022-01-19 07:31:58,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:31:58,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4068 transitions. [2022-01-19 07:31:58,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 271.2) internal successors, (4068), 15 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:58,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:58,903 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:58,903 INFO L186 Difference]: Start difference. First operand has 651 places, 460 transitions, 4201 flow. Second operand 15 states and 4068 transitions. [2022-01-19 07:31:58,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 512 transitions, 4639 flow [2022-01-19 07:31:59,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 512 transitions, 4443 flow, removed 59 selfloop flow, removed 40 redundant places. [2022-01-19 07:31:59,191 INFO L242 Difference]: Finished difference. Result has 582 places, 465 transitions, 4132 flow [2022-01-19 07:31:59,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4132, PETRI_PLACES=582, PETRI_TRANSITIONS=465} [2022-01-19 07:31:59,192 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 281 predicate places. [2022-01-19 07:31:59,192 INFO L470 AbstractCegarLoop]: Abstraction has has 582 places, 465 transitions, 4132 flow [2022-01-19 07:31:59,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:59,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:31:59,193 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:31:59,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 07:31:59,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:31:59,393 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:31:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:31:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash 520118201, now seen corresponding path program 1 times [2022-01-19 07:31:59,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:31:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332427381] [2022-01-19 07:31:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:31:59,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:31:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:31:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:31:59,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:31:59,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332427381] [2022-01-19 07:31:59,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332427381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:31:59,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:31:59,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 07:31:59,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979453852] [2022-01-19 07:31:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:31:59,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:31:59,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:31:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:31:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:31:59,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 07:31:59,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 465 transitions, 4132 flow. Second operand has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:31:59,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:31:59,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 07:31:59,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:32:00,635 INFO L129 PetriNetUnfolder]: 821/5563 cut-off events. [2022-01-19 07:32:00,636 INFO L130 PetriNetUnfolder]: For 16521/17362 co-relation queries the response was YES. [2022-01-19 07:32:00,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13195 conditions, 5563 events. 821/5563 cut-off events. For 16521/17362 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 60950 event pairs, 328 based on Foata normal form. 58/5232 useless extension candidates. Maximal degree in co-relation 13063. Up to 1156 conditions per place. [2022-01-19 07:32:00,724 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 56 selfloop transitions, 8 changer transitions 29/485 dead transitions. [2022-01-19 07:32:00,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 485 transitions, 4362 flow [2022-01-19 07:32:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 07:32:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 07:32:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2770 transitions. [2022-01-19 07:32:00,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147058823529412 [2022-01-19 07:32:00,726 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2770 transitions. [2022-01-19 07:32:00,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2770 transitions. [2022-01-19 07:32:00,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:32:00,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2770 transitions. [2022-01-19 07:32:00,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.0) internal successors, (2770), 10 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:00,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:00,729 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:00,729 INFO L186 Difference]: Start difference. First operand has 582 places, 465 transitions, 4132 flow. Second operand 10 states and 2770 transitions. [2022-01-19 07:32:00,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 485 transitions, 4362 flow [2022-01-19 07:32:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 485 transitions, 4336 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-01-19 07:32:00,813 INFO L242 Difference]: Finished difference. Result has 580 places, 454 transitions, 4066 flow [2022-01-19 07:32:00,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=580, PETRI_TRANSITIONS=454} [2022-01-19 07:32:00,813 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 07:32:00,814 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 454 transitions, 4066 flow [2022-01-19 07:32:00,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:32:00,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:32:00,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:00,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 07:32:00,814 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 07:32:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:32:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 438695501, now seen corresponding path program 1 times [2022-01-19 07:32:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:32:00,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353340718] [2022-01-19 07:32:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:00,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:32:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:32:01,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353340718] [2022-01-19 07:32:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353340718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:32:01,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170381368] [2022-01-19 07:32:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:32:01,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:32:01,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:32:01,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:32:01,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 07:32:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:32:01,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 07:32:01,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:32:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:32:02,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-19 07:32:02,997 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 07:32:03,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 07:32:03,032 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 07:32:03,035 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 07:32:03,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-19 07:32:03,218 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 36 known predicates. [2022-01-19 07:32:03,220 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 07:32:03,220 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 07:32:03,220 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 07:32:03,223 INFO L732 BasicCegarLoop]: Path program histogram: [12, 12, 6, 6, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:32:03,224 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:32:03,224 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:32:03,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:32:03 BasicIcfg [2022-01-19 07:32:03,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:32:03,226 INFO L158 Benchmark]: Toolchain (without parser) took 713744.59ms. Allocated memory was 411.0MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 354.0MB in the beginning and 8.9GB in the end (delta: -8.6GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2022-01-19 07:32:03,226 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 411.0MB. Free memory is still 370.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:32:03,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.39ms. Allocated memory was 411.0MB in the beginning and 507.5MB in the end (delta: 96.5MB). Free memory was 353.7MB in the beginning and 476.2MB in the end (delta: -122.4MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. [2022-01-19 07:32:03,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.37ms. Allocated memory is still 507.5MB. Free memory was 475.1MB in the beginning and 473.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:32:03,227 INFO L158 Benchmark]: Boogie Preprocessor took 31.43ms. Allocated memory is still 507.5MB. Free memory was 473.0MB in the beginning and 471.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:32:03,227 INFO L158 Benchmark]: RCFGBuilder took 479.65ms. Allocated memory is still 507.5MB. Free memory was 471.7MB in the beginning and 447.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-19 07:32:03,227 INFO L158 Benchmark]: TraceAbstraction took 712914.44ms. Allocated memory was 507.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 446.8MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2022-01-19 07:32:03,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 411.0MB. Free memory is still 370.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 277.39ms. Allocated memory was 411.0MB in the beginning and 507.5MB in the end (delta: 96.5MB). Free memory was 353.7MB in the beginning and 476.2MB in the end (delta: -122.4MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.37ms. Allocated memory is still 507.5MB. Free memory was 475.1MB in the beginning and 473.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.43ms. Allocated memory is still 507.5MB. Free memory was 473.0MB in the beginning and 471.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 479.65ms. Allocated memory is still 507.5MB. Free memory was 471.7MB in the beginning and 447.8MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 712914.44ms. Allocated memory was 507.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 446.8MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 36 known predicates. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 36 known predicates. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 36 known predicates. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 214 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 36 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 411 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 712.7s, OverallIterations: 70, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 692.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9625 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9625 mSDsluCounter, 12831 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13769 mSDsCounter, 356 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17409 IncrementalHoareTripleChecker+Invalid, 17765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 356 mSolverCounterUnsat, 2247 mSDtfsCounter, 17409 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3348 GetRequests, 2450 SyntacticMatches, 11 SemanticMatches, 887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6607 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4933occurred in iteration=64, InterpolantAutomatonStates: 725, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 14602 NumberOfCodeBlocks, 14570 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 15513 ConstructedInterpolants, 0 QuantifiedInterpolants, 50574 SizeOfPredicates, 106 NumberOfNonLiveVariables, 3059 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 81 InterpolantComputations, 69 PerfectInterpolantSequences, 9/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown