/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:15:59,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:15:59,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:16:00,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:16:00,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:16:00,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:16:00,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:16:00,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:16:00,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:16:00,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:16:00,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:16:00,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:16:00,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:16:00,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:16:00,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:16:00,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:16:00,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:16:00,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:16:00,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:16:00,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:16:00,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:16:00,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:16:00,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:16:00,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:16:00,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 13:16:00,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:16:00,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:16:00,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:16:00,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:16:00,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:16:00,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:16:00,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:16:00,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:16:00,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:16:00,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:16:00,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:16:00,087 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-After.epf [2022-01-19 13:16:00,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:16:00,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:16:00,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:16:00,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:16:00,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:16:00,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:16:00,125 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:16:00,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:16:00,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:16:00,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:16:00,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:16:00,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:16:00,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:16:00,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:16:00,128 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:16:00,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:16:00,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:16:00,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:16:00,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:16:00,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:16:00,341 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:16:00,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-01-19 13:16:00,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460f0eaa1/68afc43c7bb9431ab27aa3746289ac3e/FLAGa783e7814 [2022-01-19 13:16:00,736 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:16:00,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-01-19 13:16:00,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460f0eaa1/68afc43c7bb9431ab27aa3746289ac3e/FLAGa783e7814 [2022-01-19 13:16:00,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460f0eaa1/68afc43c7bb9431ab27aa3746289ac3e [2022-01-19 13:16:00,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:16:00,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:16:00,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:16:00,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:16:00,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:16:00,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:16:00" (1/1) ... [2022-01-19 13:16:00,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b5c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:00, skipping insertion in model container [2022-01-19 13:16:00,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:16:00" (1/1) ... [2022-01-19 13:16:00,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:16:00,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:16:00,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-01-19 13:16:00,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:16:00,970 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:16:00,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-01-19 13:16:00,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:16:01,000 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:16:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01 WrapperNode [2022-01-19 13:16:01,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:16:01,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:16:01,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:16:01,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:16:01,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,035 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2022-01-19 13:16:01,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:16:01,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:16:01,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:16:01,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:16:01,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:16:01,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:16:01,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:16:01,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:16:01,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (1/1) ... [2022-01-19 13:16:01,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:16:01,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:16:01,097 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 13:16:01,118 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 13:16:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:16:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:16:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:16:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:16:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:16:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:16:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:16:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:16:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:16:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:16:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:16:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:16:01,137 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 13:16:01,229 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:16:01,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:16:01,483 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:16:01,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:16:01,494 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:16:01,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:16:01 BoogieIcfgContainer [2022-01-19 13:16:01,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:16:01,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:16:01,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:16:01,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:16:01,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:16:00" (1/3) ... [2022-01-19 13:16:01,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711bb382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:16:01, skipping insertion in model container [2022-01-19 13:16:01,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:16:01" (2/3) ... [2022-01-19 13:16:01,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711bb382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:16:01, skipping insertion in model container [2022-01-19 13:16:01,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:16:01" (3/3) ... [2022-01-19 13:16:01,502 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-01-19 13:16:01,506 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:16:01,507 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:16:01,507 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:16:01,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,558 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,559 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,560 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,561 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,562 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,563 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,564 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,565 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,566 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,567 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,568 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,569 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,574 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,575 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,576 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,577 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,578 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,578 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,578 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,578 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,579 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,580 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,581 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,582 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,583 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,584 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,585 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,586 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,587 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,588 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,589 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,590 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,591 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,592 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,593 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,594 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,595 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,598 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,599 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,601 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,602 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,603 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:16:01,606 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 13:16:01,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:16:01,651 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 13:16:01,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 13:16:01,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2022-01-19 13:16:01,716 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2022-01-19 13:16:01,717 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:16:01,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 289 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 13:16:01,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2022-01-19 13:16:01,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2022-01-19 13:16:01,768 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2022-01-19 13:16:01,769 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 13:16:01,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:01,770 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] [2022-01-19 13:16:01,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1782218821, now seen corresponding path program 1 times [2022-01-19 13:16:01,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:01,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824563139] [2022-01-19 13:16:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:01,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:02,346 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 13:16:02,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824563139] [2022-01-19 13:16:02,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824563139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:02,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:02,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:02,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572070834] [2022-01-19 13:16:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:02,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:02,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:02,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:02,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:02,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:02,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:02,918 INFO L129 PetriNetUnfolder]: 107/482 cut-off events. [2022-01-19 13:16:02,918 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-01-19 13:16:02,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 482 events. 107/482 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2371 event pairs, 35 based on Foata normal form. 26/479 useless extension candidates. Maximal degree in co-relation 568. Up to 123 conditions per place. [2022-01-19 13:16:02,926 INFO L132 encePairwiseOnDemand]: 155/176 looper letters, 81 selfloop transitions, 5 changer transitions 44/253 dead transitions. [2022-01-19 13:16:02,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 808 flow [2022-01-19 13:16:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 13:16:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 13:16:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3478 transitions. [2022-01-19 13:16:02,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904545454545454 [2022-01-19 13:16:02,954 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3478 transitions. [2022-01-19 13:16:02,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3478 transitions. [2022-01-19 13:16:02,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:02,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3478 transitions. [2022-01-19 13:16:02,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 139.12) internal successors, (3478), 25 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:02,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:02,989 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:02,991 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 25 states and 3478 transitions. [2022-01-19 13:16:02,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 808 flow [2022-01-19 13:16:02,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 253 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 13:16:03,003 INFO L242 Difference]: Finished difference. Result has 201 places, 159 transitions, 405 flow [2022-01-19 13:16:03,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=405, PETRI_PLACES=201, PETRI_TRANSITIONS=159} [2022-01-19 13:16:03,010 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2022-01-19 13:16:03,010 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 405 flow [2022-01-19 13:16:03,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:03,012 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] [2022-01-19 13:16:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:16:03,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 346921447, now seen corresponding path program 1 times [2022-01-19 13:16:03,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:03,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473754817] [2022-01-19 13:16:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:03,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:03,091 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 13:16:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473754817] [2022-01-19 13:16:03,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473754817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:03,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:03,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:16:03,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235486289] [2022-01-19 13:16:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:03,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:16:03,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:16:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:16:03,100 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 13:16:03,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 159 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:03,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 13:16:03,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:03,216 INFO L129 PetriNetUnfolder]: 59/602 cut-off events. [2022-01-19 13:16:03,217 INFO L130 PetriNetUnfolder]: For 894/932 co-relation queries the response was YES. [2022-01-19 13:16:03,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 602 events. 59/602 cut-off events. For 894/932 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3216 event pairs, 30 based on Foata normal form. 4/547 useless extension candidates. Maximal degree in co-relation 1109. Up to 42 conditions per place. [2022-01-19 13:16:03,224 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2022-01-19 13:16:03,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 456 flow [2022-01-19 13:16:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:16:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:16:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 13:16:03,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 13:16:03,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,231 INFO L186 Difference]: Start difference. First operand has 201 places, 159 transitions, 405 flow. Second operand 3 states and 489 transitions. [2022-01-19 13:16:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 456 flow [2022-01-19 13:16:03,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 437 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 13:16:03,245 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 424 flow [2022-01-19 13:16:03,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2022-01-19 13:16:03,246 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-01-19 13:16:03,246 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 424 flow [2022-01-19 13:16:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:03,247 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] [2022-01-19 13:16:03,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:16:03,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash -250466245, now seen corresponding path program 2 times [2022-01-19 13:16:03,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:03,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094616104] [2022-01-19 13:16:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:03,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:03,326 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 13:16:03,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:03,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094616104] [2022-01-19 13:16:03,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094616104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:03,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:03,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:16:03,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948475649] [2022-01-19 13:16:03,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:03,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:16:03,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:03,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:16:03,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:16:03,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 13:16:03,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:03,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 13:16:03,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:03,411 INFO L129 PetriNetUnfolder]: 38/491 cut-off events. [2022-01-19 13:16:03,411 INFO L130 PetriNetUnfolder]: For 415/432 co-relation queries the response was YES. [2022-01-19 13:16:03,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 491 events. 38/491 cut-off events. For 415/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2367 event pairs, 25 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 582. Up to 26 conditions per place. [2022-01-19 13:16:03,415 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/168 dead transitions. [2022-01-19 13:16:03,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 487 flow [2022-01-19 13:16:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:16:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:16:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 13:16:03,418 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 13:16:03,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:03,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 13:16:03,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,421 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 424 flow. Second operand 3 states and 489 transitions. [2022-01-19 13:16:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 487 flow [2022-01-19 13:16:03,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:16:03,456 INFO L242 Difference]: Finished difference. Result has 176 places, 163 transitions, 446 flow [2022-01-19 13:16:03,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2022-01-19 13:16:03,457 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-01-19 13:16:03,457 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 446 flow [2022-01-19 13:16:03,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:03,458 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] [2022-01-19 13:16:03,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:16:03,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1510269733, now seen corresponding path program 1 times [2022-01-19 13:16:03,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:03,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326494881] [2022-01-19 13:16:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:03,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:03,576 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 13:16:03,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326494881] [2022-01-19 13:16:03,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326494881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:03,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:03,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:03,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489080966] [2022-01-19 13:16:03,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:03,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:03,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:03,584 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:03,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:03,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:03,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:03,896 INFO L129 PetriNetUnfolder]: 189/899 cut-off events. [2022-01-19 13:16:03,896 INFO L130 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2022-01-19 13:16:03,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 899 events. 189/899 cut-off events. For 1062/1086 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5534 event pairs, 53 based on Foata normal form. 5/857 useless extension candidates. Maximal degree in co-relation 1516. Up to 180 conditions per place. [2022-01-19 13:16:03,905 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 72 selfloop transitions, 22 changer transitions 34/256 dead transitions. [2022-01-19 13:16:03,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 1069 flow [2022-01-19 13:16:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:16:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:16:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2251 transitions. [2022-01-19 13:16:03,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7993607954545454 [2022-01-19 13:16:03,911 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2251 transitions. [2022-01-19 13:16:03,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2251 transitions. [2022-01-19 13:16:03,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:03,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2251 transitions. [2022-01-19 13:16:03,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.6875) internal successors, (2251), 16 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,922 INFO L186 Difference]: Start difference. First operand has 176 places, 163 transitions, 446 flow. Second operand 16 states and 2251 transitions. [2022-01-19 13:16:03,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 256 transitions, 1069 flow [2022-01-19 13:16:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 1060 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 13:16:03,931 INFO L242 Difference]: Finished difference. Result has 200 places, 184 transitions, 670 flow [2022-01-19 13:16:03,931 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=200, PETRI_TRANSITIONS=184} [2022-01-19 13:16:03,932 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2022-01-19 13:16:03,932 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 670 flow [2022-01-19 13:16:03,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:03,933 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] [2022-01-19 13:16:03,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:16:03,933 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1403497175, now seen corresponding path program 1 times [2022-01-19 13:16:03,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:03,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312333641] [2022-01-19 13:16:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:03,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:03,964 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 13:16:03,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:03,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312333641] [2022-01-19 13:16:03,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312333641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:03,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:03,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:16:03,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857641443] [2022-01-19 13:16:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:03,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:16:03,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:16:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:16:03,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 13:16:03,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 184 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:03,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:03,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 13:16:03,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:04,078 INFO L129 PetriNetUnfolder]: 91/893 cut-off events. [2022-01-19 13:16:04,078 INFO L130 PetriNetUnfolder]: For 1700/1718 co-relation queries the response was YES. [2022-01-19 13:16:04,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 893 events. 91/893 cut-off events. For 1700/1718 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5773 event pairs, 46 based on Foata normal form. 4/855 useless extension candidates. Maximal degree in co-relation 2080. Up to 77 conditions per place. [2022-01-19 13:16:04,086 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 12 selfloop transitions, 5 changer transitions 2/190 dead transitions. [2022-01-19 13:16:04,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 721 flow [2022-01-19 13:16:04,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:16:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:16:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 13:16:04,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 13:16:04,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:04,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,091 INFO L186 Difference]: Start difference. First operand has 200 places, 184 transitions, 670 flow. Second operand 3 states and 489 transitions. [2022-01-19 13:16:04,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 721 flow [2022-01-19 13:16:04,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 671 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-01-19 13:16:04,106 INFO L242 Difference]: Finished difference. Result has 193 places, 185 transitions, 648 flow [2022-01-19 13:16:04,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=193, PETRI_TRANSITIONS=185} [2022-01-19 13:16:04,107 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2022-01-19 13:16:04,107 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 648 flow [2022-01-19 13:16:04,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:04,108 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] [2022-01-19 13:16:04,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:16:04,108 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash -749552169, now seen corresponding path program 2 times [2022-01-19 13:16:04,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:04,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312713826] [2022-01-19 13:16:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:04,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:04,228 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 13:16:04,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:04,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312713826] [2022-01-19 13:16:04,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312713826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:04,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:04,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:04,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004597988] [2022-01-19 13:16:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:04,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:04,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:04,233 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:04,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 185 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:04,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:04,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:04,729 INFO L129 PetriNetUnfolder]: 220/1325 cut-off events. [2022-01-19 13:16:04,729 INFO L130 PetriNetUnfolder]: For 2111/2120 co-relation queries the response was YES. [2022-01-19 13:16:04,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 1325 events. 220/1325 cut-off events. For 2111/2120 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9458 event pairs, 109 based on Foata normal form. 2/1276 useless extension candidates. Maximal degree in co-relation 2865. Up to 437 conditions per place. [2022-01-19 13:16:04,740 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 116 selfloop transitions, 6 changer transitions 41/293 dead transitions. [2022-01-19 13:16:04,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 1586 flow [2022-01-19 13:16:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:16:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:16:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3313 transitions. [2022-01-19 13:16:04,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843276515151515 [2022-01-19 13:16:04,749 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3313 transitions. [2022-01-19 13:16:04,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3313 transitions. [2022-01-19 13:16:04,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:04,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3313 transitions. [2022-01-19 13:16:04,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.04166666666666) internal successors, (3313), 24 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,767 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,767 INFO L186 Difference]: Start difference. First operand has 193 places, 185 transitions, 648 flow. Second operand 24 states and 3313 transitions. [2022-01-19 13:16:04,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 1586 flow [2022-01-19 13:16:04,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 1576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:16:04,786 INFO L242 Difference]: Finished difference. Result has 235 places, 189 transitions, 754 flow [2022-01-19 13:16:04,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=754, PETRI_PLACES=235, PETRI_TRANSITIONS=189} [2022-01-19 13:16:04,789 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2022-01-19 13:16:04,789 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 754 flow [2022-01-19 13:16:04,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:04,791 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] [2022-01-19 13:16:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:16:04,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -26456751, now seen corresponding path program 1 times [2022-01-19 13:16:04,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643805901] [2022-01-19 13:16:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:04,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:04,822 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 13:16:04,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643805901] [2022-01-19 13:16:04,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643805901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:04,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:04,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:16:04,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184494797] [2022-01-19 13:16:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:04,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:16:04,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:16:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:16:04,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2022-01-19 13:16:04,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 189 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:04,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2022-01-19 13:16:04,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:04,928 INFO L129 PetriNetUnfolder]: 39/587 cut-off events. [2022-01-19 13:16:04,928 INFO L130 PetriNetUnfolder]: For 1478/1535 co-relation queries the response was YES. [2022-01-19 13:16:04,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 587 events. 39/587 cut-off events. For 1478/1535 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3245 event pairs, 24 based on Foata normal form. 10/571 useless extension candidates. Maximal degree in co-relation 1339. Up to 44 conditions per place. [2022-01-19 13:16:04,934 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 16 selfloop transitions, 3 changer transitions 12/185 dead transitions. [2022-01-19 13:16:04,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 746 flow [2022-01-19 13:16:04,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:16:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:16:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2022-01-19 13:16:04,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2022-01-19 13:16:04,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:04,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2022-01-19 13:16:04,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,940 INFO L186 Difference]: Start difference. First operand has 235 places, 189 transitions, 754 flow. Second operand 3 states and 489 transitions. [2022-01-19 13:16:04,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 746 flow [2022-01-19 13:16:04,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 185 transitions, 679 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-01-19 13:16:04,952 INFO L242 Difference]: Finished difference. Result has 207 places, 170 transitions, 586 flow [2022-01-19 13:16:04,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=207, PETRI_TRANSITIONS=170} [2022-01-19 13:16:04,954 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 48 predicate places. [2022-01-19 13:16:04,954 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 170 transitions, 586 flow [2022-01-19 13:16:04,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:04,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:04,955 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] [2022-01-19 13:16:04,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:16:04,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1239491335, now seen corresponding path program 1 times [2022-01-19 13:16:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:04,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504423985] [2022-01-19 13:16:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:04,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:05,084 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 13:16:05,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:05,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504423985] [2022-01-19 13:16:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504423985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:05,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:05,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:05,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66194242] [2022-01-19 13:16:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:05,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:05,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:05,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:05,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:05,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 170 transitions, 586 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:05,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:05,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:05,451 INFO L129 PetriNetUnfolder]: 119/762 cut-off events. [2022-01-19 13:16:05,452 INFO L130 PetriNetUnfolder]: For 1968/1985 co-relation queries the response was YES. [2022-01-19 13:16:05,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 762 events. 119/762 cut-off events. For 1968/1985 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4413 event pairs, 55 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 1771. Up to 200 conditions per place. [2022-01-19 13:16:05,459 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 6 changer transitions 37/250 dead transitions. [2022-01-19 13:16:05,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 250 transitions, 1290 flow [2022-01-19 13:16:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:16:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:16:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3303 transitions. [2022-01-19 13:16:05,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819602272727273 [2022-01-19 13:16:05,467 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3303 transitions. [2022-01-19 13:16:05,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3303 transitions. [2022-01-19 13:16:05,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:05,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3303 transitions. [2022-01-19 13:16:05,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.625) internal successors, (3303), 24 states have internal predecessors, (3303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,484 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,484 INFO L186 Difference]: Start difference. First operand has 207 places, 170 transitions, 586 flow. Second operand 24 states and 3303 transitions. [2022-01-19 13:16:05,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 250 transitions, 1290 flow [2022-01-19 13:16:05,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 250 transitions, 1133 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 13:16:05,498 INFO L242 Difference]: Finished difference. Result has 232 places, 175 transitions, 665 flow [2022-01-19 13:16:05,498 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=665, PETRI_PLACES=232, PETRI_TRANSITIONS=175} [2022-01-19 13:16:05,501 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2022-01-19 13:16:05,501 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 665 flow [2022-01-19 13:16:05,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:05,514 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] [2022-01-19 13:16:05,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:16:05,514 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash 633918351, now seen corresponding path program 3 times [2022-01-19 13:16:05,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:05,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719228784] [2022-01-19 13:16:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:05,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:05,679 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 13:16:05,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719228784] [2022-01-19 13:16:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719228784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:05,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:05,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:05,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814987068] [2022-01-19 13:16:05,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:05,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:05,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:05,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 175 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:05,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:05,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:05,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:05,960 INFO L129 PetriNetUnfolder]: 127/787 cut-off events. [2022-01-19 13:16:05,961 INFO L130 PetriNetUnfolder]: For 2110/2133 co-relation queries the response was YES. [2022-01-19 13:16:05,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 787 events. 127/787 cut-off events. For 2110/2133 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4612 event pairs, 68 based on Foata normal form. 9/760 useless extension candidates. Maximal degree in co-relation 2260. Up to 239 conditions per place. [2022-01-19 13:16:05,969 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 16 changer transitions 25/231 dead transitions. [2022-01-19 13:16:05,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1206 flow [2022-01-19 13:16:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2022-01-19 13:16:06,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2022-01-19 13:16:06,012 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2022-01-19 13:16:06,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2022-01-19 13:16:06,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:06,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2022-01-19 13:16:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,021 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,021 INFO L186 Difference]: Start difference. First operand has 232 places, 175 transitions, 665 flow. Second operand 17 states and 2347 transitions. [2022-01-19 13:16:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1206 flow [2022-01-19 13:16:06,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 1163 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-01-19 13:16:06,035 INFO L242 Difference]: Finished difference. Result has 231 places, 190 transitions, 817 flow [2022-01-19 13:16:06,035 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=817, PETRI_PLACES=231, PETRI_TRANSITIONS=190} [2022-01-19 13:16:06,036 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2022-01-19 13:16:06,036 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 190 transitions, 817 flow [2022-01-19 13:16:06,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:06,037 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] [2022-01-19 13:16:06,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:16:06,037 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:06,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1319299375, now seen corresponding path program 2 times [2022-01-19 13:16:06,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:06,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233210491] [2022-01-19 13:16:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:06,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:06,137 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 13:16:06,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:06,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233210491] [2022-01-19 13:16:06,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233210491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:06,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:06,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:06,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120146746] [2022-01-19 13:16:06,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:06,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:06,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:06,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:06,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:06,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 190 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:06,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:06,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:06,442 INFO L129 PetriNetUnfolder]: 173/899 cut-off events. [2022-01-19 13:16:06,442 INFO L130 PetriNetUnfolder]: For 2352/2367 co-relation queries the response was YES. [2022-01-19 13:16:06,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 899 events. 173/899 cut-off events. For 2352/2367 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 79 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 2845. Up to 281 conditions per place. [2022-01-19 13:16:06,452 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 16 changer transitions 23/250 dead transitions. [2022-01-19 13:16:06,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 250 transitions, 1533 flow [2022-01-19 13:16:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2346 transitions. [2022-01-19 13:16:06,456 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2022-01-19 13:16:06,456 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2346 transitions. [2022-01-19 13:16:06,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2346 transitions. [2022-01-19 13:16:06,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:06,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2346 transitions. [2022-01-19 13:16:06,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,464 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,464 INFO L186 Difference]: Start difference. First operand has 231 places, 190 transitions, 817 flow. Second operand 17 states and 2346 transitions. [2022-01-19 13:16:06,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 250 transitions, 1533 flow [2022-01-19 13:16:06,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 250 transitions, 1506 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-01-19 13:16:06,480 INFO L242 Difference]: Finished difference. Result has 241 places, 208 transitions, 1049 flow [2022-01-19 13:16:06,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1049, PETRI_PLACES=241, PETRI_TRANSITIONS=208} [2022-01-19 13:16:06,481 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 82 predicate places. [2022-01-19 13:16:06,481 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 1049 flow [2022-01-19 13:16:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:06,482 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] [2022-01-19 13:16:06,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:16:06,482 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:06,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash -321024153, now seen corresponding path program 3 times [2022-01-19 13:16:06,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:06,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179781815] [2022-01-19 13:16:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:06,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:06,584 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 13:16:06,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:06,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179781815] [2022-01-19 13:16:06,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179781815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:06,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:06,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:06,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971112388] [2022-01-19 13:16:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:06,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:06,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:06,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:06,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 208 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:06,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:06,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:06,867 INFO L129 PetriNetUnfolder]: 179/902 cut-off events. [2022-01-19 13:16:06,867 INFO L130 PetriNetUnfolder]: For 3247/3265 co-relation queries the response was YES. [2022-01-19 13:16:06,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 902 events. 179/902 cut-off events. For 3247/3265 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5318 event pairs, 71 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 3148. Up to 292 conditions per place. [2022-01-19 13:16:06,877 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 21 changer transitions 20/257 dead transitions. [2022-01-19 13:16:06,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 257 transitions, 1817 flow [2022-01-19 13:16:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:16:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:16:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2205 transitions. [2022-01-19 13:16:06,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830255681818182 [2022-01-19 13:16:06,881 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2205 transitions. [2022-01-19 13:16:06,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2205 transitions. [2022-01-19 13:16:06,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:06,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2205 transitions. [2022-01-19 13:16:06,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.8125) internal successors, (2205), 16 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,887 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,888 INFO L186 Difference]: Start difference. First operand has 241 places, 208 transitions, 1049 flow. Second operand 16 states and 2205 transitions. [2022-01-19 13:16:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 257 transitions, 1817 flow [2022-01-19 13:16:06,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 257 transitions, 1622 flow, removed 95 selfloop flow, removed 6 redundant places. [2022-01-19 13:16:06,910 INFO L242 Difference]: Finished difference. Result has 253 places, 218 transitions, 1159 flow [2022-01-19 13:16:06,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1159, PETRI_PLACES=253, PETRI_TRANSITIONS=218} [2022-01-19 13:16:06,911 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 13:16:06,911 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 1159 flow [2022-01-19 13:16:06,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:06,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:06,912 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] [2022-01-19 13:16:06,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:16:06,912 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2134941247, now seen corresponding path program 4 times [2022-01-19 13:16:06,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013154196] [2022-01-19 13:16:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:07,028 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 13:16:07,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013154196] [2022-01-19 13:16:07,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013154196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:07,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:07,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:07,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725972813] [2022-01-19 13:16:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:07,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:07,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:07,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:07,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 218 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:07,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:07,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:07,385 INFO L129 PetriNetUnfolder]: 186/921 cut-off events. [2022-01-19 13:16:07,385 INFO L130 PetriNetUnfolder]: For 3368/3389 co-relation queries the response was YES. [2022-01-19 13:16:07,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 921 events. 186/921 cut-off events. For 3368/3389 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5471 event pairs, 80 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 3258. Up to 294 conditions per place. [2022-01-19 13:16:07,396 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 24 changer transitions 21/266 dead transitions. [2022-01-19 13:16:07,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 266 transitions, 1958 flow [2022-01-19 13:16:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2344 transitions. [2022-01-19 13:16:07,399 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7834224598930482 [2022-01-19 13:16:07,399 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2344 transitions. [2022-01-19 13:16:07,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2344 transitions. [2022-01-19 13:16:07,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:07,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2344 transitions. [2022-01-19 13:16:07,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.88235294117646) internal successors, (2344), 17 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,406 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,406 INFO L186 Difference]: Start difference. First operand has 253 places, 218 transitions, 1159 flow. Second operand 17 states and 2344 transitions. [2022-01-19 13:16:07,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 266 transitions, 1958 flow [2022-01-19 13:16:07,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 266 transitions, 1817 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-01-19 13:16:07,431 INFO L242 Difference]: Finished difference. Result has 266 places, 231 transitions, 1333 flow [2022-01-19 13:16:07,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1333, PETRI_PLACES=266, PETRI_TRANSITIONS=231} [2022-01-19 13:16:07,432 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 107 predicate places. [2022-01-19 13:16:07,432 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 1333 flow [2022-01-19 13:16:07,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:07,433 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] [2022-01-19 13:16:07,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:16:07,433 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash -845261417, now seen corresponding path program 5 times [2022-01-19 13:16:07,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:07,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614837662] [2022-01-19 13:16:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:07,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:07,568 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 13:16:07,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614837662] [2022-01-19 13:16:07,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614837662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:07,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:07,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:07,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330806994] [2022-01-19 13:16:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:07,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:07,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:07,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:07,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 231 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:07,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:07,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:07,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:07,974 INFO L129 PetriNetUnfolder]: 185/923 cut-off events. [2022-01-19 13:16:07,975 INFO L130 PetriNetUnfolder]: For 4086/4110 co-relation queries the response was YES. [2022-01-19 13:16:07,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 923 events. 185/923 cut-off events. For 4086/4110 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5529 event pairs, 71 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 3411. Up to 247 conditions per place. [2022-01-19 13:16:07,986 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 110 selfloop transitions, 27 changer transitions 35/307 dead transitions. [2022-01-19 13:16:07,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 307 transitions, 2431 flow [2022-01-19 13:16:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 13:16:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 13:16:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3299 transitions. [2022-01-19 13:16:07,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810132575757576 [2022-01-19 13:16:07,991 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3299 transitions. [2022-01-19 13:16:07,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3299 transitions. [2022-01-19 13:16:07,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:07,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3299 transitions. [2022-01-19 13:16:07,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.45833333333334) internal successors, (3299), 24 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,002 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,002 INFO L186 Difference]: Start difference. First operand has 266 places, 231 transitions, 1333 flow. Second operand 24 states and 3299 transitions. [2022-01-19 13:16:08,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 307 transitions, 2431 flow [2022-01-19 13:16:08,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 307 transitions, 2298 flow, removed 64 selfloop flow, removed 7 redundant places. [2022-01-19 13:16:08,033 INFO L242 Difference]: Finished difference. Result has 293 places, 233 transitions, 1401 flow [2022-01-19 13:16:08,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1401, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2022-01-19 13:16:08,034 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2022-01-19 13:16:08,034 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 1401 flow [2022-01-19 13:16:08,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:08,035 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] [2022-01-19 13:16:08,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:16:08,035 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2022-01-19 13:16:08,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101438416] [2022-01-19 13:16:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:08,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:08,126 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 13:16:08,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101438416] [2022-01-19 13:16:08,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101438416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:08,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:08,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:08,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653967335] [2022-01-19 13:16:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:08,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:08,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:08,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:08,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:08,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:08,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:08,550 INFO L129 PetriNetUnfolder]: 192/966 cut-off events. [2022-01-19 13:16:08,550 INFO L130 PetriNetUnfolder]: For 5157/5179 co-relation queries the response was YES. [2022-01-19 13:16:08,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 966 events. 192/966 cut-off events. For 5157/5179 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5969 event pairs, 75 based on Foata normal form. 6/938 useless extension candidates. Maximal degree in co-relation 3753. Up to 297 conditions per place. [2022-01-19 13:16:08,563 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 26 changer transitions 29/284 dead transitions. [2022-01-19 13:16:08,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 284 transitions, 2264 flow [2022-01-19 13:16:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:16:08,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:16:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2022-01-19 13:16:08,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7789256198347108 [2022-01-19 13:16:08,567 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2022-01-19 13:16:08,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2022-01-19 13:16:08,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:08,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2022-01-19 13:16:08,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,578 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,578 INFO L186 Difference]: Start difference. First operand has 293 places, 233 transitions, 1401 flow. Second operand 22 states and 3016 transitions. [2022-01-19 13:16:08,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 284 transitions, 2264 flow [2022-01-19 13:16:08,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 2175 flow, removed 37 selfloop flow, removed 17 redundant places. [2022-01-19 13:16:08,612 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 1502 flow [2022-01-19 13:16:08,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1502, PETRI_PLACES=295, PETRI_TRANSITIONS=237} [2022-01-19 13:16:08,613 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 136 predicate places. [2022-01-19 13:16:08,614 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 1502 flow [2022-01-19 13:16:08,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:08,614 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] [2022-01-19 13:16:08,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:16:08,614 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2046587005, now seen corresponding path program 7 times [2022-01-19 13:16:08,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143804839] [2022-01-19 13:16:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:08,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:08,729 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 13:16:08,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143804839] [2022-01-19 13:16:08,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143804839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:08,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:08,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:08,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241832277] [2022-01-19 13:16:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:08,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:08,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:08,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:08,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 237 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:08,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:08,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:08,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:09,137 INFO L129 PetriNetUnfolder]: 192/992 cut-off events. [2022-01-19 13:16:09,138 INFO L130 PetriNetUnfolder]: For 5311/5336 co-relation queries the response was YES. [2022-01-19 13:16:09,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 992 events. 192/992 cut-off events. For 5311/5336 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6256 event pairs, 84 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 3861. Up to 301 conditions per place. [2022-01-19 13:16:09,151 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 98 selfloop transitions, 27 changer transitions 28/288 dead transitions. [2022-01-19 13:16:09,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 288 transitions, 2522 flow [2022-01-19 13:16:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:16:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:16:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2888 transitions. [2022-01-19 13:16:09,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813852813852814 [2022-01-19 13:16:09,155 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2888 transitions. [2022-01-19 13:16:09,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2888 transitions. [2022-01-19 13:16:09,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:09,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2888 transitions. [2022-01-19 13:16:09,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.52380952380952) internal successors, (2888), 21 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,164 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,165 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 1502 flow. Second operand 21 states and 2888 transitions. [2022-01-19 13:16:09,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 288 transitions, 2522 flow [2022-01-19 13:16:09,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 288 transitions, 2385 flow, removed 54 selfloop flow, removed 13 redundant places. [2022-01-19 13:16:09,202 INFO L242 Difference]: Finished difference. Result has 304 places, 245 transitions, 1707 flow [2022-01-19 13:16:09,203 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1707, PETRI_PLACES=304, PETRI_TRANSITIONS=245} [2022-01-19 13:16:09,203 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 145 predicate places. [2022-01-19 13:16:09,203 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 245 transitions, 1707 flow [2022-01-19 13:16:09,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:09,204 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] [2022-01-19 13:16:09,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:16:09,204 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 827566539, now seen corresponding path program 8 times [2022-01-19 13:16:09,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:09,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789072228] [2022-01-19 13:16:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:09,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:09,310 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 13:16:09,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:09,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789072228] [2022-01-19 13:16:09,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789072228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:09,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:09,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:09,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598940543] [2022-01-19 13:16:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:09,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:09,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:09,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:09,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 245 transitions, 1707 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:09,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:09,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:09,705 INFO L129 PetriNetUnfolder]: 189/1013 cut-off events. [2022-01-19 13:16:09,705 INFO L130 PetriNetUnfolder]: For 6311/6336 co-relation queries the response was YES. [2022-01-19 13:16:09,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 1013 events. 189/1013 cut-off events. For 6311/6336 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6568 event pairs, 88 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 4043. Up to 318 conditions per place. [2022-01-19 13:16:09,747 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 91 selfloop transitions, 31 changer transitions 30/287 dead transitions. [2022-01-19 13:16:09,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 287 transitions, 2659 flow [2022-01-19 13:16:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:16:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:16:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2748 transitions. [2022-01-19 13:16:09,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806818181818181 [2022-01-19 13:16:09,757 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2748 transitions. [2022-01-19 13:16:09,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2748 transitions. [2022-01-19 13:16:09,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:09,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2748 transitions. [2022-01-19 13:16:09,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.4) internal successors, (2748), 20 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,770 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,770 INFO L186 Difference]: Start difference. First operand has 304 places, 245 transitions, 1707 flow. Second operand 20 states and 2748 transitions. [2022-01-19 13:16:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 287 transitions, 2659 flow [2022-01-19 13:16:09,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 287 transitions, 2489 flow, removed 69 selfloop flow, removed 13 redundant places. [2022-01-19 13:16:09,818 INFO L242 Difference]: Finished difference. Result has 310 places, 249 transitions, 1795 flow [2022-01-19 13:16:09,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1795, PETRI_PLACES=310, PETRI_TRANSITIONS=249} [2022-01-19 13:16:09,819 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 151 predicate places. [2022-01-19 13:16:09,819 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 249 transitions, 1795 flow [2022-01-19 13:16:09,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:09,820 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] [2022-01-19 13:16:09,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:16:09,820 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash 708724587, now seen corresponding path program 9 times [2022-01-19 13:16:09,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:09,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249116862] [2022-01-19 13:16:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:09,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:09,931 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 13:16:09,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:09,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249116862] [2022-01-19 13:16:09,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249116862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:09,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:09,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:09,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958631662] [2022-01-19 13:16:09,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:09,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:09,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:09,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:09,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:09,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 249 transitions, 1795 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:09,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:09,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:09,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:10,337 INFO L129 PetriNetUnfolder]: 174/950 cut-off events. [2022-01-19 13:16:10,337 INFO L130 PetriNetUnfolder]: For 5200/5229 co-relation queries the response was YES. [2022-01-19 13:16:10,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 950 events. 174/950 cut-off events. For 5200/5229 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5975 event pairs, 71 based on Foata normal form. 10/927 useless extension candidates. Maximal degree in co-relation 3679. Up to 304 conditions per place. [2022-01-19 13:16:10,352 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 92 selfloop transitions, 19 changer transitions 30/276 dead transitions. [2022-01-19 13:16:10,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 276 transitions, 2382 flow [2022-01-19 13:16:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-01-19 13:16:10,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2022-01-19 13:16:10,356 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2022-01-19 13:16:10,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2022-01-19 13:16:10,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:10,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2022-01-19 13:16:10,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,367 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,368 INFO L186 Difference]: Start difference. First operand has 310 places, 249 transitions, 1795 flow. Second operand 18 states and 2468 transitions. [2022-01-19 13:16:10,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 276 transitions, 2382 flow [2022-01-19 13:16:10,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 276 transitions, 2273 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-01-19 13:16:10,411 INFO L242 Difference]: Finished difference. Result has 308 places, 234 transitions, 1537 flow [2022-01-19 13:16:10,411 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1537, PETRI_PLACES=308, PETRI_TRANSITIONS=234} [2022-01-19 13:16:10,412 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 149 predicate places. [2022-01-19 13:16:10,412 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 234 transitions, 1537 flow [2022-01-19 13:16:10,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:10,413 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] [2022-01-19 13:16:10,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:16:10,413 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1863994139, now seen corresponding path program 10 times [2022-01-19 13:16:10,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:10,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645174853] [2022-01-19 13:16:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:10,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:10,521 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 13:16:10,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:10,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645174853] [2022-01-19 13:16:10,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645174853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:10,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:10,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215205082] [2022-01-19 13:16:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:10,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:10,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:10,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:10,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 234 transitions, 1537 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:10,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:10,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:10,851 INFO L129 PetriNetUnfolder]: 167/932 cut-off events. [2022-01-19 13:16:10,851 INFO L130 PetriNetUnfolder]: For 4857/4875 co-relation queries the response was YES. [2022-01-19 13:16:10,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 932 events. 167/932 cut-off events. For 4857/4875 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5809 event pairs, 85 based on Foata normal form. 1/900 useless extension candidates. Maximal degree in co-relation 3586. Up to 300 conditions per place. [2022-01-19 13:16:10,863 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 16 changer transitions 25/256 dead transitions. [2022-01-19 13:16:10,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 256 transitions, 2066 flow [2022-01-19 13:16:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-01-19 13:16:10,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-01-19 13:16:10,867 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-01-19 13:16:10,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-01-19 13:16:10,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:10,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-01-19 13:16:10,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,876 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,876 INFO L186 Difference]: Start difference. First operand has 308 places, 234 transitions, 1537 flow. Second operand 18 states and 2471 transitions. [2022-01-19 13:16:10,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 256 transitions, 2066 flow [2022-01-19 13:16:10,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 256 transitions, 1937 flow, removed 23 selfloop flow, removed 18 redundant places. [2022-01-19 13:16:10,910 INFO L242 Difference]: Finished difference. Result has 292 places, 226 transitions, 1379 flow [2022-01-19 13:16:10,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1379, PETRI_PLACES=292, PETRI_TRANSITIONS=226} [2022-01-19 13:16:10,911 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-01-19 13:16:10,911 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 226 transitions, 1379 flow [2022-01-19 13:16:10,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:10,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:10,912 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] [2022-01-19 13:16:10,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 13:16:10,912 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:10,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1263072555, now seen corresponding path program 11 times [2022-01-19 13:16:10,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527428431] [2022-01-19 13:16:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:10,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:11,020 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 13:16:11,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:11,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527428431] [2022-01-19 13:16:11,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527428431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:11,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:11,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:11,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633689733] [2022-01-19 13:16:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:11,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:11,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:11,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:11,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 226 transitions, 1379 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:11,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:11,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:11,366 INFO L129 PetriNetUnfolder]: 163/924 cut-off events. [2022-01-19 13:16:11,366 INFO L130 PetriNetUnfolder]: For 4204/4222 co-relation queries the response was YES. [2022-01-19 13:16:11,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 924 events. 163/924 cut-off events. For 4204/4222 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5701 event pairs, 86 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 3462. Up to 300 conditions per place. [2022-01-19 13:16:11,376 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 21 changer transitions 26/257 dead transitions. [2022-01-19 13:16:11,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 257 transitions, 2082 flow [2022-01-19 13:16:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2022-01-19 13:16:11,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2022-01-19 13:16:11,379 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2022-01-19 13:16:11,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2022-01-19 13:16:11,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:11,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2022-01-19 13:16:11,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,387 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,387 INFO L186 Difference]: Start difference. First operand has 292 places, 226 transitions, 1379 flow. Second operand 17 states and 2339 transitions. [2022-01-19 13:16:11,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 257 transitions, 2082 flow [2022-01-19 13:16:11,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 257 transitions, 1937 flow, removed 38 selfloop flow, removed 16 redundant places. [2022-01-19 13:16:11,415 INFO L242 Difference]: Finished difference. Result has 283 places, 228 transitions, 1416 flow [2022-01-19 13:16:11,415 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1416, PETRI_PLACES=283, PETRI_TRANSITIONS=228} [2022-01-19 13:16:11,416 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2022-01-19 13:16:11,416 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 228 transitions, 1416 flow [2022-01-19 13:16:11,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:11,416 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] [2022-01-19 13:16:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 13:16:11,417 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -801537573, now seen corresponding path program 12 times [2022-01-19 13:16:11,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:11,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724456717] [2022-01-19 13:16:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:11,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:11,524 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 13:16:11,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:11,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724456717] [2022-01-19 13:16:11,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724456717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:11,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:11,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:11,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110921876] [2022-01-19 13:16:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:11,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:11,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:11,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:11,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:11,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:11,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 228 transitions, 1416 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:11,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:11,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:11,821 INFO L129 PetriNetUnfolder]: 150/865 cut-off events. [2022-01-19 13:16:11,821 INFO L130 PetriNetUnfolder]: For 3328/3346 co-relation queries the response was YES. [2022-01-19 13:16:11,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 865 events. 150/865 cut-off events. For 3328/3346 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5137 event pairs, 83 based on Foata normal form. 1/834 useless extension candidates. Maximal degree in co-relation 3085. Up to 287 conditions per place. [2022-01-19 13:16:11,831 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 5 changer transitions 31/241 dead transitions. [2022-01-19 13:16:11,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 1717 flow [2022-01-19 13:16:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2022-01-19 13:16:11,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2022-01-19 13:16:11,835 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2022-01-19 13:16:11,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2022-01-19 13:16:11,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:11,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2022-01-19 13:16:11,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.88888888888889) internal successors, (2464), 18 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,843 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,843 INFO L186 Difference]: Start difference. First operand has 283 places, 228 transitions, 1416 flow. Second operand 18 states and 2464 transitions. [2022-01-19 13:16:11,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 1717 flow [2022-01-19 13:16:11,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 241 transitions, 1619 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-01-19 13:16:11,870 INFO L242 Difference]: Finished difference. Result has 286 places, 208 transitions, 1081 flow [2022-01-19 13:16:11,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1081, PETRI_PLACES=286, PETRI_TRANSITIONS=208} [2022-01-19 13:16:11,871 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-01-19 13:16:11,871 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 208 transitions, 1081 flow [2022-01-19 13:16:11,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:11,871 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] [2022-01-19 13:16:11,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:16:11,872 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -836472735, now seen corresponding path program 13 times [2022-01-19 13:16:11,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189761891] [2022-01-19 13:16:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:11,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:11,977 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 13:16:11,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:11,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189761891] [2022-01-19 13:16:11,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189761891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:11,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:11,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:11,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290403641] [2022-01-19 13:16:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:11,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:11,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:11,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:11,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 208 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:11,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:11,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:11,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:12,316 INFO L129 PetriNetUnfolder]: 143/819 cut-off events. [2022-01-19 13:16:12,316 INFO L130 PetriNetUnfolder]: For 3088/3110 co-relation queries the response was YES. [2022-01-19 13:16:12,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 819 events. 143/819 cut-off events. For 3088/3110 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4743 event pairs, 65 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 2853. Up to 261 conditions per place. [2022-01-19 13:16:12,325 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 21 changer transitions 22/250 dead transitions. [2022-01-19 13:16:12,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 250 transitions, 1818 flow [2022-01-19 13:16:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:16:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:16:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2022-01-19 13:16:12,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2022-01-19 13:16:12,328 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2022-01-19 13:16:12,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2022-01-19 13:16:12,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:12,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2022-01-19 13:16:12,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,334 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,335 INFO L186 Difference]: Start difference. First operand has 286 places, 208 transitions, 1081 flow. Second operand 16 states and 2206 transitions. [2022-01-19 13:16:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 250 transitions, 1818 flow [2022-01-19 13:16:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 1601 flow, removed 61 selfloop flow, removed 22 redundant places. [2022-01-19 13:16:12,356 INFO L242 Difference]: Finished difference. Result has 261 places, 217 transitions, 1187 flow [2022-01-19 13:16:12,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1187, PETRI_PLACES=261, PETRI_TRANSITIONS=217} [2022-01-19 13:16:12,357 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2022-01-19 13:16:12,357 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 1187 flow [2022-01-19 13:16:12,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:12,357 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] [2022-01-19 13:16:12,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:16:12,358 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash -358241663, now seen corresponding path program 14 times [2022-01-19 13:16:12,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:12,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192395623] [2022-01-19 13:16:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:12,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:12,454 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 13:16:12,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192395623] [2022-01-19 13:16:12,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192395623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:12,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:12,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:12,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343022760] [2022-01-19 13:16:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:12,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:12,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:12,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:12,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 217 transitions, 1187 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:12,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:12,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:12,793 INFO L129 PetriNetUnfolder]: 142/826 cut-off events. [2022-01-19 13:16:12,793 INFO L130 PetriNetUnfolder]: For 2703/2718 co-relation queries the response was YES. [2022-01-19 13:16:12,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 826 events. 142/826 cut-off events. For 2703/2718 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4800 event pairs, 63 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 2824. Up to 261 conditions per place. [2022-01-19 13:16:12,802 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 23 changer transitions 28/262 dead transitions. [2022-01-19 13:16:12,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 262 transitions, 1945 flow [2022-01-19 13:16:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:16:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:16:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2022-01-19 13:16:12,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2022-01-19 13:16:12,805 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2745 transitions. [2022-01-19 13:16:12,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2745 transitions. [2022-01-19 13:16:12,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:12,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2745 transitions. [2022-01-19 13:16:12,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.25) internal successors, (2745), 20 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,812 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,812 INFO L186 Difference]: Start difference. First operand has 261 places, 217 transitions, 1187 flow. Second operand 20 states and 2745 transitions. [2022-01-19 13:16:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 262 transitions, 1945 flow [2022-01-19 13:16:12,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 1799 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-01-19 13:16:12,834 INFO L242 Difference]: Finished difference. Result has 280 places, 224 transitions, 1292 flow [2022-01-19 13:16:12,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1292, PETRI_PLACES=280, PETRI_TRANSITIONS=224} [2022-01-19 13:16:12,835 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-01-19 13:16:12,835 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 1292 flow [2022-01-19 13:16:12,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:12,836 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] [2022-01-19 13:16:12,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:16:12,836 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 149169609, now seen corresponding path program 15 times [2022-01-19 13:16:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764239932] [2022-01-19 13:16:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:12,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:12,937 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 13:16:12,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:12,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764239932] [2022-01-19 13:16:12,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764239932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:12,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:12,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:12,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526091653] [2022-01-19 13:16:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:12,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:12,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:12,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:12,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 224 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:12,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:12,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:12,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:13,305 INFO L129 PetriNetUnfolder]: 144/864 cut-off events. [2022-01-19 13:16:13,305 INFO L130 PetriNetUnfolder]: For 3273/3288 co-relation queries the response was YES. [2022-01-19 13:16:13,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 864 events. 144/864 cut-off events. For 3273/3288 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5194 event pairs, 66 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 3006. Up to 264 conditions per place. [2022-01-19 13:16:13,312 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 27 changer transitions 30/267 dead transitions. [2022-01-19 13:16:13,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 267 transitions, 2061 flow [2022-01-19 13:16:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:16:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:16:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3012 transitions. [2022-01-19 13:16:13,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7778925619834711 [2022-01-19 13:16:13,315 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3012 transitions. [2022-01-19 13:16:13,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3012 transitions. [2022-01-19 13:16:13,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:13,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3012 transitions. [2022-01-19 13:16:13,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.9090909090909) internal successors, (3012), 22 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,322 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,323 INFO L186 Difference]: Start difference. First operand has 280 places, 224 transitions, 1292 flow. Second operand 22 states and 3012 transitions. [2022-01-19 13:16:13,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 267 transitions, 2061 flow [2022-01-19 13:16:13,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 267 transitions, 1974 flow, removed 36 selfloop flow, removed 11 redundant places. [2022-01-19 13:16:13,349 INFO L242 Difference]: Finished difference. Result has 293 places, 229 transitions, 1409 flow [2022-01-19 13:16:13,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1409, PETRI_PLACES=293, PETRI_TRANSITIONS=229} [2022-01-19 13:16:13,349 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2022-01-19 13:16:13,350 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 229 transitions, 1409 flow [2022-01-19 13:16:13,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:13,350 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] [2022-01-19 13:16:13,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:16:13,350 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1681730419, now seen corresponding path program 16 times [2022-01-19 13:16:13,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:13,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727027447] [2022-01-19 13:16:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:13,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:13,434 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 13:16:13,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:13,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727027447] [2022-01-19 13:16:13,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727027447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:13,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:13,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:13,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918765267] [2022-01-19 13:16:13,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:13,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:13,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:13,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:13,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 229 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:13,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:13,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:13,754 INFO L129 PetriNetUnfolder]: 130/803 cut-off events. [2022-01-19 13:16:13,754 INFO L130 PetriNetUnfolder]: For 2750/2765 co-relation queries the response was YES. [2022-01-19 13:16:13,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 803 events. 130/803 cut-off events. For 2750/2765 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4644 event pairs, 65 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2760. Up to 261 conditions per place. [2022-01-19 13:16:13,761 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 29/247 dead transitions. [2022-01-19 13:16:13,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 247 transitions, 1818 flow [2022-01-19 13:16:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2022-01-19 13:16:13,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2022-01-19 13:16:13,764 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2466 transitions. [2022-01-19 13:16:13,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2466 transitions. [2022-01-19 13:16:13,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:13,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2466 transitions. [2022-01-19 13:16:13,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,770 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,770 INFO L186 Difference]: Start difference. First operand has 293 places, 229 transitions, 1409 flow. Second operand 18 states and 2466 transitions. [2022-01-19 13:16:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 247 transitions, 1818 flow [2022-01-19 13:16:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 247 transitions, 1752 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-01-19 13:16:13,794 INFO L242 Difference]: Finished difference. Result has 290 places, 214 transitions, 1200 flow [2022-01-19 13:16:13,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1200, PETRI_PLACES=290, PETRI_TRANSITIONS=214} [2022-01-19 13:16:13,795 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2022-01-19 13:16:13,795 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 214 transitions, 1200 flow [2022-01-19 13:16:13,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:13,795 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] [2022-01-19 13:16:13,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:16:13,796 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2094668727, now seen corresponding path program 17 times [2022-01-19 13:16:13,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:13,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443490765] [2022-01-19 13:16:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:13,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:13,888 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 13:16:13,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:13,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443490765] [2022-01-19 13:16:13,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443490765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:13,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:13,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:13,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284459709] [2022-01-19 13:16:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:13,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:13,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:13,891 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:13,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 214 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:13,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:13,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:13,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:14,167 INFO L129 PetriNetUnfolder]: 130/800 cut-off events. [2022-01-19 13:16:14,167 INFO L130 PetriNetUnfolder]: For 2770/2785 co-relation queries the response was YES. [2022-01-19 13:16:14,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 800 events. 130/800 cut-off events. For 2770/2785 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4617 event pairs, 66 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 2776. Up to 263 conditions per place. [2022-01-19 13:16:14,175 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 24/250 dead transitions. [2022-01-19 13:16:14,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 250 transitions, 1916 flow [2022-01-19 13:16:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2337 transitions. [2022-01-19 13:16:14,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810828877005348 [2022-01-19 13:16:14,177 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2337 transitions. [2022-01-19 13:16:14,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2337 transitions. [2022-01-19 13:16:14,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:14,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2337 transitions. [2022-01-19 13:16:14,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.47058823529412) internal successors, (2337), 17 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,183 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,183 INFO L186 Difference]: Start difference. First operand has 290 places, 214 transitions, 1200 flow. Second operand 17 states and 2337 transitions. [2022-01-19 13:16:14,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 250 transitions, 1916 flow [2022-01-19 13:16:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 250 transitions, 1715 flow, removed 48 selfloop flow, removed 20 redundant places. [2022-01-19 13:16:14,206 INFO L242 Difference]: Finished difference. Result has 273 places, 222 transitions, 1305 flow [2022-01-19 13:16:14,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1305, PETRI_PLACES=273, PETRI_TRANSITIONS=222} [2022-01-19 13:16:14,206 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-01-19 13:16:14,207 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 222 transitions, 1305 flow [2022-01-19 13:16:14,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,207 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:14,207 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] [2022-01-19 13:16:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:16:14,207 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2023806495, now seen corresponding path program 18 times [2022-01-19 13:16:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:14,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528244317] [2022-01-19 13:16:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:14,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:14,296 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 13:16:14,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:14,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528244317] [2022-01-19 13:16:14,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528244317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:14,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:14,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:14,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645595092] [2022-01-19 13:16:14,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:14,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:14,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:14,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:14,299 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:14,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 222 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:14,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:14,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:14,613 INFO L129 PetriNetUnfolder]: 120/774 cut-off events. [2022-01-19 13:16:14,614 INFO L130 PetriNetUnfolder]: For 2129/2144 co-relation queries the response was YES. [2022-01-19 13:16:14,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 774 events. 120/774 cut-off events. For 2129/2144 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4445 event pairs, 64 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 2529. Up to 261 conditions per place. [2022-01-19 13:16:14,620 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 65 selfloop transitions, 14 changer transitions 28/242 dead transitions. [2022-01-19 13:16:14,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 242 transitions, 1679 flow [2022-01-19 13:16:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2022-01-19 13:16:14,624 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2022-01-19 13:16:14,624 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2022-01-19 13:16:14,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2022-01-19 13:16:14,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:14,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2022-01-19 13:16:14,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,639 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,639 INFO L186 Difference]: Start difference. First operand has 273 places, 222 transitions, 1305 flow. Second operand 18 states and 2468 transitions. [2022-01-19 13:16:14,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 242 transitions, 1679 flow [2022-01-19 13:16:14,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 242 transitions, 1574 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-01-19 13:16:14,660 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1117 flow [2022-01-19 13:16:14,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2022-01-19 13:16:14,667 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-01-19 13:16:14,667 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1117 flow [2022-01-19 13:16:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:14,668 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] [2022-01-19 13:16:14,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:16:14,668 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash -503396899, now seen corresponding path program 19 times [2022-01-19 13:16:14,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:14,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852569664] [2022-01-19 13:16:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:14,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:16:14,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:14,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852569664] [2022-01-19 13:16:14,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852569664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:14,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:14,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:14,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164675826] [2022-01-19 13:16:14,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:14,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:14,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:14,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:14,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:14,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:14,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:14,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:15,063 INFO L129 PetriNetUnfolder]: 117/764 cut-off events. [2022-01-19 13:16:15,064 INFO L130 PetriNetUnfolder]: For 1993/2008 co-relation queries the response was YES. [2022-01-19 13:16:15,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 764 events. 117/764 cut-off events. For 1993/2008 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4296 event pairs, 63 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 2437. Up to 253 conditions per place. [2022-01-19 13:16:15,069 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 15 changer transitions 29/238 dead transitions. [2022-01-19 13:16:15,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 238 transitions, 1608 flow [2022-01-19 13:16:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:16:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:16:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2870 transitions. [2022-01-19 13:16:15,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765151515151515 [2022-01-19 13:16:15,072 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2870 transitions. [2022-01-19 13:16:15,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2870 transitions. [2022-01-19 13:16:15,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:15,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2870 transitions. [2022-01-19 13:16:15,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.66666666666666) internal successors, (2870), 21 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,079 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,079 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1117 flow. Second operand 21 states and 2870 transitions. [2022-01-19 13:16:15,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 238 transitions, 1608 flow [2022-01-19 13:16:15,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 238 transitions, 1480 flow, removed 26 selfloop flow, removed 15 redundant places. [2022-01-19 13:16:15,097 INFO L242 Difference]: Finished difference. Result has 277 places, 208 transitions, 1063 flow [2022-01-19 13:16:15,097 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1063, PETRI_PLACES=277, PETRI_TRANSITIONS=208} [2022-01-19 13:16:15,098 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2022-01-19 13:16:15,098 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 208 transitions, 1063 flow [2022-01-19 13:16:15,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:15,098 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] [2022-01-19 13:16:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:16:15,098 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2089303793, now seen corresponding path program 20 times [2022-01-19 13:16:15,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:15,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879442073] [2022-01-19 13:16:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:15,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:15,193 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 13:16:15,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879442073] [2022-01-19 13:16:15,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879442073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:15,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:15,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:15,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218407669] [2022-01-19 13:16:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:15,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:15,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:15,196 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:15,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 208 transitions, 1063 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:15,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:15,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:15,484 INFO L129 PetriNetUnfolder]: 103/675 cut-off events. [2022-01-19 13:16:15,484 INFO L130 PetriNetUnfolder]: For 1580/1595 co-relation queries the response was YES. [2022-01-19 13:16:15,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 675 events. 103/675 cut-off events. For 1580/1595 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3592 event pairs, 60 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 2086. Up to 234 conditions per place. [2022-01-19 13:16:15,489 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 47 selfloop transitions, 0 changer transitions 39/215 dead transitions. [2022-01-19 13:16:15,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 215 transitions, 1254 flow [2022-01-19 13:16:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2456 transitions. [2022-01-19 13:16:15,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752525252525253 [2022-01-19 13:16:15,492 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2456 transitions. [2022-01-19 13:16:15,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2456 transitions. [2022-01-19 13:16:15,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:15,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2456 transitions. [2022-01-19 13:16:15,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.44444444444446) internal successors, (2456), 18 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,498 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,498 INFO L186 Difference]: Start difference. First operand has 277 places, 208 transitions, 1063 flow. Second operand 18 states and 2456 transitions. [2022-01-19 13:16:15,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 215 transitions, 1254 flow [2022-01-19 13:16:15,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 1194 flow, removed 14 selfloop flow, removed 17 redundant places. [2022-01-19 13:16:15,514 INFO L242 Difference]: Finished difference. Result has 267 places, 176 transitions, 712 flow [2022-01-19 13:16:15,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=267, PETRI_TRANSITIONS=176} [2022-01-19 13:16:15,515 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2022-01-19 13:16:15,515 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 712 flow [2022-01-19 13:16:15,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:15,516 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] [2022-01-19 13:16:15,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:16:15,516 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1809009679, now seen corresponding path program 4 times [2022-01-19 13:16:15,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:15,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133831910] [2022-01-19 13:16:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:15,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:15,602 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 13:16:15,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:15,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133831910] [2022-01-19 13:16:15,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133831910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:15,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:15,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:15,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793695725] [2022-01-19 13:16:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:15,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:15,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:15,605 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:15,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 176 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:15,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:15,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:15,886 INFO L129 PetriNetUnfolder]: 104/666 cut-off events. [2022-01-19 13:16:15,886 INFO L130 PetriNetUnfolder]: For 1495/1503 co-relation queries the response was YES. [2022-01-19 13:16:15,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 666 events. 104/666 cut-off events. For 1495/1503 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3583 event pairs, 49 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1950. Up to 150 conditions per place. [2022-01-19 13:16:15,891 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 33/236 dead transitions. [2022-01-19 13:16:15,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1385 flow [2022-01-19 13:16:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:16:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:16:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2755 transitions. [2022-01-19 13:16:15,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2022-01-19 13:16:15,893 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2755 transitions. [2022-01-19 13:16:15,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2755 transitions. [2022-01-19 13:16:15,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:15,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2755 transitions. [2022-01-19 13:16:15,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.75) internal successors, (2755), 20 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,900 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,900 INFO L186 Difference]: Start difference. First operand has 267 places, 176 transitions, 712 flow. Second operand 20 states and 2755 transitions. [2022-01-19 13:16:15,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1385 flow [2022-01-19 13:16:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 1355 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-01-19 13:16:15,912 INFO L242 Difference]: Finished difference. Result has 249 places, 187 transitions, 884 flow [2022-01-19 13:16:15,912 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=884, PETRI_PLACES=249, PETRI_TRANSITIONS=187} [2022-01-19 13:16:15,913 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-01-19 13:16:15,913 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 187 transitions, 884 flow [2022-01-19 13:16:15,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:15,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:15,914 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] [2022-01-19 13:16:15,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 13:16:15,914 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -653441541, now seen corresponding path program 5 times [2022-01-19 13:16:15,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072568369] [2022-01-19 13:16:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:15,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:15,998 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 13:16:15,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:15,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072568369] [2022-01-19 13:16:15,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072568369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:15,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:15,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:15,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37882340] [2022-01-19 13:16:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:15,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:15,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:16,001 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:16,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 187 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:16,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:16,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:16,272 INFO L129 PetriNetUnfolder]: 105/685 cut-off events. [2022-01-19 13:16:16,272 INFO L130 PetriNetUnfolder]: For 2281/2297 co-relation queries the response was YES. [2022-01-19 13:16:16,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 685 events. 105/685 cut-off events. For 2281/2297 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3765 event pairs, 45 based on Foata normal form. 4/661 useless extension candidates. Maximal degree in co-relation 2192. Up to 170 conditions per place. [2022-01-19 13:16:16,277 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 25/236 dead transitions. [2022-01-19 13:16:16,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 236 transitions, 1634 flow [2022-01-19 13:16:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:16:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:16:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2022-01-19 13:16:16,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7837357954545454 [2022-01-19 13:16:16,279 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2022-01-19 13:16:16,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2022-01-19 13:16:16,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:16,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2022-01-19 13:16:16,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.9375) internal successors, (2207), 16 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,285 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,285 INFO L186 Difference]: Start difference. First operand has 249 places, 187 transitions, 884 flow. Second operand 16 states and 2207 transitions. [2022-01-19 13:16:16,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 236 transitions, 1634 flow [2022-01-19 13:16:16,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 236 transitions, 1519 flow, removed 50 selfloop flow, removed 10 redundant places. [2022-01-19 13:16:16,299 INFO L242 Difference]: Finished difference. Result has 253 places, 197 transitions, 1048 flow [2022-01-19 13:16:16,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1048, PETRI_PLACES=253, PETRI_TRANSITIONS=197} [2022-01-19 13:16:16,300 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 13:16:16,300 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 197 transitions, 1048 flow [2022-01-19 13:16:16,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:16,300 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] [2022-01-19 13:16:16,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:16:16,300 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1109799355, now seen corresponding path program 6 times [2022-01-19 13:16:16,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:16,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485935601] [2022-01-19 13:16:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:16,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:16,401 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 13:16:16,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:16,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485935601] [2022-01-19 13:16:16,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485935601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:16,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:16,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:16,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225294957] [2022-01-19 13:16:16,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:16,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:16,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:16,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:16,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:16,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:16,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 197 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:16,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:16,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:16,758 INFO L129 PetriNetUnfolder]: 116/711 cut-off events. [2022-01-19 13:16:16,758 INFO L130 PetriNetUnfolder]: For 2481/2501 co-relation queries the response was YES. [2022-01-19 13:16:16,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 711 events. 116/711 cut-off events. For 2481/2501 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3981 event pairs, 48 based on Foata normal form. 4/686 useless extension candidates. Maximal degree in co-relation 2356. Up to 169 conditions per place. [2022-01-19 13:16:16,765 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 79 selfloop transitions, 24 changer transitions 33/256 dead transitions. [2022-01-19 13:16:16,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 256 transitions, 1940 flow [2022-01-19 13:16:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:16:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:16:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2890 transitions. [2022-01-19 13:16:16,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819264069264069 [2022-01-19 13:16:16,768 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2890 transitions. [2022-01-19 13:16:16,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2890 transitions. [2022-01-19 13:16:16,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:16,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2890 transitions. [2022-01-19 13:16:16,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.61904761904762) internal successors, (2890), 21 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,773 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,774 INFO L186 Difference]: Start difference. First operand has 253 places, 197 transitions, 1048 flow. Second operand 21 states and 2890 transitions. [2022-01-19 13:16:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 256 transitions, 1940 flow [2022-01-19 13:16:16,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 256 transitions, 1819 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-01-19 13:16:16,790 INFO L242 Difference]: Finished difference. Result has 273 places, 207 transitions, 1218 flow [2022-01-19 13:16:16,791 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1218, PETRI_PLACES=273, PETRI_TRANSITIONS=207} [2022-01-19 13:16:16,791 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2022-01-19 13:16:16,791 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 207 transitions, 1218 flow [2022-01-19 13:16:16,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:16,792 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] [2022-01-19 13:16:16,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:16:16,792 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash 376522777, now seen corresponding path program 7 times [2022-01-19 13:16:16,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:16,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604928477] [2022-01-19 13:16:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:16,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:16,893 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 13:16:16,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604928477] [2022-01-19 13:16:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604928477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:16,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:16,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:16,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509105531] [2022-01-19 13:16:16,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:16,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:16,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:16,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:16,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:16,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 207 transitions, 1218 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:16,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:16,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:16,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:17,217 INFO L129 PetriNetUnfolder]: 110/735 cut-off events. [2022-01-19 13:16:17,217 INFO L130 PetriNetUnfolder]: For 3086/3106 co-relation queries the response was YES. [2022-01-19 13:16:17,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 735 events. 110/735 cut-off events. For 3086/3106 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4263 event pairs, 51 based on Foata normal form. 4/708 useless extension candidates. Maximal degree in co-relation 2521. Up to 186 conditions per place. [2022-01-19 13:16:17,225 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 73 selfloop transitions, 30 changer transitions 33/256 dead transitions. [2022-01-19 13:16:17,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 256 transitions, 2107 flow [2022-01-19 13:16:17,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:16:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:16:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2022-01-19 13:16:17,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2022-01-19 13:16:17,228 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2022-01-19 13:16:17,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2022-01-19 13:16:17,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:17,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2022-01-19 13:16:17,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,234 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,234 INFO L186 Difference]: Start difference. First operand has 273 places, 207 transitions, 1218 flow. Second operand 20 states and 2750 transitions. [2022-01-19 13:16:17,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 256 transitions, 2107 flow [2022-01-19 13:16:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 256 transitions, 1963 flow, removed 58 selfloop flow, removed 12 redundant places. [2022-01-19 13:16:17,256 INFO L242 Difference]: Finished difference. Result has 280 places, 213 transitions, 1345 flow [2022-01-19 13:16:17,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2022-01-19 13:16:17,257 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2022-01-19 13:16:17,257 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1345 flow [2022-01-19 13:16:17,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:17,257 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] [2022-01-19 13:16:17,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:16:17,258 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1946033001, now seen corresponding path program 8 times [2022-01-19 13:16:17,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:17,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094193476] [2022-01-19 13:16:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:17,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:17,357 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 13:16:17,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:17,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094193476] [2022-01-19 13:16:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094193476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:17,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:17,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485453946] [2022-01-19 13:16:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:17,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:17,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:17,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:17,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:17,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:17,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:17,711 INFO L129 PetriNetUnfolder]: 106/734 cut-off events. [2022-01-19 13:16:17,711 INFO L130 PetriNetUnfolder]: For 2925/2936 co-relation queries the response was YES. [2022-01-19 13:16:17,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 734 events. 106/734 cut-off events. For 2925/2936 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4269 event pairs, 41 based on Foata normal form. 3/711 useless extension candidates. Maximal degree in co-relation 2460. Up to 170 conditions per place. [2022-01-19 13:16:17,717 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 29 changer transitions 37/266 dead transitions. [2022-01-19 13:16:17,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 2220 flow [2022-01-19 13:16:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:16:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:16:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3018 transitions. [2022-01-19 13:16:17,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794421487603306 [2022-01-19 13:16:17,726 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3018 transitions. [2022-01-19 13:16:17,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3018 transitions. [2022-01-19 13:16:17,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:17,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3018 transitions. [2022-01-19 13:16:17,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.1818181818182) internal successors, (3018), 22 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,732 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,732 INFO L186 Difference]: Start difference. First operand has 280 places, 213 transitions, 1345 flow. Second operand 22 states and 3018 transitions. [2022-01-19 13:16:17,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 2220 flow [2022-01-19 13:16:17,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 2117 flow, removed 29 selfloop flow, removed 12 redundant places. [2022-01-19 13:16:17,753 INFO L242 Difference]: Finished difference. Result has 290 places, 212 transitions, 1378 flow [2022-01-19 13:16:17,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1378, PETRI_PLACES=290, PETRI_TRANSITIONS=212} [2022-01-19 13:16:17,754 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2022-01-19 13:16:17,754 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 212 transitions, 1378 flow [2022-01-19 13:16:17,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:17,755 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] [2022-01-19 13:16:17,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 13:16:17,755 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash -103991529, now seen corresponding path program 9 times [2022-01-19 13:16:17,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:17,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815478127] [2022-01-19 13:16:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:17,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:17,871 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 13:16:17,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815478127] [2022-01-19 13:16:17,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815478127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:17,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:17,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:17,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916798139] [2022-01-19 13:16:17,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:17,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:17,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:17,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:17,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 212 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:17,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:17,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:17,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:18,119 INFO L129 PetriNetUnfolder]: 90/657 cut-off events. [2022-01-19 13:16:18,120 INFO L130 PetriNetUnfolder]: For 2536/2545 co-relation queries the response was YES. [2022-01-19 13:16:18,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 657 events. 90/657 cut-off events. For 2536/2545 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3569 event pairs, 40 based on Foata normal form. 3/635 useless extension candidates. Maximal degree in co-relation 2151. Up to 163 conditions per place. [2022-01-19 13:16:18,125 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 17 changer transitions 34/242 dead transitions. [2022-01-19 13:16:18,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 242 transitions, 1906 flow [2022-01-19 13:16:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2022-01-19 13:16:18,129 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2022-01-19 13:16:18,129 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2022-01-19 13:16:18,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2022-01-19 13:16:18,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:18,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2022-01-19 13:16:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,134 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,134 INFO L186 Difference]: Start difference. First operand has 290 places, 212 transitions, 1378 flow. Second operand 18 states and 2470 transitions. [2022-01-19 13:16:18,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 242 transitions, 1906 flow [2022-01-19 13:16:18,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 242 transitions, 1776 flow, removed 40 selfloop flow, removed 17 redundant places. [2022-01-19 13:16:18,153 INFO L242 Difference]: Finished difference. Result has 283 places, 197 transitions, 1117 flow [2022-01-19 13:16:18,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=283, PETRI_TRANSITIONS=197} [2022-01-19 13:16:18,154 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2022-01-19 13:16:18,154 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 197 transitions, 1117 flow [2022-01-19 13:16:18,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:18,155 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] [2022-01-19 13:16:18,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:16:18,155 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:18,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1878967331, now seen corresponding path program 10 times [2022-01-19 13:16:18,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581329910] [2022-01-19 13:16:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:18,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:18,248 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 13:16:18,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:18,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581329910] [2022-01-19 13:16:18,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581329910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:18,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:18,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:18,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621973268] [2022-01-19 13:16:18,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:18,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:18,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:18,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:18,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:18,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 197 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:18,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:18,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:18,557 INFO L129 PetriNetUnfolder]: 86/632 cut-off events. [2022-01-19 13:16:18,557 INFO L130 PetriNetUnfolder]: For 2092/2110 co-relation queries the response was YES. [2022-01-19 13:16:18,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 632 events. 86/632 cut-off events. For 2092/2110 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3364 event pairs, 40 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 2019. Up to 157 conditions per place. [2022-01-19 13:16:18,562 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 63 selfloop transitions, 23 changer transitions 30/236 dead transitions. [2022-01-19 13:16:18,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 236 transitions, 1792 flow [2022-01-19 13:16:18,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2480 transitions. [2022-01-19 13:16:18,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7828282828282829 [2022-01-19 13:16:18,566 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2480 transitions. [2022-01-19 13:16:18,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2480 transitions. [2022-01-19 13:16:18,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:18,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2480 transitions. [2022-01-19 13:16:18,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.77777777777777) internal successors, (2480), 18 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,571 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,571 INFO L186 Difference]: Start difference. First operand has 283 places, 197 transitions, 1117 flow. Second operand 18 states and 2480 transitions. [2022-01-19 13:16:18,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 236 transitions, 1792 flow [2022-01-19 13:16:18,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 1654 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-01-19 13:16:18,587 INFO L242 Difference]: Finished difference. Result has 269 places, 200 transitions, 1152 flow [2022-01-19 13:16:18,588 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=269, PETRI_TRANSITIONS=200} [2022-01-19 13:16:18,588 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2022-01-19 13:16:18,588 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 200 transitions, 1152 flow [2022-01-19 13:16:18,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:18,589 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] [2022-01-19 13:16:18,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 13:16:18,589 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1313153469, now seen corresponding path program 11 times [2022-01-19 13:16:18,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:18,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287104595] [2022-01-19 13:16:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:18,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:18,684 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 13:16:18,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:18,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287104595] [2022-01-19 13:16:18,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287104595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:18,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:18,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:18,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935915181] [2022-01-19 13:16:18,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:18,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:18,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:18,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:18,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 200 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:18,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:18,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:18,934 INFO L129 PetriNetUnfolder]: 80/606 cut-off events. [2022-01-19 13:16:18,934 INFO L130 PetriNetUnfolder]: For 1769/1778 co-relation queries the response was YES. [2022-01-19 13:16:18,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 606 events. 80/606 cut-off events. For 1769/1778 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3114 event pairs, 41 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 1862. Up to 155 conditions per place. [2022-01-19 13:16:18,939 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 60 selfloop transitions, 15 changer transitions 29/224 dead transitions. [2022-01-19 13:16:18,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 224 transitions, 1592 flow [2022-01-19 13:16:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2473 transitions. [2022-01-19 13:16:18,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806186868686869 [2022-01-19 13:16:18,941 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2473 transitions. [2022-01-19 13:16:18,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2473 transitions. [2022-01-19 13:16:18,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:18,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2473 transitions. [2022-01-19 13:16:18,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.38888888888889) internal successors, (2473), 18 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,946 INFO L186 Difference]: Start difference. First operand has 269 places, 200 transitions, 1152 flow. Second operand 18 states and 2473 transitions. [2022-01-19 13:16:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 224 transitions, 1592 flow [2022-01-19 13:16:18,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 224 transitions, 1499 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-01-19 13:16:18,962 INFO L242 Difference]: Finished difference. Result has 277 places, 191 transitions, 1006 flow [2022-01-19 13:16:18,962 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1006, PETRI_PLACES=277, PETRI_TRANSITIONS=191} [2022-01-19 13:16:18,962 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2022-01-19 13:16:18,963 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 191 transitions, 1006 flow [2022-01-19 13:16:18,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:18,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:18,963 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] [2022-01-19 13:16:18,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 13:16:18,963 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:18,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -602577015, now seen corresponding path program 12 times [2022-01-19 13:16:18,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:18,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145832378] [2022-01-19 13:16:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:18,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:19,058 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 13:16:19,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:19,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145832378] [2022-01-19 13:16:19,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145832378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:19,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:19,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:19,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319092448] [2022-01-19 13:16:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:19,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:19,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:19,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:19,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 191 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:19,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:19,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:19,282 INFO L129 PetriNetUnfolder]: 68/560 cut-off events. [2022-01-19 13:16:19,283 INFO L130 PetriNetUnfolder]: For 1427/1445 co-relation queries the response was YES. [2022-01-19 13:16:19,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 560 events. 68/560 cut-off events. For 1427/1445 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2729 event pairs, 40 based on Foata normal form. 4/540 useless extension candidates. Maximal degree in co-relation 1597. Up to 145 conditions per place. [2022-01-19 13:16:19,286 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 51 selfloop transitions, 3 changer transitions 32/206 dead transitions. [2022-01-19 13:16:19,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 206 transitions, 1271 flow [2022-01-19 13:16:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2329 transitions. [2022-01-19 13:16:19,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2022-01-19 13:16:19,288 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2329 transitions. [2022-01-19 13:16:19,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2329 transitions. [2022-01-19 13:16:19,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:19,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2329 transitions. [2022-01-19 13:16:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,292 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,292 INFO L186 Difference]: Start difference. First operand has 277 places, 191 transitions, 1006 flow. Second operand 17 states and 2329 transitions. [2022-01-19 13:16:19,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 206 transitions, 1271 flow [2022-01-19 13:16:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 206 transitions, 1181 flow, removed 19 selfloop flow, removed 18 redundant places. [2022-01-19 13:16:19,304 INFO L242 Difference]: Finished difference. Result has 263 places, 171 transitions, 690 flow [2022-01-19 13:16:19,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=690, PETRI_PLACES=263, PETRI_TRANSITIONS=171} [2022-01-19 13:16:19,305 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 104 predicate places. [2022-01-19 13:16:19,305 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 690 flow [2022-01-19 13:16:19,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:19,306 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] [2022-01-19 13:16:19,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 13:16:19,306 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:19,306 INFO L85 PathProgramCache]: Analyzing trace with hash -97134579, now seen corresponding path program 13 times [2022-01-19 13:16:19,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:19,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111377090] [2022-01-19 13:16:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:19,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:19,406 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 13:16:19,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:19,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111377090] [2022-01-19 13:16:19,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111377090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:19,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:19,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836676228] [2022-01-19 13:16:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:19,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:19,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:19,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:19,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 171 transitions, 690 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:19,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:19,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:19,699 INFO L129 PetriNetUnfolder]: 77/611 cut-off events. [2022-01-19 13:16:19,699 INFO L130 PetriNetUnfolder]: For 1367/1374 co-relation queries the response was YES. [2022-01-19 13:16:19,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 611 events. 77/611 cut-off events. For 1367/1374 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3158 event pairs, 35 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 1738. Up to 128 conditions per place. [2022-01-19 13:16:19,703 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 21 changer transitions 33/230 dead transitions. [2022-01-19 13:16:19,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 230 transitions, 1488 flow [2022-01-19 13:16:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:16:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:16:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3019 transitions. [2022-01-19 13:16:19,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797004132231405 [2022-01-19 13:16:19,706 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3019 transitions. [2022-01-19 13:16:19,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3019 transitions. [2022-01-19 13:16:19,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:19,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3019 transitions. [2022-01-19 13:16:19,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.22727272727272) internal successors, (3019), 22 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,712 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,712 INFO L186 Difference]: Start difference. First operand has 263 places, 171 transitions, 690 flow. Second operand 22 states and 3019 transitions. [2022-01-19 13:16:19,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 230 transitions, 1488 flow [2022-01-19 13:16:19,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 1341 flow, removed 32 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:19,723 INFO L242 Difference]: Finished difference. Result has 250 places, 183 transitions, 848 flow [2022-01-19 13:16:19,723 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=848, PETRI_PLACES=250, PETRI_TRANSITIONS=183} [2022-01-19 13:16:19,723 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 91 predicate places. [2022-01-19 13:16:19,723 INFO L470 AbstractCegarLoop]: Abstraction has has 250 places, 183 transitions, 848 flow [2022-01-19 13:16:19,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:19,724 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] [2022-01-19 13:16:19,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 13:16:19,724 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:19,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1585175349, now seen corresponding path program 14 times [2022-01-19 13:16:19,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:19,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503086905] [2022-01-19 13:16:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:19,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:19,817 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 13:16:19,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503086905] [2022-01-19 13:16:19,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503086905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:19,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:19,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:19,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531668547] [2022-01-19 13:16:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:19,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:19,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:19,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:19,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 183 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:19,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:19,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:19,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:20,082 INFO L129 PetriNetUnfolder]: 79/605 cut-off events. [2022-01-19 13:16:20,082 INFO L130 PetriNetUnfolder]: For 1559/1566 co-relation queries the response was YES. [2022-01-19 13:16:20,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 605 events. 79/605 cut-off events. For 1559/1566 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3123 event pairs, 35 based on Foata normal form. 2/585 useless extension candidates. Maximal degree in co-relation 1823. Up to 134 conditions per place. [2022-01-19 13:16:20,087 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 27 changer transitions 28/229 dead transitions. [2022-01-19 13:16:20,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 229 transitions, 1534 flow [2022-01-19 13:16:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2022-01-19 13:16:20,090 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2022-01-19 13:16:20,090 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2022-01-19 13:16:20,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2022-01-19 13:16:20,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:20,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2022-01-19 13:16:20,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,095 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,095 INFO L186 Difference]: Start difference. First operand has 250 places, 183 transitions, 848 flow. Second operand 17 states and 2341 transitions. [2022-01-19 13:16:20,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 229 transitions, 1534 flow [2022-01-19 13:16:20,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 229 transitions, 1451 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 13:16:20,107 INFO L242 Difference]: Finished difference. Result has 251 places, 191 transitions, 1002 flow [2022-01-19 13:16:20,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1002, PETRI_PLACES=251, PETRI_TRANSITIONS=191} [2022-01-19 13:16:20,107 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-01-19 13:16:20,108 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 191 transitions, 1002 flow [2022-01-19 13:16:20,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:20,108 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] [2022-01-19 13:16:20,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 13:16:20,108 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -941495501, now seen corresponding path program 15 times [2022-01-19 13:16:20,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436536880] [2022-01-19 13:16:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:20,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:20,238 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 13:16:20,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:20,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436536880] [2022-01-19 13:16:20,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436536880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:20,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:20,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:20,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839843959] [2022-01-19 13:16:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:20,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:20,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:20,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:20,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 191 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:20,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:20,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:20,453 INFO L129 PetriNetUnfolder]: 77/615 cut-off events. [2022-01-19 13:16:20,453 INFO L130 PetriNetUnfolder]: For 1691/1698 co-relation queries the response was YES. [2022-01-19 13:16:20,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 615 events. 77/615 cut-off events. For 1691/1698 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3221 event pairs, 34 based on Foata normal form. 3/597 useless extension candidates. Maximal degree in co-relation 1869. Up to 135 conditions per place. [2022-01-19 13:16:20,457 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 25 changer transitions 31/232 dead transitions. [2022-01-19 13:16:20,457 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 232 transitions, 1623 flow [2022-01-19 13:16:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 13:16:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 13:16:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2022-01-19 13:16:20,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7848011363636364 [2022-01-19 13:16:20,458 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2022-01-19 13:16:20,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2022-01-19 13:16:20,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:20,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2022-01-19 13:16:20,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.125) internal successors, (2210), 16 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,462 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,462 INFO L186 Difference]: Start difference. First operand has 251 places, 191 transitions, 1002 flow. Second operand 16 states and 2210 transitions. [2022-01-19 13:16:20,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 232 transitions, 1623 flow [2022-01-19 13:16:20,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 232 transitions, 1525 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-01-19 13:16:20,471 INFO L242 Difference]: Finished difference. Result has 257 places, 195 transitions, 1053 flow [2022-01-19 13:16:20,471 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1053, PETRI_PLACES=257, PETRI_TRANSITIONS=195} [2022-01-19 13:16:20,472 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-01-19 13:16:20,472 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 195 transitions, 1053 flow [2022-01-19 13:16:20,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,472 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:20,472 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] [2022-01-19 13:16:20,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 13:16:20,472 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2079824505, now seen corresponding path program 16 times [2022-01-19 13:16:20,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233516138] [2022-01-19 13:16:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:20,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:20,574 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 13:16:20,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:20,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233516138] [2022-01-19 13:16:20,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233516138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:20,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:20,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:20,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503660430] [2022-01-19 13:16:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:20,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:20,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:20,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:20,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 195 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:20,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:20,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:20,862 INFO L129 PetriNetUnfolder]: 75/609 cut-off events. [2022-01-19 13:16:20,862 INFO L130 PetriNetUnfolder]: For 1833/1838 co-relation queries the response was YES. [2022-01-19 13:16:20,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 609 events. 75/609 cut-off events. For 1833/1838 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3168 event pairs, 32 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 1859. Up to 127 conditions per place. [2022-01-19 13:16:20,866 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 25 changer transitions 33/239 dead transitions. [2022-01-19 13:16:20,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 239 transitions, 1801 flow [2022-01-19 13:16:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 13:16:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 13:16:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2882 transitions. [2022-01-19 13:16:20,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797619047619048 [2022-01-19 13:16:20,868 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2882 transitions. [2022-01-19 13:16:20,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2882 transitions. [2022-01-19 13:16:20,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:20,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2882 transitions. [2022-01-19 13:16:20,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,872 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,872 INFO L186 Difference]: Start difference. First operand has 257 places, 195 transitions, 1053 flow. Second operand 21 states and 2882 transitions. [2022-01-19 13:16:20,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 239 transitions, 1801 flow [2022-01-19 13:16:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 239 transitions, 1700 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-01-19 13:16:20,882 INFO L242 Difference]: Finished difference. Result has 275 places, 197 transitions, 1135 flow [2022-01-19 13:16:20,883 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1135, PETRI_PLACES=275, PETRI_TRANSITIONS=197} [2022-01-19 13:16:20,883 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2022-01-19 13:16:20,883 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 197 transitions, 1135 flow [2022-01-19 13:16:20,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:20,884 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] [2022-01-19 13:16:20,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 13:16:20,884 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 155303969, now seen corresponding path program 17 times [2022-01-19 13:16:20,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350553896] [2022-01-19 13:16:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:20,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:20,972 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 13:16:20,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:20,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350553896] [2022-01-19 13:16:20,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350553896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:20,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:20,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:20,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128086948] [2022-01-19 13:16:20,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:20,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:20,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:20,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:20,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:20,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:20,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 197 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:20,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:20,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:20,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:21,222 INFO L129 PetriNetUnfolder]: 65/556 cut-off events. [2022-01-19 13:16:21,222 INFO L130 PetriNetUnfolder]: For 1694/1701 co-relation queries the response was YES. [2022-01-19 13:16:21,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 556 events. 65/556 cut-off events. For 1694/1701 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2700 event pairs, 32 based on Foata normal form. 3/538 useless extension candidates. Maximal degree in co-relation 1668. Up to 127 conditions per place. [2022-01-19 13:16:21,225 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 13 changer transitions 33/220 dead transitions. [2022-01-19 13:16:21,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 1535 flow [2022-01-19 13:16:21,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2022-01-19 13:16:21,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7793560606060606 [2022-01-19 13:16:21,227 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2469 transitions. [2022-01-19 13:16:21,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2469 transitions. [2022-01-19 13:16:21,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:21,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2469 transitions. [2022-01-19 13:16:21,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.16666666666666) internal successors, (2469), 18 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,232 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,232 INFO L186 Difference]: Start difference. First operand has 275 places, 197 transitions, 1135 flow. Second operand 18 states and 2469 transitions. [2022-01-19 13:16:21,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 1535 flow [2022-01-19 13:16:21,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 220 transitions, 1420 flow, removed 33 selfloop flow, removed 16 redundant places. [2022-01-19 13:16:21,246 INFO L242 Difference]: Finished difference. Result has 270 places, 182 transitions, 900 flow [2022-01-19 13:16:21,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=900, PETRI_PLACES=270, PETRI_TRANSITIONS=182} [2022-01-19 13:16:21,247 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-01-19 13:16:21,247 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 182 transitions, 900 flow [2022-01-19 13:16:21,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:21,248 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] [2022-01-19 13:16:21,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 13:16:21,248 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1872184799, now seen corresponding path program 18 times [2022-01-19 13:16:21,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:21,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865637791] [2022-01-19 13:16:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:21,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:21,375 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 13:16:21,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:21,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865637791] [2022-01-19 13:16:21,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865637791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:21,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:21,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:21,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48380093] [2022-01-19 13:16:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:21,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:21,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:21,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:21,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:21,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 182 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:21,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:21,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:21,614 INFO L129 PetriNetUnfolder]: 61/550 cut-off events. [2022-01-19 13:16:21,614 INFO L130 PetriNetUnfolder]: For 1454/1461 co-relation queries the response was YES. [2022-01-19 13:16:21,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 550 events. 61/550 cut-off events. For 1454/1461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2685 event pairs, 34 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 1539. Up to 125 conditions per place. [2022-01-19 13:16:21,617 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 45 selfloop transitions, 12 changer transitions 32/209 dead transitions. [2022-01-19 13:16:21,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 209 transitions, 1300 flow [2022-01-19 13:16:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2022-01-19 13:16:21,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2022-01-19 13:16:21,621 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2022-01-19 13:16:21,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2022-01-19 13:16:21,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:21,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2022-01-19 13:16:21,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,626 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,626 INFO L186 Difference]: Start difference. First operand has 270 places, 182 transitions, 900 flow. Second operand 18 states and 2471 transitions. [2022-01-19 13:16:21,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 209 transitions, 1300 flow [2022-01-19 13:16:21,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 209 transitions, 1194 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:21,637 INFO L242 Difference]: Finished difference. Result has 253 places, 174 transitions, 758 flow [2022-01-19 13:16:21,637 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=758, PETRI_PLACES=253, PETRI_TRANSITIONS=174} [2022-01-19 13:16:21,638 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2022-01-19 13:16:21,638 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 174 transitions, 758 flow [2022-01-19 13:16:21,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,638 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:21,639 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] [2022-01-19 13:16:21,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 13:16:21,639 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1588571595, now seen corresponding path program 19 times [2022-01-19 13:16:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991720403] [2022-01-19 13:16:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:21,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:21,739 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 13:16:21,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:21,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991720403] [2022-01-19 13:16:21,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991720403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:21,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:21,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:21,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938590167] [2022-01-19 13:16:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:21,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:21,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:21,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 174 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:21,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:21,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:21,935 INFO L129 PetriNetUnfolder]: 57/533 cut-off events. [2022-01-19 13:16:21,935 INFO L130 PetriNetUnfolder]: For 1071/1076 co-relation queries the response was YES. [2022-01-19 13:16:21,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 533 events. 57/533 cut-off events. For 1071/1076 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2547 event pairs, 32 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 1427. Up to 126 conditions per place. [2022-01-19 13:16:21,938 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 40 selfloop transitions, 17 changer transitions 32/209 dead transitions. [2022-01-19 13:16:21,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 209 transitions, 1272 flow [2022-01-19 13:16:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 13:16:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 13:16:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2022-01-19 13:16:21,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2022-01-19 13:16:21,941 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2022-01-19 13:16:21,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2022-01-19 13:16:21,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:21,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2022-01-19 13:16:21,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,945 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,945 INFO L186 Difference]: Start difference. First operand has 253 places, 174 transitions, 758 flow. Second operand 17 states and 2339 transitions. [2022-01-19 13:16:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 209 transitions, 1272 flow [2022-01-19 13:16:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 209 transitions, 1171 flow, removed 25 selfloop flow, removed 15 redundant places. [2022-01-19 13:16:21,955 INFO L242 Difference]: Finished difference. Result has 245 places, 175 transitions, 778 flow [2022-01-19 13:16:21,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=778, PETRI_PLACES=245, PETRI_TRANSITIONS=175} [2022-01-19 13:16:21,956 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 86 predicate places. [2022-01-19 13:16:21,956 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 175 transitions, 778 flow [2022-01-19 13:16:21,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:21,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:21,957 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] [2022-01-19 13:16:21,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 13:16:21,957 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -369122677, now seen corresponding path program 20 times [2022-01-19 13:16:21,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:21,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233088862] [2022-01-19 13:16:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:21,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:22,046 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 13:16:22,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:22,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233088862] [2022-01-19 13:16:22,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233088862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:22,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:22,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 13:16:22,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300820772] [2022-01-19 13:16:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:22,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:16:22,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:16:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 13:16:22,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2022-01-19 13:16:22,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 175 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:22,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2022-01-19 13:16:22,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:22,273 INFO L129 PetriNetUnfolder]: 46/448 cut-off events. [2022-01-19 13:16:22,273 INFO L130 PetriNetUnfolder]: For 740/745 co-relation queries the response was YES. [2022-01-19 13:16:22,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 448 events. 46/448 cut-off events. For 740/745 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1893 event pairs, 31 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 1129. Up to 103 conditions per place. [2022-01-19 13:16:22,276 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 43/186 dead transitions. [2022-01-19 13:16:22,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 186 transitions, 950 flow [2022-01-19 13:16:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:16:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:16:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2459 transitions. [2022-01-19 13:16:22,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7761994949494949 [2022-01-19 13:16:22,277 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2459 transitions. [2022-01-19 13:16:22,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2459 transitions. [2022-01-19 13:16:22,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:22,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2459 transitions. [2022-01-19 13:16:22,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,282 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,282 INFO L186 Difference]: Start difference. First operand has 245 places, 175 transitions, 778 flow. Second operand 18 states and 2459 transitions. [2022-01-19 13:16:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 186 transitions, 950 flow [2022-01-19 13:16:22,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 186 transitions, 864 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-01-19 13:16:22,290 INFO L242 Difference]: Finished difference. Result has 244 places, 143 transitions, 402 flow [2022-01-19 13:16:22,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=402, PETRI_PLACES=244, PETRI_TRANSITIONS=143} [2022-01-19 13:16:22,291 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 85 predicate places. [2022-01-19 13:16:22,291 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 143 transitions, 402 flow [2022-01-19 13:16:22,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,291 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:22,292 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] [2022-01-19 13:16:22,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 13:16:22,292 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -214406091, now seen corresponding path program 1 times [2022-01-19 13:16:22,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722176953] [2022-01-19 13:16:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:22,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:22,797 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 13:16:22,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:22,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722176953] [2022-01-19 13:16:22,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722176953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:22,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:22,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:22,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915593644] [2022-01-19 13:16:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:22,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:22,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:22,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:22,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:22,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 143 transitions, 402 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:22,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:22,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:22,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:25,420 INFO L129 PetriNetUnfolder]: 367/1337 cut-off events. [2022-01-19 13:16:25,420 INFO L130 PetriNetUnfolder]: For 1775/1777 co-relation queries the response was YES. [2022-01-19 13:16:25,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1337 events. 367/1337 cut-off events. For 1775/1777 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7681 event pairs, 67 based on Foata normal form. 1/1307 useless extension candidates. Maximal degree in co-relation 3190. Up to 126 conditions per place. [2022-01-19 13:16:25,431 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 33 changer transitions 49/361 dead transitions. [2022-01-19 13:16:25,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 361 transitions, 1995 flow [2022-01-19 13:16:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:16:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:16:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4974 transitions. [2022-01-19 13:16:25,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423037190082644 [2022-01-19 13:16:25,436 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4974 transitions. [2022-01-19 13:16:25,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4974 transitions. [2022-01-19 13:16:25,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:25,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4974 transitions. [2022-01-19 13:16:25,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 113.04545454545455) internal successors, (4974), 44 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:25,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:25,444 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:25,444 INFO L186 Difference]: Start difference. First operand has 244 places, 143 transitions, 402 flow. Second operand 44 states and 4974 transitions. [2022-01-19 13:16:25,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 361 transitions, 1995 flow [2022-01-19 13:16:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 361 transitions, 1819 flow, removed 87 selfloop flow, removed 11 redundant places. [2022-01-19 13:16:25,452 INFO L242 Difference]: Finished difference. Result has 265 places, 166 transitions, 709 flow [2022-01-19 13:16:25,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=709, PETRI_PLACES=265, PETRI_TRANSITIONS=166} [2022-01-19 13:16:25,453 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 106 predicate places. [2022-01-19 13:16:25,453 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 166 transitions, 709 flow [2022-01-19 13:16:25,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:25,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:25,454 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] [2022-01-19 13:16:25,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 13:16:25,454 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 444470777, now seen corresponding path program 2 times [2022-01-19 13:16:25,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:25,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16876415] [2022-01-19 13:16:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:25,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:25,958 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 13:16:25,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16876415] [2022-01-19 13:16:25,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16876415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:25,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:25,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:25,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007791222] [2022-01-19 13:16:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:25,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:25,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:25,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:25,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:25,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:25,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 166 transitions, 709 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:25,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:25,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:25,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:28,783 INFO L129 PetriNetUnfolder]: 812/2783 cut-off events. [2022-01-19 13:16:28,784 INFO L130 PetriNetUnfolder]: For 11971/11973 co-relation queries the response was YES. [2022-01-19 13:16:28,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8930 conditions, 2783 events. 812/2783 cut-off events. For 11971/11973 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 21223 event pairs, 139 based on Foata normal form. 1/2725 useless extension candidates. Maximal degree in co-relation 8851. Up to 493 conditions per place. [2022-01-19 13:16:28,804 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 283 selfloop transitions, 32 changer transitions 39/441 dead transitions. [2022-01-19 13:16:28,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 441 transitions, 3132 flow [2022-01-19 13:16:28,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4065 transitions. [2022-01-19 13:16:28,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6599025974025974 [2022-01-19 13:16:28,807 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4065 transitions. [2022-01-19 13:16:28,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4065 transitions. [2022-01-19 13:16:28,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:28,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4065 transitions. [2022-01-19 13:16:28,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.14285714285714) internal successors, (4065), 35 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:28,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:28,814 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:28,815 INFO L186 Difference]: Start difference. First operand has 265 places, 166 transitions, 709 flow. Second operand 35 states and 4065 transitions. [2022-01-19 13:16:28,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 441 transitions, 3132 flow [2022-01-19 13:16:28,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 441 transitions, 2647 flow, removed 215 selfloop flow, removed 27 redundant places. [2022-01-19 13:16:28,849 INFO L242 Difference]: Finished difference. Result has 278 places, 197 transitions, 1037 flow [2022-01-19 13:16:28,850 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1037, PETRI_PLACES=278, PETRI_TRANSITIONS=197} [2022-01-19 13:16:28,850 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2022-01-19 13:16:28,850 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 197 transitions, 1037 flow [2022-01-19 13:16:28,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:28,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:28,851 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] [2022-01-19 13:16:28,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 13:16:28,851 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1628285391, now seen corresponding path program 3 times [2022-01-19 13:16:28,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:28,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422213095] [2022-01-19 13:16:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:28,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:29,306 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 13:16:29,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422213095] [2022-01-19 13:16:29,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422213095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:29,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:29,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:29,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541607471] [2022-01-19 13:16:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:29,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:29,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:29,309 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:29,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 197 transitions, 1037 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:29,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:29,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:29,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:31,774 INFO L129 PetriNetUnfolder]: 840/2945 cut-off events. [2022-01-19 13:16:31,775 INFO L130 PetriNetUnfolder]: For 11889/11894 co-relation queries the response was YES. [2022-01-19 13:16:31,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 2945 events. 840/2945 cut-off events. For 11889/11894 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 22734 event pairs, 93 based on Foata normal form. 1/2858 useless extension candidates. Maximal degree in co-relation 9829. Up to 364 conditions per place. [2022-01-19 13:16:31,797 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 209 selfloop transitions, 66 changer transitions 40/402 dead transitions. [2022-01-19 13:16:31,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 402 transitions, 3045 flow [2022-01-19 13:16:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2022-01-19 13:16:31,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2022-01-19 13:16:31,800 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2022-01-19 13:16:31,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2022-01-19 13:16:31,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:31,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2022-01-19 13:16:31,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:31,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:31,806 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:31,806 INFO L186 Difference]: Start difference. First operand has 278 places, 197 transitions, 1037 flow. Second operand 35 states and 3991 transitions. [2022-01-19 13:16:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 402 transitions, 3045 flow [2022-01-19 13:16:31,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 402 transitions, 2763 flow, removed 140 selfloop flow, removed 16 redundant places. [2022-01-19 13:16:31,842 INFO L242 Difference]: Finished difference. Result has 305 places, 219 transitions, 1311 flow [2022-01-19 13:16:31,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1311, PETRI_PLACES=305, PETRI_TRANSITIONS=219} [2022-01-19 13:16:31,842 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2022-01-19 13:16:31,843 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 219 transitions, 1311 flow [2022-01-19 13:16:31,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:31,843 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:31,843 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] [2022-01-19 13:16:31,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 13:16:31,844 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1607873181, now seen corresponding path program 4 times [2022-01-19 13:16:31,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:31,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698602512] [2022-01-19 13:16:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:31,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:32,273 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 13:16:32,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:32,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698602512] [2022-01-19 13:16:32,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698602512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:32,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:32,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:32,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323262326] [2022-01-19 13:16:32,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:32,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:32,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:32,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:32,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:32,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 219 transitions, 1311 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:32,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:32,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:32,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:36,586 INFO L129 PetriNetUnfolder]: 883/3117 cut-off events. [2022-01-19 13:16:36,586 INFO L130 PetriNetUnfolder]: For 14778/14784 co-relation queries the response was YES. [2022-01-19 13:16:36,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11302 conditions, 3117 events. 883/3117 cut-off events. For 14778/14784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24389 event pairs, 91 based on Foata normal form. 3/3066 useless extension candidates. Maximal degree in co-relation 11205. Up to 309 conditions per place. [2022-01-19 13:16:36,612 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 43 changer transitions 124/615 dead transitions. [2022-01-19 13:16:36,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 615 transitions, 5729 flow [2022-01-19 13:16:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-19 13:16:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-01-19 13:16:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2022-01-19 13:16:36,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2022-01-19 13:16:36,617 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2022-01-19 13:16:36,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2022-01-19 13:16:36,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:36,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2022-01-19 13:16:36,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:36,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:36,627 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:36,627 INFO L186 Difference]: Start difference. First operand has 305 places, 219 transitions, 1311 flow. Second operand 65 states and 7313 transitions. [2022-01-19 13:16:36,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 615 transitions, 5729 flow [2022-01-19 13:16:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 615 transitions, 4989 flow, removed 118 selfloop flow, removed 20 redundant places. [2022-01-19 13:16:36,675 INFO L242 Difference]: Finished difference. Result has 387 places, 219 transitions, 1298 flow [2022-01-19 13:16:36,675 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1298, PETRI_PLACES=387, PETRI_TRANSITIONS=219} [2022-01-19 13:16:36,675 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 228 predicate places. [2022-01-19 13:16:36,676 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 219 transitions, 1298 flow [2022-01-19 13:16:36,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:36,676 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:36,676 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] [2022-01-19 13:16:36,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 13:16:36,676 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1990567509, now seen corresponding path program 5 times [2022-01-19 13:16:36,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846775106] [2022-01-19 13:16:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:36,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:37,164 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 13:16:37,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:37,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846775106] [2022-01-19 13:16:37,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846775106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:37,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:37,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:37,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758470257] [2022-01-19 13:16:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:37,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:37,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:37,168 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:37,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 219 transitions, 1298 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:37,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:37,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:37,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:40,448 INFO L129 PetriNetUnfolder]: 997/3471 cut-off events. [2022-01-19 13:16:40,448 INFO L130 PetriNetUnfolder]: For 28322/28327 co-relation queries the response was YES. [2022-01-19 13:16:40,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 3471 events. 997/3471 cut-off events. For 28322/28327 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 28326 event pairs, 211 based on Foata normal form. 3/3398 useless extension candidates. Maximal degree in co-relation 14518. Up to 591 conditions per place. [2022-01-19 13:16:40,485 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 329 selfloop transitions, 34 changer transitions 39/489 dead transitions. [2022-01-19 13:16:40,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 489 transitions, 4671 flow [2022-01-19 13:16:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4068 transitions. [2022-01-19 13:16:40,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6603896103896104 [2022-01-19 13:16:40,488 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4068 transitions. [2022-01-19 13:16:40,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4068 transitions. [2022-01-19 13:16:40,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:40,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4068 transitions. [2022-01-19 13:16:40,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.22857142857143) internal successors, (4068), 35 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 13:16:40,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:40,494 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:40,494 INFO L186 Difference]: Start difference. First operand has 387 places, 219 transitions, 1298 flow. Second operand 35 states and 4068 transitions. [2022-01-19 13:16:40,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 489 transitions, 4671 flow [2022-01-19 13:16:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 489 transitions, 3888 flow, removed 265 selfloop flow, removed 60 redundant places. [2022-01-19 13:16:40,573 INFO L242 Difference]: Finished difference. Result has 338 places, 244 transitions, 1596 flow [2022-01-19 13:16:40,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1596, PETRI_PLACES=338, PETRI_TRANSITIONS=244} [2022-01-19 13:16:40,573 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 179 predicate places. [2022-01-19 13:16:40,573 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 244 transitions, 1596 flow [2022-01-19 13:16:40,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:40,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:40,574 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] [2022-01-19 13:16:40,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 13:16:40,574 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 603582109, now seen corresponding path program 6 times [2022-01-19 13:16:40,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:40,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366169270] [2022-01-19 13:16:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:40,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:41,003 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 13:16:41,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:41,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366169270] [2022-01-19 13:16:41,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366169270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:41,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:41,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:41,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321576068] [2022-01-19 13:16:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:41,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:41,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:41,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:41,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 244 transitions, 1596 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:41,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:41,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:41,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:43,910 INFO L129 PetriNetUnfolder]: 1088/3774 cut-off events. [2022-01-19 13:16:43,910 INFO L130 PetriNetUnfolder]: For 29016/29021 co-relation queries the response was YES. [2022-01-19 13:16:43,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15394 conditions, 3774 events. 1088/3774 cut-off events. For 29016/29021 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 31277 event pairs, 150 based on Foata normal form. 1/3643 useless extension candidates. Maximal degree in co-relation 15277. Up to 677 conditions per place. [2022-01-19 13:16:43,945 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 269 selfloop transitions, 60 changer transitions 44/460 dead transitions. [2022-01-19 13:16:43,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 460 transitions, 4453 flow [2022-01-19 13:16:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2022-01-19 13:16:43,948 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2022-01-19 13:16:43,948 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2022-01-19 13:16:43,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2022-01-19 13:16:43,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:43,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2022-01-19 13:16:43,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:43,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:43,954 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:43,954 INFO L186 Difference]: Start difference. First operand has 338 places, 244 transitions, 1596 flow. Second operand 35 states and 4007 transitions. [2022-01-19 13:16:43,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 460 transitions, 4453 flow [2022-01-19 13:16:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 460 transitions, 4099 flow, removed 155 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:44,029 INFO L242 Difference]: Finished difference. Result has 363 places, 269 transitions, 1946 flow [2022-01-19 13:16:44,029 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1946, PETRI_PLACES=363, PETRI_TRANSITIONS=269} [2022-01-19 13:16:44,029 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 204 predicate places. [2022-01-19 13:16:44,029 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 269 transitions, 1946 flow [2022-01-19 13:16:44,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:44,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:44,030 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] [2022-01-19 13:16:44,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 13:16:44,030 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1760046429, now seen corresponding path program 7 times [2022-01-19 13:16:44,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:44,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983677725] [2022-01-19 13:16:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:44,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:44,514 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 13:16:44,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983677725] [2022-01-19 13:16:44,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983677725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:44,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:44,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:44,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200948523] [2022-01-19 13:16:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:44,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:44,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:44,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:44,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 269 transitions, 1946 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:44,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:44,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:44,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:47,516 INFO L129 PetriNetUnfolder]: 1172/3935 cut-off events. [2022-01-19 13:16:47,517 INFO L130 PetriNetUnfolder]: For 38389/38394 co-relation queries the response was YES. [2022-01-19 13:16:47,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18047 conditions, 3935 events. 1172/3935 cut-off events. For 38389/38394 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 32575 event pairs, 168 based on Foata normal form. 3/3871 useless extension candidates. Maximal degree in co-relation 17920. Up to 633 conditions per place. [2022-01-19 13:16:47,573 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 361 selfloop transitions, 63 changer transitions 36/547 dead transitions. [2022-01-19 13:16:47,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 547 transitions, 6087 flow [2022-01-19 13:16:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4001 transitions. [2022-01-19 13:16:47,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.649512987012987 [2022-01-19 13:16:47,576 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4001 transitions. [2022-01-19 13:16:47,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4001 transitions. [2022-01-19 13:16:47,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:47,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4001 transitions. [2022-01-19 13:16:47,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.31428571428572) internal successors, (4001), 35 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:47,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:47,585 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:47,585 INFO L186 Difference]: Start difference. First operand has 363 places, 269 transitions, 1946 flow. Second operand 35 states and 4001 transitions. [2022-01-19 13:16:47,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 547 transitions, 6087 flow [2022-01-19 13:16:47,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 547 transitions, 5421 flow, removed 202 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:47,696 INFO L242 Difference]: Finished difference. Result has 388 places, 293 transitions, 2351 flow [2022-01-19 13:16:47,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2351, PETRI_PLACES=388, PETRI_TRANSITIONS=293} [2022-01-19 13:16:47,697 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 229 predicate places. [2022-01-19 13:16:47,697 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 293 transitions, 2351 flow [2022-01-19 13:16:47,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:47,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:47,698 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] [2022-01-19 13:16:47,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 13:16:47,698 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -330972291, now seen corresponding path program 8 times [2022-01-19 13:16:47,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:47,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432287398] [2022-01-19 13:16:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:47,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:48,135 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 13:16:48,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:48,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432287398] [2022-01-19 13:16:48,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432287398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:48,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:48,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:48,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546615306] [2022-01-19 13:16:48,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:48,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:48,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:48,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:48,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 293 transitions, 2351 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:48,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:48,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:48,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:51,252 INFO L129 PetriNetUnfolder]: 1313/4453 cut-off events. [2022-01-19 13:16:51,253 INFO L130 PetriNetUnfolder]: For 50785/50790 co-relation queries the response was YES. [2022-01-19 13:16:51,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20943 conditions, 4453 events. 1313/4453 cut-off events. For 50785/50790 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 38201 event pairs, 229 based on Foata normal form. 1/4304 useless extension candidates. Maximal degree in co-relation 20804. Up to 1198 conditions per place. [2022-01-19 13:16:51,304 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 335 selfloop transitions, 57 changer transitions 44/523 dead transitions. [2022-01-19 13:16:51,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 523 transitions, 6112 flow [2022-01-19 13:16:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2022-01-19 13:16:51,306 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2022-01-19 13:16:51,307 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2022-01-19 13:16:51,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2022-01-19 13:16:51,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:51,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2022-01-19 13:16:51,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:51,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:51,312 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:51,312 INFO L186 Difference]: Start difference. First operand has 388 places, 293 transitions, 2351 flow. Second operand 35 states and 4011 transitions. [2022-01-19 13:16:51,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 523 transitions, 6112 flow [2022-01-19 13:16:51,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 523 transitions, 5558 flow, removed 175 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:51,477 INFO L242 Difference]: Finished difference. Result has 415 places, 320 transitions, 2659 flow [2022-01-19 13:16:51,478 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2659, PETRI_PLACES=415, PETRI_TRANSITIONS=320} [2022-01-19 13:16:51,478 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 256 predicate places. [2022-01-19 13:16:51,478 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 320 transitions, 2659 flow [2022-01-19 13:16:51,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:51,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:51,479 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] [2022-01-19 13:16:51,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 13:16:51,479 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1307403661, now seen corresponding path program 9 times [2022-01-19 13:16:51,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294922021] [2022-01-19 13:16:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:51,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:51,974 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 13:16:51,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:51,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294922021] [2022-01-19 13:16:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294922021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:51,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547699465] [2022-01-19 13:16:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:51,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:51,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:51,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:51,977 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:51,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 320 transitions, 2659 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:51,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:51,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:51,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:55,386 INFO L129 PetriNetUnfolder]: 1443/4779 cut-off events. [2022-01-19 13:16:55,386 INFO L130 PetriNetUnfolder]: For 68795/68804 co-relation queries the response was YES. [2022-01-19 13:16:55,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24722 conditions, 4779 events. 1443/4779 cut-off events. For 68795/68804 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 41131 event pairs, 294 based on Foata normal form. 5/4692 useless extension candidates. Maximal degree in co-relation 24569. Up to 1220 conditions per place. [2022-01-19 13:16:55,452 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 412 selfloop transitions, 61 changer transitions 36/596 dead transitions. [2022-01-19 13:16:55,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 596 transitions, 7408 flow [2022-01-19 13:16:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2022-01-19 13:16:55,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-01-19 13:16:55,454 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2022-01-19 13:16:55,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2022-01-19 13:16:55,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:55,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2022-01-19 13:16:55,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:55,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:55,460 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:55,460 INFO L186 Difference]: Start difference. First operand has 415 places, 320 transitions, 2659 flow. Second operand 35 states and 4004 transitions. [2022-01-19 13:16:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 596 transitions, 7408 flow [2022-01-19 13:16:55,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 596 transitions, 6681 flow, removed 280 selfloop flow, removed 19 redundant places. [2022-01-19 13:16:55,728 INFO L242 Difference]: Finished difference. Result has 442 places, 346 transitions, 3132 flow [2022-01-19 13:16:55,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3132, PETRI_PLACES=442, PETRI_TRANSITIONS=346} [2022-01-19 13:16:55,728 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 283 predicate places. [2022-01-19 13:16:55,728 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 346 transitions, 3132 flow [2022-01-19 13:16:55,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:55,729 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:16:55,729 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] [2022-01-19 13:16:55,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 13:16:55,729 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:16:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:16:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1590830695, now seen corresponding path program 10 times [2022-01-19 13:16:55,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:16:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512252344] [2022-01-19 13:16:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:16:55,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:16:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:16:56,217 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 13:16:56,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:16:56,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512252344] [2022-01-19 13:16:56,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512252344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:16:56,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:16:56,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:16:56,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028092450] [2022-01-19 13:16:56,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:16:56,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:16:56,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:16:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:16:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:16:56,221 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:16:56,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 346 transitions, 3132 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:56,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:16:56,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:16:56,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:16:59,883 INFO L129 PetriNetUnfolder]: 1711/5691 cut-off events. [2022-01-19 13:16:59,883 INFO L130 PetriNetUnfolder]: For 92803/92812 co-relation queries the response was YES. [2022-01-19 13:16:59,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29920 conditions, 5691 events. 1711/5691 cut-off events. For 92803/92812 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 51296 event pairs, 362 based on Foata normal form. 1/5516 useless extension candidates. Maximal degree in co-relation 29754. Up to 1116 conditions per place. [2022-01-19 13:16:59,961 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 404 selfloop transitions, 103 changer transitions 40/634 dead transitions. [2022-01-19 13:16:59,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 634 transitions, 8420 flow [2022-01-19 13:16:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:16:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:16:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2022-01-19 13:16:59,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2022-01-19 13:16:59,963 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2022-01-19 13:16:59,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2022-01-19 13:16:59,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:16:59,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2022-01-19 13:16:59,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:59,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:59,969 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:16:59,969 INFO L186 Difference]: Start difference. First operand has 442 places, 346 transitions, 3132 flow. Second operand 35 states and 4024 transitions. [2022-01-19 13:16:59,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 634 transitions, 8420 flow [2022-01-19 13:17:00,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 634 transitions, 7687 flow, removed 298 selfloop flow, removed 19 redundant places. [2022-01-19 13:17:00,293 INFO L242 Difference]: Finished difference. Result has 474 places, 377 transitions, 3713 flow [2022-01-19 13:17:00,294 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3713, PETRI_PLACES=474, PETRI_TRANSITIONS=377} [2022-01-19 13:17:00,294 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 315 predicate places. [2022-01-19 13:17:00,294 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 377 transitions, 3713 flow [2022-01-19 13:17:00,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:00,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:00,295 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] [2022-01-19 13:17:00,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 13:17:00,295 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 118525987, now seen corresponding path program 11 times [2022-01-19 13:17:00,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:00,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243410113] [2022-01-19 13:17:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:00,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:00,749 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 13:17:00,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:00,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243410113] [2022-01-19 13:17:00,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243410113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:00,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:00,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:00,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220624490] [2022-01-19 13:17:00,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:00,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:00,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:00,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:00,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 377 transitions, 3713 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:00,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:00,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:00,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:06,220 INFO L129 PetriNetUnfolder]: 1895/6313 cut-off events. [2022-01-19 13:17:06,220 INFO L130 PetriNetUnfolder]: For 127531/127539 co-relation queries the response was YES. [2022-01-19 13:17:06,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36432 conditions, 6313 events. 1895/6313 cut-off events. For 127531/127539 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 58377 event pairs, 480 based on Foata normal form. 5/6200 useless extension candidates. Maximal degree in co-relation 36248. Up to 2135 conditions per place. [2022-01-19 13:17:06,310 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 538 selfloop transitions, 35 changer transitions 112/772 dead transitions. [2022-01-19 13:17:06,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 772 transitions, 10935 flow [2022-01-19 13:17:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-19 13:17:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-01-19 13:17:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7020 transitions. [2022-01-19 13:17:06,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6433284457478006 [2022-01-19 13:17:06,316 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7020 transitions. [2022-01-19 13:17:06,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7020 transitions. [2022-01-19 13:17:06,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:06,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7020 transitions. [2022-01-19 13:17:06,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.2258064516129) internal successors, (7020), 62 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:06,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:06,327 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:06,327 INFO L186 Difference]: Start difference. First operand has 474 places, 377 transitions, 3713 flow. Second operand 62 states and 7020 transitions. [2022-01-19 13:17:06,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 772 transitions, 10935 flow [2022-01-19 13:17:06,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 772 transitions, 10077 flow, removed 426 selfloop flow, removed 16 redundant places. [2022-01-19 13:17:06,990 INFO L242 Difference]: Finished difference. Result has 561 places, 386 transitions, 3823 flow [2022-01-19 13:17:06,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=3823, PETRI_PLACES=561, PETRI_TRANSITIONS=386} [2022-01-19 13:17:06,991 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 402 predicate places. [2022-01-19 13:17:06,991 INFO L470 AbstractCegarLoop]: Abstraction has has 561 places, 386 transitions, 3823 flow [2022-01-19 13:17:06,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:06,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:06,991 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] [2022-01-19 13:17:06,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 13:17:06,992 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -811381305, now seen corresponding path program 12 times [2022-01-19 13:17:06,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988441291] [2022-01-19 13:17:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:06,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:07,484 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 13:17:07,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:07,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988441291] [2022-01-19 13:17:07,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988441291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:07,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:07,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:07,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727442119] [2022-01-19 13:17:07,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:07,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:07,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:07,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:07,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:07,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 386 transitions, 3823 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:07,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:07,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:07,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:11,913 INFO L129 PetriNetUnfolder]: 2012/6943 cut-off events. [2022-01-19 13:17:11,913 INFO L130 PetriNetUnfolder]: For 226317/226329 co-relation queries the response was YES. [2022-01-19 13:17:12,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44312 conditions, 6943 events. 2012/6943 cut-off events. For 226317/226329 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 66247 event pairs, 522 based on Foata normal form. 1/6691 useless extension candidates. Maximal degree in co-relation 44086. Up to 2306 conditions per place. [2022-01-19 13:17:12,045 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 469 selfloop transitions, 58 changer transitions 48/662 dead transitions. [2022-01-19 13:17:12,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 662 transitions, 10310 flow [2022-01-19 13:17:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:17:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:17:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2022-01-19 13:17:12,048 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2022-01-19 13:17:12,048 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2022-01-19 13:17:12,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2022-01-19 13:17:12,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:12,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2022-01-19 13:17:12,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:12,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:12,054 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:12,054 INFO L186 Difference]: Start difference. First operand has 561 places, 386 transitions, 3823 flow. Second operand 35 states and 4027 transitions. [2022-01-19 13:17:12,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 662 transitions, 10310 flow [2022-01-19 13:17:13,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 662 transitions, 9584 flow, removed 317 selfloop flow, removed 31 redundant places. [2022-01-19 13:17:13,030 INFO L242 Difference]: Finished difference. Result has 545 places, 414 transitions, 4486 flow [2022-01-19 13:17:13,030 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4486, PETRI_PLACES=545, PETRI_TRANSITIONS=414} [2022-01-19 13:17:13,031 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 386 predicate places. [2022-01-19 13:17:13,031 INFO L470 AbstractCegarLoop]: Abstraction has has 545 places, 414 transitions, 4486 flow [2022-01-19 13:17:13,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:13,031 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:13,031 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] [2022-01-19 13:17:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 13:17:13,032 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354953, now seen corresponding path program 13 times [2022-01-19 13:17:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:13,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156639156] [2022-01-19 13:17:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:13,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:13,532 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 13:17:13,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:13,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156639156] [2022-01-19 13:17:13,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156639156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:13,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:13,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:13,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930160937] [2022-01-19 13:17:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:13,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:13,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:13,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:13,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 414 transitions, 4486 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:13,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:13,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:13,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:18,225 INFO L129 PetriNetUnfolder]: 2216/7378 cut-off events. [2022-01-19 13:17:18,225 INFO L130 PetriNetUnfolder]: For 243293/243307 co-relation queries the response was YES. [2022-01-19 13:17:18,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49416 conditions, 7378 events. 2216/7378 cut-off events. For 243293/243307 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 70824 event pairs, 913 based on Foata normal form. 5/7241 useless extension candidates. Maximal degree in co-relation 49188. Up to 2981 conditions per place. [2022-01-19 13:17:18,359 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 519 selfloop transitions, 51 changer transitions 36/693 dead transitions. [2022-01-19 13:17:18,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 693 transitions, 10665 flow [2022-01-19 13:17:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:17:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:17:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2022-01-19 13:17:18,362 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2022-01-19 13:17:18,362 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2022-01-19 13:17:18,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2022-01-19 13:17:18,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:18,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2022-01-19 13:17:18,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:18,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:18,368 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:18,368 INFO L186 Difference]: Start difference. First operand has 545 places, 414 transitions, 4486 flow. Second operand 35 states and 4036 transitions. [2022-01-19 13:17:18,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 693 transitions, 10665 flow [2022-01-19 13:17:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 693 transitions, 9921 flow, removed 318 selfloop flow, removed 19 redundant places. [2022-01-19 13:17:19,571 INFO L242 Difference]: Finished difference. Result has 575 places, 442 transitions, 5240 flow [2022-01-19 13:17:19,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5240, PETRI_PLACES=575, PETRI_TRANSITIONS=442} [2022-01-19 13:17:19,572 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 416 predicate places. [2022-01-19 13:17:19,572 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 442 transitions, 5240 flow [2022-01-19 13:17:19,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:19,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:19,573 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] [2022-01-19 13:17:19,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 13:17:19,573 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:19,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash -699537635, now seen corresponding path program 14 times [2022-01-19 13:17:19,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:19,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404109150] [2022-01-19 13:17:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:19,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:17:20,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404109150] [2022-01-19 13:17:20,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404109150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:20,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:20,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:20,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572586097] [2022-01-19 13:17:20,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:20,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:20,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:20,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 442 transitions, 5240 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:20,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:20,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:20,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:25,011 INFO L129 PetriNetUnfolder]: 2419/8231 cut-off events. [2022-01-19 13:17:25,011 INFO L130 PetriNetUnfolder]: For 289417/289437 co-relation queries the response was YES. [2022-01-19 13:17:25,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55178 conditions, 8231 events. 2419/8231 cut-off events. For 289417/289437 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 81263 event pairs, 849 based on Foata normal form. 3/7947 useless extension candidates. Maximal degree in co-relation 54935. Up to 3258 conditions per place. [2022-01-19 13:17:25,186 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 541 selfloop transitions, 56 changer transitions 48/732 dead transitions. [2022-01-19 13:17:25,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 732 transitions, 12273 flow [2022-01-19 13:17:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:17:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:17:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2022-01-19 13:17:25,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2022-01-19 13:17:25,189 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2022-01-19 13:17:25,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2022-01-19 13:17:25,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:25,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2022-01-19 13:17:25,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:25,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:25,195 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:25,195 INFO L186 Difference]: Start difference. First operand has 575 places, 442 transitions, 5240 flow. Second operand 35 states and 4043 transitions. [2022-01-19 13:17:25,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 732 transitions, 12273 flow [2022-01-19 13:17:26,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 732 transitions, 11244 flow, removed 483 selfloop flow, removed 18 redundant places. [2022-01-19 13:17:26,718 INFO L242 Difference]: Finished difference. Result has 606 places, 471 transitions, 5439 flow [2022-01-19 13:17:26,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4510, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5439, PETRI_PLACES=606, PETRI_TRANSITIONS=471} [2022-01-19 13:17:26,719 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 447 predicate places. [2022-01-19 13:17:26,719 INFO L470 AbstractCegarLoop]: Abstraction has has 606 places, 471 transitions, 5439 flow [2022-01-19 13:17:26,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:26,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:26,719 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] [2022-01-19 13:17:26,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 13:17:26,720 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1170005665, now seen corresponding path program 15 times [2022-01-19 13:17:26,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384840994] [2022-01-19 13:17:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:26,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:27,205 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 13:17:27,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:27,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384840994] [2022-01-19 13:17:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384840994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:27,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:27,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:27,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303580895] [2022-01-19 13:17:27,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:27,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:27,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:27,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:27,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 471 transitions, 5439 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:27,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:27,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:27,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:32,580 INFO L129 PetriNetUnfolder]: 2490/8185 cut-off events. [2022-01-19 13:17:32,580 INFO L130 PetriNetUnfolder]: For 322755/322776 co-relation queries the response was YES. [2022-01-19 13:17:32,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58380 conditions, 8185 events. 2490/8185 cut-off events. For 322755/322776 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 79835 event pairs, 1149 based on Foata normal form. 9/8015 useless extension candidates. Maximal degree in co-relation 58122. Up to 3342 conditions per place. [2022-01-19 13:17:32,749 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 590 selfloop transitions, 55 changer transitions 36/768 dead transitions. [2022-01-19 13:17:32,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 768 transitions, 12333 flow [2022-01-19 13:17:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:17:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:17:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4048 transitions. [2022-01-19 13:17:32,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2022-01-19 13:17:32,752 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4048 transitions. [2022-01-19 13:17:32,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4048 transitions. [2022-01-19 13:17:32,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:32,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4048 transitions. [2022-01-19 13:17:32,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.65714285714286) internal successors, (4048), 35 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:32,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:32,757 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:32,757 INFO L186 Difference]: Start difference. First operand has 606 places, 471 transitions, 5439 flow. Second operand 35 states and 4048 transitions. [2022-01-19 13:17:32,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 768 transitions, 12333 flow [2022-01-19 13:17:34,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 768 transitions, 11553 flow, removed 354 selfloop flow, removed 18 redundant places. [2022-01-19 13:17:34,537 INFO L242 Difference]: Finished difference. Result has 631 places, 493 transitions, 5911 flow [2022-01-19 13:17:34,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4873, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5911, PETRI_PLACES=631, PETRI_TRANSITIONS=493} [2022-01-19 13:17:34,538 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 472 predicate places. [2022-01-19 13:17:34,538 INFO L470 AbstractCegarLoop]: Abstraction has has 631 places, 493 transitions, 5911 flow [2022-01-19 13:17:34,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:34,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:34,539 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] [2022-01-19 13:17:34,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 13:17:34,539 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1067004845, now seen corresponding path program 16 times [2022-01-19 13:17:34,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:34,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801775550] [2022-01-19 13:17:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:34,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:35,051 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 13:17:35,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801775550] [2022-01-19 13:17:35,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801775550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:35,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:35,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:35,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788446498] [2022-01-19 13:17:35,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:35,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:35,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:35,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:35,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:35,054 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:35,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 493 transitions, 5911 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:35,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:35,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:35,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:42,749 INFO L129 PetriNetUnfolder]: 3021/10115 cut-off events. [2022-01-19 13:17:42,749 INFO L130 PetriNetUnfolder]: For 411229/411252 co-relation queries the response was YES. [2022-01-19 13:17:42,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72424 conditions, 10115 events. 3021/10115 cut-off events. For 411229/411252 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 103491 event pairs, 1276 based on Foata normal form. 5/9768 useless extension candidates. Maximal degree in co-relation 72157. Up to 3584 conditions per place. [2022-01-19 13:17:42,982 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 665 selfloop transitions, 35 changer transitions 81/868 dead transitions. [2022-01-19 13:17:42,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 868 transitions, 14404 flow [2022-01-19 13:17:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:17:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:17:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6076 transitions. [2022-01-19 13:17:42,987 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6513722126929674 [2022-01-19 13:17:42,987 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6076 transitions. [2022-01-19 13:17:42,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6076 transitions. [2022-01-19 13:17:42,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:42,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6076 transitions. [2022-01-19 13:17:42,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.64150943396227) internal successors, (6076), 53 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:42,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:42,999 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:42,999 INFO L186 Difference]: Start difference. First operand has 631 places, 493 transitions, 5911 flow. Second operand 53 states and 6076 transitions. [2022-01-19 13:17:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 868 transitions, 14404 flow [2022-01-19 13:17:45,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 868 transitions, 13635 flow, removed 337 selfloop flow, removed 20 redundant places. [2022-01-19 13:17:45,633 INFO L242 Difference]: Finished difference. Result has 698 places, 507 transitions, 5944 flow [2022-01-19 13:17:45,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5944, PETRI_PLACES=698, PETRI_TRANSITIONS=507} [2022-01-19 13:17:45,634 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 539 predicate places. [2022-01-19 13:17:45,634 INFO L470 AbstractCegarLoop]: Abstraction has has 698 places, 507 transitions, 5944 flow [2022-01-19 13:17:45,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:45,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:45,635 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] [2022-01-19 13:17:45,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 13:17:45,635 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 991624865, now seen corresponding path program 17 times [2022-01-19 13:17:45,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:45,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340554547] [2022-01-19 13:17:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:45,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:46,082 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 13:17:46,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:46,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340554547] [2022-01-19 13:17:46,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340554547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:46,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:46,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:46,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090666062] [2022-01-19 13:17:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:46,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:46,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:46,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:46,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:46,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 507 transitions, 5944 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:46,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:46,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:46,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:17:53,571 INFO L129 PetriNetUnfolder]: 3095/10423 cut-off events. [2022-01-19 13:17:53,572 INFO L130 PetriNetUnfolder]: For 559101/559125 co-relation queries the response was YES. [2022-01-19 13:17:53,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81555 conditions, 10423 events. 3095/10423 cut-off events. For 559101/559125 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 107767 event pairs, 1220 based on Foata normal form. 11/10228 useless extension candidates. Maximal degree in co-relation 81251. Up to 4409 conditions per place. [2022-01-19 13:17:53,824 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 638 selfloop transitions, 74 changer transitions 59/858 dead transitions. [2022-01-19 13:17:53,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 858 transitions, 15136 flow [2022-01-19 13:17:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-19 13:17:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-01-19 13:17:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5360 transitions. [2022-01-19 13:17:53,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6479690522243714 [2022-01-19 13:17:53,828 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5360 transitions. [2022-01-19 13:17:53,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5360 transitions. [2022-01-19 13:17:53,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:17:53,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5360 transitions. [2022-01-19 13:17:53,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 114.04255319148936) internal successors, (5360), 47 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:53,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:53,836 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 176.0) internal successors, (8448), 48 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:53,836 INFO L186 Difference]: Start difference. First operand has 698 places, 507 transitions, 5944 flow. Second operand 47 states and 5360 transitions. [2022-01-19 13:17:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 858 transitions, 15136 flow [2022-01-19 13:17:57,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 858 transitions, 14697 flow, removed 203 selfloop flow, removed 26 redundant places. [2022-01-19 13:17:57,225 INFO L242 Difference]: Finished difference. Result has 721 places, 528 transitions, 6760 flow [2022-01-19 13:17:57,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=6760, PETRI_PLACES=721, PETRI_TRANSITIONS=528} [2022-01-19 13:17:57,226 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 562 predicate places. [2022-01-19 13:17:57,226 INFO L470 AbstractCegarLoop]: Abstraction has has 721 places, 528 transitions, 6760 flow [2022-01-19 13:17:57,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:57,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:17:57,226 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] [2022-01-19 13:17:57,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 13:17:57,227 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:17:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:17:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2121014501, now seen corresponding path program 18 times [2022-01-19 13:17:57,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:17:57,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363193063] [2022-01-19 13:17:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:17:57,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:17:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:17:57,651 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 13:17:57,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:17:57,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363193063] [2022-01-19 13:17:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363193063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:17:57,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:17:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:17:57,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071506450] [2022-01-19 13:17:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:17:57,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:17:57,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:17:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:17:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:17:57,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:17:57,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 721 places, 528 transitions, 6760 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:17:57,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:17:57,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:17:57,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:04,975 INFO L129 PetriNetUnfolder]: 3366/11066 cut-off events. [2022-01-19 13:18:04,976 INFO L130 PetriNetUnfolder]: For 598383/598412 co-relation queries the response was YES. [2022-01-19 13:18:05,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89510 conditions, 11066 events. 3366/11066 cut-off events. For 598383/598412 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 114942 event pairs, 2181 based on Foata normal form. 5/10743 useless extension candidates. Maximal degree in co-relation 89191. Up to 3666 conditions per place. [2022-01-19 13:18:05,260 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 657 selfloop transitions, 43 changer transitions 44/831 dead transitions. [2022-01-19 13:18:05,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 831 transitions, 14905 flow [2022-01-19 13:18:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:18:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:18:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4092 transitions. [2022-01-19 13:18:05,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2022-01-19 13:18:05,263 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4092 transitions. [2022-01-19 13:18:05,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4092 transitions. [2022-01-19 13:18:05,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:05,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4092 transitions. [2022-01-19 13:18:05,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.91428571428571) internal successors, (4092), 35 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:05,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:05,268 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:05,268 INFO L186 Difference]: Start difference. First operand has 721 places, 528 transitions, 6760 flow. Second operand 35 states and 4092 transitions. [2022-01-19 13:18:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 831 transitions, 14905 flow [2022-01-19 13:18:09,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 831 transitions, 14033 flow, removed 385 selfloop flow, removed 31 redundant places. [2022-01-19 13:18:09,203 INFO L242 Difference]: Finished difference. Result has 727 places, 559 transitions, 7237 flow [2022-01-19 13:18:09,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6136, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7237, PETRI_PLACES=727, PETRI_TRANSITIONS=559} [2022-01-19 13:18:09,204 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 568 predicate places. [2022-01-19 13:18:09,204 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 559 transitions, 7237 flow [2022-01-19 13:18:09,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:09,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:09,205 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] [2022-01-19 13:18:09,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 13:18:09,205 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:18:09,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 857333235, now seen corresponding path program 19 times [2022-01-19 13:18:09,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:09,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29865397] [2022-01-19 13:18:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:09,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:09,712 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 13:18:09,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:09,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29865397] [2022-01-19 13:18:09,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29865397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:09,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:09,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:18:09,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205341764] [2022-01-19 13:18:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:09,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:18:09,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:09,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:18:09,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:18:09,715 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:18:09,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 559 transitions, 7237 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:09,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:09,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:18:09,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:17,992 INFO L129 PetriNetUnfolder]: 3661/12196 cut-off events. [2022-01-19 13:18:17,992 INFO L130 PetriNetUnfolder]: For 680291/680322 co-relation queries the response was YES. [2022-01-19 13:18:18,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99463 conditions, 12196 events. 3661/12196 cut-off events. For 680291/680322 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 130288 event pairs, 1386 based on Foata normal form. 15/11971 useless extension candidates. Maximal degree in co-relation 99137. Up to 5008 conditions per place. [2022-01-19 13:18:18,375 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 717 selfloop transitions, 70 changer transitions 39/913 dead transitions. [2022-01-19 13:18:18,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 913 transitions, 16736 flow [2022-01-19 13:18:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:18:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:18:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4296 transitions. [2022-01-19 13:18:18,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6597051597051597 [2022-01-19 13:18:18,378 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4296 transitions. [2022-01-19 13:18:18,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4296 transitions. [2022-01-19 13:18:18,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:18,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4296 transitions. [2022-01-19 13:18:18,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 116.10810810810811) internal successors, (4296), 37 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:18,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:18,386 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:18,386 INFO L186 Difference]: Start difference. First operand has 727 places, 559 transitions, 7237 flow. Second operand 37 states and 4296 transitions. [2022-01-19 13:18:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 913 transitions, 16736 flow [2022-01-19 13:18:22,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 913 transitions, 15892 flow, removed 417 selfloop flow, removed 16 redundant places. [2022-01-19 13:18:22,886 INFO L242 Difference]: Finished difference. Result has 763 places, 586 transitions, 7926 flow [2022-01-19 13:18:22,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7926, PETRI_PLACES=763, PETRI_TRANSITIONS=586} [2022-01-19 13:18:22,888 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 604 predicate places. [2022-01-19 13:18:22,888 INFO L470 AbstractCegarLoop]: Abstraction has has 763 places, 586 transitions, 7926 flow [2022-01-19 13:18:22,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:22,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:22,888 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] [2022-01-19 13:18:22,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 13:18:22,889 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:18:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -38731419, now seen corresponding path program 20 times [2022-01-19 13:18:22,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:22,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340523124] [2022-01-19 13:18:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:22,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:23,328 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 13:18:23,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340523124] [2022-01-19 13:18:23,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340523124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:23,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:23,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:18:23,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709424106] [2022-01-19 13:18:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:23,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:18:23,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:18:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:18:23,331 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:18:23,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 586 transitions, 7926 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:23,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:23,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:18:23,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:31,512 INFO L129 PetriNetUnfolder]: 3738/12289 cut-off events. [2022-01-19 13:18:31,512 INFO L130 PetriNetUnfolder]: For 767031/767066 co-relation queries the response was YES. [2022-01-19 13:18:31,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104361 conditions, 12289 events. 3738/12289 cut-off events. For 767031/767066 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 131469 event pairs, 1611 based on Foata normal form. 5/11865 useless extension candidates. Maximal degree in co-relation 104019. Up to 3686 conditions per place. [2022-01-19 13:18:31,941 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 706 selfloop transitions, 115 changer transitions 43/951 dead transitions. [2022-01-19 13:18:31,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 951 transitions, 18744 flow [2022-01-19 13:18:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:18:31,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:18:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4037 transitions. [2022-01-19 13:18:31,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6553571428571429 [2022-01-19 13:18:31,944 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4037 transitions. [2022-01-19 13:18:31,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4037 transitions. [2022-01-19 13:18:31,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:31,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4037 transitions. [2022-01-19 13:18:31,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.34285714285714) internal successors, (4037), 35 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:31,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:31,951 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:31,951 INFO L186 Difference]: Start difference. First operand has 763 places, 586 transitions, 7926 flow. Second operand 35 states and 4037 transitions. [2022-01-19 13:18:31,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 951 transitions, 18744 flow [2022-01-19 13:18:36,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 951 transitions, 17931 flow, removed 372 selfloop flow, removed 21 redundant places. [2022-01-19 13:18:36,881 INFO L242 Difference]: Finished difference. Result has 783 places, 608 transitions, 8339 flow [2022-01-19 13:18:36,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7309, PETRI_DIFFERENCE_MINUEND_PLACES=725, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8339, PETRI_PLACES=783, PETRI_TRANSITIONS=608} [2022-01-19 13:18:36,882 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 624 predicate places. [2022-01-19 13:18:36,882 INFO L470 AbstractCegarLoop]: Abstraction has has 783 places, 608 transitions, 8339 flow [2022-01-19 13:18:36,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:36,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:36,882 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] [2022-01-19 13:18:36,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 13:18:36,883 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:18:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1945981831, now seen corresponding path program 21 times [2022-01-19 13:18:36,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:36,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585525870] [2022-01-19 13:18:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:36,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:37,343 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 13:18:37,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:37,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585525870] [2022-01-19 13:18:37,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585525870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:37,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:37,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:18:37,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748844497] [2022-01-19 13:18:37,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:37,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:18:37,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:18:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:18:37,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:18:37,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 608 transitions, 8339 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:37,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:37,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:18:37,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:18:45,652 INFO L129 PetriNetUnfolder]: 3757/12483 cut-off events. [2022-01-19 13:18:45,652 INFO L130 PetriNetUnfolder]: For 800795/800827 co-relation queries the response was YES. [2022-01-19 13:18:45,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107627 conditions, 12483 events. 3757/12483 cut-off events. For 800795/800827 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 133792 event pairs, 1437 based on Foata normal form. 11/12248 useless extension candidates. Maximal degree in co-relation 107278. Up to 5158 conditions per place. [2022-01-19 13:18:46,032 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 727 selfloop transitions, 68 changer transitions 40/922 dead transitions. [2022-01-19 13:18:46,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 922 transitions, 17019 flow [2022-01-19 13:18:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:18:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:18:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4033 transitions. [2022-01-19 13:18:46,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6547077922077922 [2022-01-19 13:18:46,035 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4033 transitions. [2022-01-19 13:18:46,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4033 transitions. [2022-01-19 13:18:46,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:18:46,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4033 transitions. [2022-01-19 13:18:46,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.22857142857143) internal successors, (4033), 35 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:46,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:46,041 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:46,041 INFO L186 Difference]: Start difference. First operand has 783 places, 608 transitions, 8339 flow. Second operand 35 states and 4033 transitions. [2022-01-19 13:18:46,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 922 transitions, 17019 flow [2022-01-19 13:18:51,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 782 places, 922 transitions, 16130 flow, removed 321 selfloop flow, removed 20 redundant places. [2022-01-19 13:18:51,325 INFO L242 Difference]: Finished difference. Result has 811 places, 635 transitions, 9159 flow [2022-01-19 13:18:51,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7685, PETRI_DIFFERENCE_MINUEND_PLACES=748, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9159, PETRI_PLACES=811, PETRI_TRANSITIONS=635} [2022-01-19 13:18:51,326 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 652 predicate places. [2022-01-19 13:18:51,326 INFO L470 AbstractCegarLoop]: Abstraction has has 811 places, 635 transitions, 9159 flow [2022-01-19 13:18:51,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:51,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:18:51,327 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] [2022-01-19 13:18:51,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 13:18:51,327 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:18:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:18:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -63014687, now seen corresponding path program 22 times [2022-01-19 13:18:51,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:18:51,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131864347] [2022-01-19 13:18:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:18:51,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:18:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:18:51,834 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 13:18:51,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:18:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131864347] [2022-01-19 13:18:51,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131864347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:18:51,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:18:51,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:18:51,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372770471] [2022-01-19 13:18:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:18:51,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:18:51,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:18:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:18:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:18:51,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:18:51,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 635 transitions, 9159 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:18:51,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:18:51,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:18:51,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:00,740 INFO L129 PetriNetUnfolder]: 4032/13187 cut-off events. [2022-01-19 13:19:00,741 INFO L130 PetriNetUnfolder]: For 907746/907789 co-relation queries the response was YES. [2022-01-19 13:19:01,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117478 conditions, 13187 events. 4032/13187 cut-off events. For 907746/907789 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 142811 event pairs, 2131 based on Foata normal form. 7/12756 useless extension candidates. Maximal degree in co-relation 117114. Up to 3703 conditions per place. [2022-01-19 13:19:01,421 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 756 selfloop transitions, 64 changer transitions 43/950 dead transitions. [2022-01-19 13:19:01,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 950 transitions, 18778 flow [2022-01-19 13:19:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:19:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:19:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4067 transitions. [2022-01-19 13:19:01,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6602272727272728 [2022-01-19 13:19:01,426 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4067 transitions. [2022-01-19 13:19:01,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4067 transitions. [2022-01-19 13:19:01,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:01,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4067 transitions. [2022-01-19 13:19:01,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.2) internal successors, (4067), 35 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:01,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:01,434 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:01,434 INFO L186 Difference]: Start difference. First operand has 811 places, 635 transitions, 9159 flow. Second operand 35 states and 4067 transitions. [2022-01-19 13:19:01,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 950 transitions, 18778 flow [2022-01-19 13:19:07,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 950 transitions, 17813 flow, removed 438 selfloop flow, removed 19 redundant places. [2022-01-19 13:19:08,002 INFO L242 Difference]: Finished difference. Result has 840 places, 662 transitions, 9474 flow [2022-01-19 13:19:08,002 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9474, PETRI_PLACES=840, PETRI_TRANSITIONS=662} [2022-01-19 13:19:08,003 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 681 predicate places. [2022-01-19 13:19:08,003 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 662 transitions, 9474 flow [2022-01-19 13:19:08,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:08,004 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:08,004 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] [2022-01-19 13:19:08,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 13:19:08,004 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:19:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1358484851, now seen corresponding path program 23 times [2022-01-19 13:19:08,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:08,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576921594] [2022-01-19 13:19:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:08,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:08,404 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 13:19:08,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:08,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576921594] [2022-01-19 13:19:08,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576921594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:08,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:08,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:19:08,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833763666] [2022-01-19 13:19:08,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:08,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:19:08,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:19:08,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:19:08,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:19:08,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 662 transitions, 9474 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:08,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:08,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:19:08,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:18,209 INFO L129 PetriNetUnfolder]: 4080/13606 cut-off events. [2022-01-19 13:19:18,210 INFO L130 PetriNetUnfolder]: For 997469/997499 co-relation queries the response was YES. [2022-01-19 13:19:18,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123147 conditions, 13606 events. 4080/13606 cut-off events. For 997469/997499 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 148978 event pairs, 1512 based on Foata normal form. 11/13348 useless extension candidates. Maximal degree in co-relation 122769. Up to 5757 conditions per place. [2022-01-19 13:19:18,672 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 776 selfloop transitions, 78 changer transitions 49/990 dead transitions. [2022-01-19 13:19:18,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 990 transitions, 19403 flow [2022-01-19 13:19:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-19 13:19:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-01-19 13:19:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4691 transitions. [2022-01-19 13:19:18,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6500831485587583 [2022-01-19 13:19:18,674 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4691 transitions. [2022-01-19 13:19:18,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4691 transitions. [2022-01-19 13:19:18,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:18,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4691 transitions. [2022-01-19 13:19:18,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 114.41463414634147) internal successors, (4691), 41 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:18,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:18,681 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:18,681 INFO L186 Difference]: Start difference. First operand has 840 places, 662 transitions, 9474 flow. Second operand 41 states and 4691 transitions. [2022-01-19 13:19:18,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 990 transitions, 19403 flow [2022-01-19 13:19:26,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 990 transitions, 18493 flow, removed 417 selfloop flow, removed 19 redundant places. [2022-01-19 13:19:26,537 INFO L242 Difference]: Finished difference. Result has 876 places, 681 transitions, 9982 flow [2022-01-19 13:19:26,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8795, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9982, PETRI_PLACES=876, PETRI_TRANSITIONS=681} [2022-01-19 13:19:26,537 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 717 predicate places. [2022-01-19 13:19:26,538 INFO L470 AbstractCegarLoop]: Abstraction has has 876 places, 681 transitions, 9982 flow [2022-01-19 13:19:26,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:26,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:26,538 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] [2022-01-19 13:19:26,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 13:19:26,538 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:19:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1168624123, now seen corresponding path program 24 times [2022-01-19 13:19:26,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017419387] [2022-01-19 13:19:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:26,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:27,026 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 13:19:27,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017419387] [2022-01-19 13:19:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017419387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:27,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:27,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:19:27,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799358726] [2022-01-19 13:19:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:27,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:19:27,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:19:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:19:27,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:19:27,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 681 transitions, 9982 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:27,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:27,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:19:27,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:38,629 INFO L129 PetriNetUnfolder]: 4270/13765 cut-off events. [2022-01-19 13:19:38,629 INFO L130 PetriNetUnfolder]: For 1131758/1131788 co-relation queries the response was YES. [2022-01-19 13:19:39,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132973 conditions, 13765 events. 4270/13765 cut-off events. For 1131758/1131788 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 149220 event pairs, 2407 based on Foata normal form. 9/13410 useless extension candidates. Maximal degree in co-relation 132580. Up to 4628 conditions per place. [2022-01-19 13:19:39,187 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 840 selfloop transitions, 42 changer transitions 72/1041 dead transitions. [2022-01-19 13:19:39,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 1041 transitions, 21852 flow [2022-01-19 13:19:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:19:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:19:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6053 transitions. [2022-01-19 13:19:39,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6489065180102916 [2022-01-19 13:19:39,190 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6053 transitions. [2022-01-19 13:19:39,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6053 transitions. [2022-01-19 13:19:39,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:39,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6053 transitions. [2022-01-19 13:19:39,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.20754716981132) internal successors, (6053), 53 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:39,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:39,199 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:39,199 INFO L186 Difference]: Start difference. First operand has 876 places, 681 transitions, 9982 flow. Second operand 53 states and 6053 transitions. [2022-01-19 13:19:39,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 1041 transitions, 21852 flow [2022-01-19 13:19:48,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1041 transitions, 20591 flow, removed 576 selfloop flow, removed 28 redundant places. [2022-01-19 13:19:48,523 INFO L242 Difference]: Finished difference. Result has 927 places, 694 transitions, 10087 flow [2022-01-19 13:19:48,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=9257, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=10087, PETRI_PLACES=927, PETRI_TRANSITIONS=694} [2022-01-19 13:19:48,524 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 768 predicate places. [2022-01-19 13:19:48,524 INFO L470 AbstractCegarLoop]: Abstraction has has 927 places, 694 transitions, 10087 flow [2022-01-19 13:19:48,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:48,525 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:48,525 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] [2022-01-19 13:19:48,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 13:19:48,525 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:19:48,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash 806348933, now seen corresponding path program 25 times [2022-01-19 13:19:48,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:48,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019775339] [2022-01-19 13:19:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:48,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:49,029 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 13:19:49,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:49,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019775339] [2022-01-19 13:19:49,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019775339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:49,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:49,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:19:49,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278362500] [2022-01-19 13:19:49,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:49,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:19:49,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:19:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:19:49,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:19:49,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 694 transitions, 10087 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:49,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:49,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:19:49,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:02,168 INFO L129 PetriNetUnfolder]: 4594/14898 cut-off events. [2022-01-19 13:20:02,168 INFO L130 PetriNetUnfolder]: For 1525977/1526022 co-relation queries the response was YES. [2022-01-19 13:20:02,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154824 conditions, 14898 events. 4594/14898 cut-off events. For 1525977/1526022 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 164491 event pairs, 2642 based on Foata normal form. 10/14444 useless extension candidates. Maximal degree in co-relation 154402. Up to 4374 conditions per place. [2022-01-19 13:20:02,825 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 846 selfloop transitions, 48 changer transitions 76/1057 dead transitions. [2022-01-19 13:20:02,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 1057 transitions, 23125 flow [2022-01-19 13:20:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:20:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:20:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6052 transitions. [2022-01-19 13:20:02,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6487993138936535 [2022-01-19 13:20:02,828 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6052 transitions. [2022-01-19 13:20:02,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6052 transitions. [2022-01-19 13:20:02,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:02,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6052 transitions. [2022-01-19 13:20:02,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.18867924528301) internal successors, (6052), 53 states have internal predecessors, (6052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:02,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:02,837 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:02,837 INFO L186 Difference]: Start difference. First operand has 927 places, 694 transitions, 10087 flow. Second operand 53 states and 6052 transitions. [2022-01-19 13:20:02,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 1057 transitions, 23125 flow [2022-01-19 13:20:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 1057 transitions, 21447 flow, removed 815 selfloop flow, removed 39 redundant places. [2022-01-19 13:20:13,795 INFO L242 Difference]: Finished difference. Result has 953 places, 707 transitions, 10482 flow [2022-01-19 13:20:13,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=9637, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=10482, PETRI_PLACES=953, PETRI_TRANSITIONS=707} [2022-01-19 13:20:13,795 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 794 predicate places. [2022-01-19 13:20:13,796 INFO L470 AbstractCegarLoop]: Abstraction has has 953 places, 707 transitions, 10482 flow [2022-01-19 13:20:13,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:13,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:13,796 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] [2022-01-19 13:20:13,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 13:20:13,797 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:20:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1658438515, now seen corresponding path program 26 times [2022-01-19 13:20:13,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503756732] [2022-01-19 13:20:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:13,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:14,217 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 13:20:14,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503756732] [2022-01-19 13:20:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503756732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:14,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:20:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436221431] [2022-01-19 13:20:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:14,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:20:14,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:20:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:20:14,220 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:20:14,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 707 transitions, 10482 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:14,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:14,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:20:14,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:27,050 INFO L129 PetriNetUnfolder]: 4817/16066 cut-off events. [2022-01-19 13:20:27,050 INFO L130 PetriNetUnfolder]: For 1650889/1650930 co-relation queries the response was YES. [2022-01-19 13:20:27,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166300 conditions, 16066 events. 4817/16066 cut-off events. For 1650889/1650930 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 181540 event pairs, 1963 based on Foata normal form. 18/15707 useless extension candidates. Maximal degree in co-relation 165865. Up to 6908 conditions per place. [2022-01-19 13:20:27,624 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 889 selfloop transitions, 87 changer transitions 64/1127 dead transitions. [2022-01-19 13:20:27,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 1127 transitions, 23863 flow [2022-01-19 13:20:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-19 13:20:27,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-01-19 13:20:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 5477 transitions. [2022-01-19 13:20:27,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6483191287878788 [2022-01-19 13:20:27,628 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 5477 transitions. [2022-01-19 13:20:27,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 5477 transitions. [2022-01-19 13:20:27,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:27,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 5477 transitions. [2022-01-19 13:20:27,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 114.10416666666667) internal successors, (5477), 48 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:27,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 176.0) internal successors, (8624), 49 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:27,635 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 176.0) internal successors, (8624), 49 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:27,635 INFO L186 Difference]: Start difference. First operand has 953 places, 707 transitions, 10482 flow. Second operand 48 states and 5477 transitions. [2022-01-19 13:20:27,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 1127 transitions, 23863 flow [2022-01-19 13:20:39,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1127 transitions, 22983 flow, removed 418 selfloop flow, removed 38 redundant places. [2022-01-19 13:20:39,038 INFO L242 Difference]: Finished difference. Result has 967 places, 732 transitions, 11520 flow [2022-01-19 13:20:39,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=10015, PETRI_DIFFERENCE_MINUEND_PLACES=879, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=11520, PETRI_PLACES=967, PETRI_TRANSITIONS=732} [2022-01-19 13:20:39,041 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 808 predicate places. [2022-01-19 13:20:39,041 INFO L470 AbstractCegarLoop]: Abstraction has has 967 places, 732 transitions, 11520 flow [2022-01-19 13:20:39,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:39,042 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] [2022-01-19 13:20:39,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 13:20:39,042 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:20:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash 744283709, now seen corresponding path program 27 times [2022-01-19 13:20:39,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:39,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285810379] [2022-01-19 13:20:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:39,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:39,511 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 13:20:39,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:39,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285810379] [2022-01-19 13:20:39,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285810379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:39,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:39,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:20:39,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687896154] [2022-01-19 13:20:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:39,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:20:39,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:20:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:20:39,513 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:20:39,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 732 transitions, 11520 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:39,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:20:39,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:53,866 INFO L129 PetriNetUnfolder]: 5139/16460 cut-off events. [2022-01-19 13:20:53,867 INFO L130 PetriNetUnfolder]: For 1678712/1678755 co-relation queries the response was YES. [2022-01-19 13:20:54,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176040 conditions, 16460 events. 5139/16460 cut-off events. For 1678712/1678755 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 184060 event pairs, 3548 based on Foata normal form. 7/16005 useless extension candidates. Maximal degree in co-relation 175599. Up to 4788 conditions per place. [2022-01-19 13:20:54,597 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 911 selfloop transitions, 33 changer transitions 72/1103 dead transitions. [2022-01-19 13:20:54,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 1103 transitions, 24566 flow [2022-01-19 13:20:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:20:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:20:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6102 transitions. [2022-01-19 13:20:54,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6541595197255574 [2022-01-19 13:20:54,600 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6102 transitions. [2022-01-19 13:20:54,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6102 transitions. [2022-01-19 13:20:54,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:54,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6102 transitions. [2022-01-19 13:20:54,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 115.13207547169812) internal successors, (6102), 53 states have internal predecessors, (6102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:54,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:54,608 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:54,609 INFO L186 Difference]: Start difference. First operand has 967 places, 732 transitions, 11520 flow. Second operand 53 states and 6102 transitions. [2022-01-19 13:20:54,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 1103 transitions, 24566 flow [2022-01-19 13:21:07,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 1103 transitions, 23386 flow, removed 542 selfloop flow, removed 34 redundant places. [2022-01-19 13:21:07,750 INFO L242 Difference]: Finished difference. Result has 1005 places, 746 transitions, 11731 flow [2022-01-19 13:21:07,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=10902, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=11731, PETRI_PLACES=1005, PETRI_TRANSITIONS=746} [2022-01-19 13:21:07,751 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 846 predicate places. [2022-01-19 13:21:07,751 INFO L470 AbstractCegarLoop]: Abstraction has has 1005 places, 746 transitions, 11731 flow [2022-01-19 13:21:07,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:07,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:07,752 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] [2022-01-19 13:21:07,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 13:21:07,752 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:21:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2114988691, now seen corresponding path program 28 times [2022-01-19 13:21:07,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:07,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992737500] [2022-01-19 13:21:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:07,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:08,199 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 13:21:08,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:08,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992737500] [2022-01-19 13:21:08,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992737500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:08,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:08,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:21:08,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601730966] [2022-01-19 13:21:08,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:08,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:21:08,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:21:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:21:08,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:21:08,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 746 transitions, 11731 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:08,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:21:08,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:24,397 INFO L129 PetriNetUnfolder]: 5150/17122 cut-off events. [2022-01-19 13:21:24,397 INFO L130 PetriNetUnfolder]: For 1908633/1908686 co-relation queries the response was YES. [2022-01-19 13:21:25,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184007 conditions, 17122 events. 5150/17122 cut-off events. For 1908633/1908686 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 195332 event pairs, 2373 based on Foata normal form. 20/16780 useless extension candidates. Maximal degree in co-relation 183545. Up to 7619 conditions per place. [2022-01-19 13:21:25,548 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 920 selfloop transitions, 89 changer transitions 109/1205 dead transitions. [2022-01-19 13:21:25,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1027 places, 1205 transitions, 25043 flow [2022-01-19 13:21:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-19 13:21:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-01-19 13:21:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 6681 transitions. [2022-01-19 13:21:25,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6433936825885979 [2022-01-19 13:21:25,552 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 6681 transitions. [2022-01-19 13:21:25,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 6681 transitions. [2022-01-19 13:21:25,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:25,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 6681 transitions. [2022-01-19 13:21:25,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 113.23728813559322) internal successors, (6681), 59 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:25,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 176.0) internal successors, (10560), 60 states have internal predecessors, (10560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:25,562 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 176.0) internal successors, (10560), 60 states have internal predecessors, (10560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:25,562 INFO L186 Difference]: Start difference. First operand has 1005 places, 746 transitions, 11731 flow. Second operand 59 states and 6681 transitions. [2022-01-19 13:21:25,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1027 places, 1205 transitions, 25043 flow [2022-01-19 13:21:41,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 1205 transitions, 24038 flow, removed 491 selfloop flow, removed 38 redundant places. [2022-01-19 13:21:41,786 INFO L242 Difference]: Finished difference. Result has 1035 places, 747 transitions, 11665 flow [2022-01-19 13:21:41,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11264, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=11665, PETRI_PLACES=1035, PETRI_TRANSITIONS=747} [2022-01-19 13:21:41,787 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 876 predicate places. [2022-01-19 13:21:41,787 INFO L470 AbstractCegarLoop]: Abstraction has has 1035 places, 747 transitions, 11665 flow [2022-01-19 13:21:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:41,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:41,787 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] [2022-01-19 13:21:41,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 13:21:41,788 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:21:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1629291401, now seen corresponding path program 29 times [2022-01-19 13:21:41,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:41,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833987105] [2022-01-19 13:21:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:41,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:42,239 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 13:21:42,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833987105] [2022-01-19 13:21:42,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833987105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:42,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:42,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:21:42,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798434940] [2022-01-19 13:21:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:42,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:21:42,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:21:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:21:42,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:21:42,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 747 transitions, 11665 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:42,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:42,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:21:42,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:56,328 INFO L129 PetriNetUnfolder]: 5233/17523 cut-off events. [2022-01-19 13:21:56,329 INFO L130 PetriNetUnfolder]: For 1713378/1713426 co-relation queries the response was YES. [2022-01-19 13:21:56,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181070 conditions, 17523 events. 5233/17523 cut-off events. For 1713378/1713426 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 201076 event pairs, 2408 based on Foata normal form. 20/17154 useless extension candidates. Maximal degree in co-relation 180598. Up to 7619 conditions per place. [2022-01-19 13:21:57,063 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 901 selfloop transitions, 83 changer transitions 46/1117 dead transitions. [2022-01-19 13:21:57,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1025 places, 1117 transitions, 22940 flow [2022-01-19 13:21:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:21:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:21:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4061 transitions. [2022-01-19 13:21:57,066 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6592532467532467 [2022-01-19 13:21:57,066 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4061 transitions. [2022-01-19 13:21:57,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4061 transitions. [2022-01-19 13:21:57,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:57,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4061 transitions. [2022-01-19 13:21:57,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.02857142857142) internal successors, (4061), 35 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:57,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:57,076 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:57,076 INFO L186 Difference]: Start difference. First operand has 1035 places, 747 transitions, 11665 flow. Second operand 35 states and 4061 transitions. [2022-01-19 13:21:57,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1025 places, 1117 transitions, 22940 flow [2022-01-19 13:22:11,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 1117 transitions, 21814 flow, removed 427 selfloop flow, removed 51 redundant places. [2022-01-19 13:22:11,502 INFO L242 Difference]: Finished difference. Result has 1001 places, 772 transitions, 12683 flow [2022-01-19 13:22:11,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11339, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12683, PETRI_PLACES=1001, PETRI_TRANSITIONS=772} [2022-01-19 13:22:11,503 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 842 predicate places. [2022-01-19 13:22:11,503 INFO L470 AbstractCegarLoop]: Abstraction has has 1001 places, 772 transitions, 12683 flow [2022-01-19 13:22:11,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:11,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:11,504 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] [2022-01-19 13:22:11,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 13:22:11,504 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:22:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 117147207, now seen corresponding path program 30 times [2022-01-19 13:22:11,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:11,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144362224] [2022-01-19 13:22:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:11,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:11,915 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 13:22:11,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:11,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144362224] [2022-01-19 13:22:11,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144362224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:11,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:11,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:22:11,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479094262] [2022-01-19 13:22:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:11,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:22:11,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:22:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:22:11,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:22:11,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 772 transitions, 12683 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:11,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:11,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:22:11,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:27,143 INFO L129 PetriNetUnfolder]: 5351/17693 cut-off events. [2022-01-19 13:22:27,143 INFO L130 PetriNetUnfolder]: For 1752627/1752674 co-relation queries the response was YES. [2022-01-19 13:22:27,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184854 conditions, 17693 events. 5351/17693 cut-off events. For 1752627/1752674 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 202741 event pairs, 2590 based on Foata normal form. 20/17334 useless extension candidates. Maximal degree in co-relation 184397. Up to 7619 conditions per place. [2022-01-19 13:22:27,787 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 925 selfloop transitions, 80 changer transitions 93/1185 dead transitions. [2022-01-19 13:22:27,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 1185 transitions, 26165 flow [2022-01-19 13:22:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 13:22:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 13:22:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6375 transitions. [2022-01-19 13:22:27,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6468141233766234 [2022-01-19 13:22:27,790 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6375 transitions. [2022-01-19 13:22:27,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6375 transitions. [2022-01-19 13:22:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6375 transitions. [2022-01-19 13:22:27,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 113.83928571428571) internal successors, (6375), 56 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:27,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:27,800 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:27,800 INFO L186 Difference]: Start difference. First operand has 1001 places, 772 transitions, 12683 flow. Second operand 56 states and 6375 transitions. [2022-01-19 13:22:27,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 1185 transitions, 26165 flow [2022-01-19 13:22:44,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1020 places, 1185 transitions, 25035 flow, removed 504 selfloop flow, removed 21 redundant places. [2022-01-19 13:22:44,339 INFO L242 Difference]: Finished difference. Result has 1067 places, 782 transitions, 12734 flow [2022-01-19 13:22:44,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11951, PETRI_DIFFERENCE_MINUEND_PLACES=965, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12734, PETRI_PLACES=1067, PETRI_TRANSITIONS=782} [2022-01-19 13:22:44,340 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 908 predicate places. [2022-01-19 13:22:44,340 INFO L470 AbstractCegarLoop]: Abstraction has has 1067 places, 782 transitions, 12734 flow [2022-01-19 13:22:44,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:44,341 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:44,341 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] [2022-01-19 13:22:44,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 13:22:44,341 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:22:44,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash 95620121, now seen corresponding path program 31 times [2022-01-19 13:22:44,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:44,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182543730] [2022-01-19 13:22:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:44,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:44,846 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 13:22:44,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182543730] [2022-01-19 13:22:44,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182543730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:44,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:44,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:22:44,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129174207] [2022-01-19 13:22:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:44,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:22:44,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:22:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:22:44,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:22:44,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 782 transitions, 12734 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:44,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:44,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:22:44,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:00,384 INFO L129 PetriNetUnfolder]: 5342/17780 cut-off events. [2022-01-19 13:23:00,384 INFO L130 PetriNetUnfolder]: For 1921559/1921604 co-relation queries the response was YES. [2022-01-19 13:23:01,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190555 conditions, 17780 events. 5342/17780 cut-off events. For 1921559/1921604 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 203883 event pairs, 2559 based on Foata normal form. 13/17387 useless extension candidates. Maximal degree in co-relation 190066. Up to 7619 conditions per place. [2022-01-19 13:23:01,345 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 989 selfloop transitions, 88 changer transitions 100/1264 dead transitions. [2022-01-19 13:23:01,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1264 transitions, 28294 flow [2022-01-19 13:23:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 13:23:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 13:23:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6348 transitions. [2022-01-19 13:23:01,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6440746753246753 [2022-01-19 13:23:01,349 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6348 transitions. [2022-01-19 13:23:01,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6348 transitions. [2022-01-19 13:23:01,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:01,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6348 transitions. [2022-01-19 13:23:01,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 113.35714285714286) internal successors, (6348), 56 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:01,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:01,361 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:01,361 INFO L186 Difference]: Start difference. First operand has 1067 places, 782 transitions, 12734 flow. Second operand 56 states and 6348 transitions. [2022-01-19 13:23:01,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1264 transitions, 28294 flow [2022-01-19 13:23:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 1264 transitions, 27196 flow, removed 481 selfloop flow, removed 47 redundant places. [2022-01-19 13:23:20,395 INFO L242 Difference]: Finished difference. Result has 1083 places, 790 transitions, 13187 flow [2022-01-19 13:23:20,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=12468, PETRI_DIFFERENCE_MINUEND_PLACES=980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=13187, PETRI_PLACES=1083, PETRI_TRANSITIONS=790} [2022-01-19 13:23:20,396 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 924 predicate places. [2022-01-19 13:23:20,396 INFO L470 AbstractCegarLoop]: Abstraction has has 1083 places, 790 transitions, 13187 flow [2022-01-19 13:23:20,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:20,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:20,397 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] [2022-01-19 13:23:20,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 13:23:20,397 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:23:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash 557987441, now seen corresponding path program 32 times [2022-01-19 13:23:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:20,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177264891] [2022-01-19 13:23:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:20,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:20,819 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 13:23:20,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:20,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177264891] [2022-01-19 13:23:20,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177264891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:20,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:20,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:23:20,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438059277] [2022-01-19 13:23:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:20,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:23:20,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:23:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:23:20,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:23:20,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 790 transitions, 13187 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:20,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:20,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:23:20,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:37,058 INFO L129 PetriNetUnfolder]: 5343/17748 cut-off events. [2022-01-19 13:23:37,064 INFO L130 PetriNetUnfolder]: For 1798535/1798600 co-relation queries the response was YES. [2022-01-19 13:23:38,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186239 conditions, 17748 events. 5343/17748 cut-off events. For 1798535/1798600 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 203418 event pairs, 2679 based on Foata normal form. 20/17385 useless extension candidates. Maximal degree in co-relation 185742. Up to 7619 conditions per place. [2022-01-19 13:23:38,947 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 951 selfloop transitions, 65 changer transitions 96/1199 dead transitions. [2022-01-19 13:23:38,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1098 places, 1199 transitions, 26299 flow [2022-01-19 13:23:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 13:23:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 13:23:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6391 transitions. [2022-01-19 13:23:38,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2022-01-19 13:23:38,952 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6391 transitions. [2022-01-19 13:23:38,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6391 transitions. [2022-01-19 13:23:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:38,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6391 transitions. [2022-01-19 13:23:38,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 114.125) internal successors, (6391), 56 states have internal predecessors, (6391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:38,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:38,966 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 176.0) internal successors, (10032), 57 states have internal predecessors, (10032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:38,966 INFO L186 Difference]: Start difference. First operand has 1083 places, 790 transitions, 13187 flow. Second operand 56 states and 6391 transitions. [2022-01-19 13:23:38,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1098 places, 1199 transitions, 26299 flow [2022-01-19 13:23:56,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 1199 transitions, 25388 flow, removed 387 selfloop flow, removed 48 redundant places. [2022-01-19 13:23:57,010 INFO L242 Difference]: Finished difference. Result has 1097 places, 796 transitions, 13382 flow [2022-01-19 13:23:57,011 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=12898, PETRI_DIFFERENCE_MINUEND_PLACES=995, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=13382, PETRI_PLACES=1097, PETRI_TRANSITIONS=796} [2022-01-19 13:23:57,011 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 938 predicate places. [2022-01-19 13:23:57,011 INFO L470 AbstractCegarLoop]: Abstraction has has 1097 places, 796 transitions, 13382 flow [2022-01-19 13:23:57,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:57,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:57,012 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] [2022-01-19 13:23:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 13:23:57,012 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:23:57,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2040517893, now seen corresponding path program 33 times [2022-01-19 13:23:57,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:57,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792143901] [2022-01-19 13:23:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:57,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:57,483 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 13:23:57,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:57,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792143901] [2022-01-19 13:23:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792143901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:57,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:57,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:23:57,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661334280] [2022-01-19 13:23:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:57,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:23:57,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:23:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:23:57,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:23:57,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1097 places, 796 transitions, 13382 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:57,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:57,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:23:57,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:13,698 INFO L129 PetriNetUnfolder]: 5398/18230 cut-off events. [2022-01-19 13:24:13,698 INFO L130 PetriNetUnfolder]: For 1922895/1922948 co-relation queries the response was YES. [2022-01-19 13:24:14,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193058 conditions, 18230 events. 5398/18230 cut-off events. For 1922895/1922948 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 211242 event pairs, 2334 based on Foata normal form. 20/17863 useless extension candidates. Maximal degree in co-relation 192555. Up to 7619 conditions per place. [2022-01-19 13:24:14,511 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 957 selfloop transitions, 80 changer transitions 78/1202 dead transitions. [2022-01-19 13:24:14,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1109 places, 1202 transitions, 25177 flow [2022-01-19 13:24:14,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:24:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:24:14,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6049 transitions. [2022-01-19 13:24:14,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6484777015437393 [2022-01-19 13:24:14,514 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6049 transitions. [2022-01-19 13:24:14,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6049 transitions. [2022-01-19 13:24:14,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:14,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6049 transitions. [2022-01-19 13:24:14,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 114.13207547169812) internal successors, (6049), 53 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:14,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:14,523 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:14,523 INFO L186 Difference]: Start difference. First operand has 1097 places, 796 transitions, 13382 flow. Second operand 53 states and 6049 transitions. [2022-01-19 13:24:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1109 places, 1202 transitions, 25177 flow [2022-01-19 13:24:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1063 places, 1202 transitions, 24526 flow, removed 251 selfloop flow, removed 46 redundant places. [2022-01-19 13:24:33,478 INFO L242 Difference]: Finished difference. Result has 1107 places, 804 transitions, 13767 flow [2022-01-19 13:24:33,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13092, PETRI_DIFFERENCE_MINUEND_PLACES=1011, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=13767, PETRI_PLACES=1107, PETRI_TRANSITIONS=804} [2022-01-19 13:24:33,479 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 948 predicate places. [2022-01-19 13:24:33,479 INFO L470 AbstractCegarLoop]: Abstraction has has 1107 places, 804 transitions, 13767 flow [2022-01-19 13:24:33,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:33,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:33,480 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] [2022-01-19 13:24:33,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 13:24:33,480 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:24:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -480236793, now seen corresponding path program 34 times [2022-01-19 13:24:33,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426679097] [2022-01-19 13:24:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:33,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:33,891 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 13:24:33,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:33,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426679097] [2022-01-19 13:24:33,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426679097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:33,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:33,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:24:33,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769754062] [2022-01-19 13:24:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:33,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:24:33,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:24:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:24:33,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:24:33,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1107 places, 804 transitions, 13767 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:33,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:33,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:24:33,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:48,654 INFO L129 PetriNetUnfolder]: 5403/18003 cut-off events. [2022-01-19 13:24:48,655 INFO L130 PetriNetUnfolder]: For 1832955/1832999 co-relation queries the response was YES. [2022-01-19 13:24:49,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189754 conditions, 18003 events. 5403/18003 cut-off events. For 1832955/1832999 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 206950 event pairs, 2612 based on Foata normal form. 13/17604 useless extension candidates. Maximal degree in co-relation 189247. Up to 7619 conditions per place. [2022-01-19 13:24:49,483 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 935 selfloop transitions, 111 changer transitions 46/1179 dead transitions. [2022-01-19 13:24:49,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1108 places, 1179 transitions, 25862 flow [2022-01-19 13:24:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 13:24:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 13:24:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4364 transitions. [2022-01-19 13:24:49,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.652511961722488 [2022-01-19 13:24:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4364 transitions. [2022-01-19 13:24:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4364 transitions. [2022-01-19 13:24:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:49,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4364 transitions. [2022-01-19 13:24:49,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 114.84210526315789) internal successors, (4364), 38 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:49,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 176.0) internal successors, (6864), 39 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:49,492 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 176.0) internal successors, (6864), 39 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:49,492 INFO L186 Difference]: Start difference. First operand has 1107 places, 804 transitions, 13767 flow. Second operand 38 states and 4364 transitions. [2022-01-19 13:24:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1108 places, 1179 transitions, 25862 flow [2022-01-19 13:25:07,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 1179 transitions, 24956 flow, removed 387 selfloop flow, removed 44 redundant places. [2022-01-19 13:25:07,744 INFO L242 Difference]: Finished difference. Result has 1084 places, 826 transitions, 14850 flow [2022-01-19 13:25:07,744 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13510, PETRI_DIFFERENCE_MINUEND_PLACES=1027, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14850, PETRI_PLACES=1084, PETRI_TRANSITIONS=826} [2022-01-19 13:25:07,745 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 925 predicate places. [2022-01-19 13:25:07,745 INFO L470 AbstractCegarLoop]: Abstraction has has 1084 places, 826 transitions, 14850 flow [2022-01-19 13:25:07,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:07,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:07,745 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] [2022-01-19 13:25:07,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 13:25:07,745 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:25:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1383232231, now seen corresponding path program 35 times [2022-01-19 13:25:07,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:07,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386760255] [2022-01-19 13:25:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:07,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:08,213 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 13:25:08,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:08,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386760255] [2022-01-19 13:25:08,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386760255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:08,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:08,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:25:08,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115765802] [2022-01-19 13:25:08,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:08,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:25:08,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:08,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:25:08,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:25:08,216 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:25:08,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1084 places, 826 transitions, 14850 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:08,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:08,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:25:08,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:24,051 INFO L129 PetriNetUnfolder]: 5466/18437 cut-off events. [2022-01-19 13:25:24,052 INFO L130 PetriNetUnfolder]: For 1833729/1833777 co-relation queries the response was YES. [2022-01-19 13:25:24,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192027 conditions, 18437 events. 5466/18437 cut-off events. For 1833729/1833777 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 214001 event pairs, 2311 based on Foata normal form. 20/18070 useless extension candidates. Maximal degree in co-relation 191536. Up to 7619 conditions per place. [2022-01-19 13:25:24,825 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 978 selfloop transitions, 90 changer transitions 78/1233 dead transitions. [2022-01-19 13:25:24,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1118 places, 1233 transitions, 27444 flow [2022-01-19 13:25:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:25:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:25:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6035 transitions. [2022-01-19 13:25:24,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6469768439108061 [2022-01-19 13:25:24,828 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6035 transitions. [2022-01-19 13:25:24,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6035 transitions. [2022-01-19 13:25:24,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:24,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6035 transitions. [2022-01-19 13:25:24,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 113.86792452830188) internal successors, (6035), 53 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:24,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:24,837 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:24,837 INFO L186 Difference]: Start difference. First operand has 1084 places, 826 transitions, 14850 flow. Second operand 53 states and 6035 transitions. [2022-01-19 13:25:24,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1118 places, 1233 transitions, 27444 flow [2022-01-19 13:25:43,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1096 places, 1233 transitions, 26551 flow, removed 378 selfloop flow, removed 22 redundant places. [2022-01-19 13:25:43,425 INFO L242 Difference]: Finished difference. Result has 1139 places, 834 transitions, 14877 flow [2022-01-19 13:25:43,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14171, PETRI_DIFFERENCE_MINUEND_PLACES=1044, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=14877, PETRI_PLACES=1139, PETRI_TRANSITIONS=834} [2022-01-19 13:25:43,426 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 980 predicate places. [2022-01-19 13:25:43,426 INFO L470 AbstractCegarLoop]: Abstraction has has 1139 places, 834 transitions, 14877 flow [2022-01-19 13:25:43,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:43,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:43,426 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] [2022-01-19 13:25:43,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 13:25:43,426 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:25:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash -593051873, now seen corresponding path program 36 times [2022-01-19 13:25:43,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:43,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166639933] [2022-01-19 13:25:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:43,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:43,887 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 13:25:43,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:43,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166639933] [2022-01-19 13:25:43,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166639933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:43,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:43,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:25:43,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861203869] [2022-01-19 13:25:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:43,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:25:43,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:25:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:25:43,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:25:43,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1139 places, 834 transitions, 14877 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:43,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:43,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:25:43,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:26:00,019 INFO L129 PetriNetUnfolder]: 5488/18548 cut-off events. [2022-01-19 13:26:00,019 INFO L130 PetriNetUnfolder]: For 1885970/1886024 co-relation queries the response was YES. [2022-01-19 13:26:00,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194820 conditions, 18548 events. 5488/18548 cut-off events. For 1885970/1886024 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 215673 event pairs, 2246 based on Foata normal form. 20/18180 useless extension candidates. Maximal degree in co-relation 194301. Up to 7619 conditions per place. [2022-01-19 13:26:00,883 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 981 selfloop transitions, 110 changer transitions 79/1257 dead transitions. [2022-01-19 13:26:00,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1155 places, 1257 transitions, 27974 flow [2022-01-19 13:26:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 13:26:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 13:26:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6033 transitions. [2022-01-19 13:26:00,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.64676243567753 [2022-01-19 13:26:00,886 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6033 transitions. [2022-01-19 13:26:00,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6033 transitions. [2022-01-19 13:26:00,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:26:00,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6033 transitions. [2022-01-19 13:26:00,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 113.83018867924528) internal successors, (6033), 53 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:00,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:00,894 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 176.0) internal successors, (9504), 54 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:00,894 INFO L186 Difference]: Start difference. First operand has 1139 places, 834 transitions, 14877 flow. Second operand 53 states and 6033 transitions. [2022-01-19 13:26:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1155 places, 1257 transitions, 27974 flow [2022-01-19 13:26:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1112 places, 1257 transitions, 27093 flow, removed 364 selfloop flow, removed 43 redundant places. [2022-01-19 13:26:21,275 INFO L242 Difference]: Finished difference. Result has 1150 places, 838 transitions, 15137 flow [2022-01-19 13:26:21,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=14606, PETRI_DIFFERENCE_MINUEND_PLACES=1060, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=15137, PETRI_PLACES=1150, PETRI_TRANSITIONS=838} [2022-01-19 13:26:21,275 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 991 predicate places. [2022-01-19 13:26:21,276 INFO L470 AbstractCegarLoop]: Abstraction has has 1150 places, 838 transitions, 15137 flow [2022-01-19 13:26:21,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:21,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:26:21,276 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] [2022-01-19 13:26:21,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 13:26:21,276 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 13:26:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:26:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash 500731013, now seen corresponding path program 37 times [2022-01-19 13:26:21,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:26:21,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012591495] [2022-01-19 13:26:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:26:21,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:26:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:21,685 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 13:26:21,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:26:21,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012591495] [2022-01-19 13:26:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012591495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:26:21,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:26:21,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-01-19 13:26:21,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136686816] [2022-01-19 13:26:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:26:21,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-19 13:26:21,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:26:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-19 13:26:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:26:21,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2022-01-19 13:26:21,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1150 places, 838 transitions, 15137 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:21,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:26:21,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2022-01-19 13:26:21,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand