/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 09:28:53,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:28:53,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:28:53,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:28:53,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:28:53,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:28:53,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:28:53,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:28:53,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:28:53,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:28:53,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:28:53,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:28:53,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:28:53,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:28:53,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:28:53,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:28:53,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:28:53,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:28:53,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:28:53,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:28:53,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:28:53,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:28:53,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:28:53,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:28:53,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:28:53,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:28:53,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:28:53,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:28:53,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:28:53,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:28:53,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:28:53,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:28:53,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:28:53,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:28:53,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:28:53,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:28:53,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:28:53,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:28:53,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:28:53,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:28:53,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:28:53,762 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 09:28:53,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:28:53,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:28:53,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:28:53,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:28:53,787 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:28:53,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:28:53,788 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:28:53,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:28:53,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:28:53,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:28:53,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:28:53,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:28:53,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:28:53,790 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 09:28:53,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:28:53,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:28:53,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 09:28:53,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 09:28:54,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:28:54,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:28:54,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:28:54,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:28:54,087 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:28:54,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2022-12-13 09:28:55,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:28:55,292 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:28:55,292 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2022-12-13 09:28:55,329 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9351759/51211359738144868952c4103a519e28/FLAG370d76edc [2022-12-13 09:28:55,342 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9351759/51211359738144868952c4103a519e28 [2022-12-13 09:28:55,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:28:55,345 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 09:28:55,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:28:55,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:28:55,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:28:55,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b083aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55, skipping insertion in model container [2022-12-13 09:28:55,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:28:55,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:28:55,564 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 09:28:55,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:28:55,749 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:28:55,757 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 09:28:55,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:28:55,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:28:55,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:28:55,836 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:28:55,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55 WrapperNode [2022-12-13 09:28:55,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:28:55,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:28:55,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:28:55,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:28:55,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,873 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-12-13 09:28:55,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:28:55,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:28:55,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:28:55,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:28:55,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,893 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:28:55,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:28:55,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:28:55,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:28:55,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (1/1) ... [2022-12-13 09:28:55,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:28:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 09:28:55,927 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) [2022-12-13 09:28:55,943 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 [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:28:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 09:28:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 09:28:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 09:28:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 09:28:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 09:28:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:28:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:28:55,964 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 09:28:56,064 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 09:28:56,066 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:28:56,314 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 09:28:56,414 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:28:56,414 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 09:28:56,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:56 BoogieIcfgContainer [2022-12-13 09:28:56,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:28:56,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:28:56,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:28:56,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:28:56,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:28:55" (1/3) ... [2022-12-13 09:28:56,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d21bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:56, skipping insertion in model container [2022-12-13 09:28:56,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:28:55" (2/3) ... [2022-12-13 09:28:56,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d21bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:28:56, skipping insertion in model container [2022-12-13 09:28:56,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:28:56" (3/3) ... [2022-12-13 09:28:56,421 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-12-13 09:28:56,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:28:56,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 09:28:56,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:28:56,491 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 09:28:56,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 09:28:56,580 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 09:28:56,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:28:56,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 09:28:56,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 09:28:56,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 123 transitions, 258 flow [2022-12-13 09:28:56,589 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:56,599 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 09:28:56,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 258 flow [2022-12-13 09:28:56,628 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 09:28:56,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:28:56,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 09:28:56,632 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 09:28:56,633 INFO L226 LiptonReduction]: Number of co-enabled transitions 2882 [2022-12-13 09:29:02,112 INFO L241 LiptonReduction]: Total number of compositions: 96 [2022-12-13 09:29:02,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 09:29:02,130 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41833515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:29:02,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 09:29:02,142 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-13 09:29:02,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:29:02,142 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:02,143 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:02,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 434841595, now seen corresponding path program 1 times [2022-12-13 09:29:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:02,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119373503] [2022-12-13 09:29:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119373503] [2022-12-13 09:29:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119373503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:02,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:29:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929272808] [2022-12-13 09:29:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:02,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:29:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:02,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:29:02,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:29:02,529 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 72 [2022-12-13 09:29:02,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:02,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:02,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 72 [2022-12-13 09:29:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:07,227 INFO L130 PetriNetUnfolder]: 43504/62384 cut-off events. [2022-12-13 09:29:07,228 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-13 09:29:07,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120293 conditions, 62384 events. 43504/62384 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 464046 event pairs, 11360 based on Foata normal form. 0/38934 useless extension candidates. Maximal degree in co-relation 120281. Up to 48285 conditions per place. [2022-12-13 09:29:07,579 INFO L137 encePairwiseOnDemand]: 66/72 looper letters, 40 selfloop transitions, 2 changer transitions 55/111 dead transitions. [2022-12-13 09:29:07,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 429 flow [2022-12-13 09:29:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:29:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2022-12-13 09:29:07,596 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2022-12-13 09:29:07,597 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 156 flow. Second operand 3 states and 148 transitions. [2022-12-13 09:29:07,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 429 flow [2022-12-13 09:29:07,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 09:29:07,603 INFO L231 Difference]: Finished difference. Result has 79 places, 40 transitions, 92 flow [2022-12-13 09:29:07,604 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=79, PETRI_TRANSITIONS=40} [2022-12-13 09:29:07,607 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2022-12-13 09:29:07,607 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:07,607 INFO L89 Accepts]: Start accepts. Operand has 79 places, 40 transitions, 92 flow [2022-12-13 09:29:07,611 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:07,611 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:07,611 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 40 transitions, 92 flow [2022-12-13 09:29:07,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 92 flow [2022-12-13 09:29:07,639 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 09:29:07,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:29:07,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 09:29:07,644 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 92 flow [2022-12-13 09:29:07,645 INFO L226 LiptonReduction]: Number of co-enabled transitions 958 [2022-12-13 09:29:07,758 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:07,760 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 153 [2022-12-13 09:29:07,760 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 92 flow [2022-12-13 09:29:07,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:07,760 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:07,760 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:07,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:29:07,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1719553432, now seen corresponding path program 1 times [2022-12-13 09:29:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:07,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20999359] [2022-12-13 09:29:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:07,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:08,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:08,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20999359] [2022-12-13 09:29:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20999359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:08,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:08,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:29:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751407617] [2022-12-13 09:29:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:08,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:29:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:29:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:29:08,280 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2022-12-13 09:29:08,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:08,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:08,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2022-12-13 09:29:08,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:10,378 INFO L130 PetriNetUnfolder]: 21055/30103 cut-off events. [2022-12-13 09:29:10,378 INFO L131 PetriNetUnfolder]: For 1198/1198 co-relation queries the response was YES. [2022-12-13 09:29:10,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60425 conditions, 30103 events. 21055/30103 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 192068 event pairs, 1189 based on Foata normal form. 720/25365 useless extension candidates. Maximal degree in co-relation 60415. Up to 20553 conditions per place. [2022-12-13 09:29:10,543 INFO L137 encePairwiseOnDemand]: 29/40 looper letters, 62 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2022-12-13 09:29:10,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 342 flow [2022-12-13 09:29:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 09:29:10,545 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.725 [2022-12-13 09:29:10,545 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 92 flow. Second operand 4 states and 116 transitions. [2022-12-13 09:29:10,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 342 flow [2022-12-13 09:29:10,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:10,547 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,547 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-12-13 09:29:10,548 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -29 predicate places. [2022-12-13 09:29:10,548 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:10,548 INFO L89 Accepts]: Start accepts. Operand has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,550 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:10,550 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:10,550 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,642 INFO L130 PetriNetUnfolder]: 504/1284 cut-off events. [2022-12-13 09:29:10,642 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 09:29:10,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1284 events. 504/1284 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9880 event pairs, 266 based on Foata normal form. 0/936 useless extension candidates. Maximal degree in co-relation 2384. Up to 677 conditions per place. [2022-12-13 09:29:10,655 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,655 INFO L226 LiptonReduction]: Number of co-enabled transitions 1240 [2022-12-13 09:29:10,678 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:10,679 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 131 [2022-12-13 09:29:10,679 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 165 flow [2022-12-13 09:29:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:10,680 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:10,680 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:29:10,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:10,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1766547358, now seen corresponding path program 1 times [2022-12-13 09:29:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:10,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694695299] [2022-12-13 09:29:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:11,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:11,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694695299] [2022-12-13 09:29:11,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694695299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:11,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:11,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:29:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943175848] [2022-12-13 09:29:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:29:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:29:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:29:11,055 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:11,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:11,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:11,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:11,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:12,933 INFO L130 PetriNetUnfolder]: 17698/25802 cut-off events. [2022-12-13 09:29:12,933 INFO L131 PetriNetUnfolder]: For 7041/7080 co-relation queries the response was YES. [2022-12-13 09:29:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63596 conditions, 25802 events. 17698/25802 cut-off events. For 7041/7080 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 166950 event pairs, 7790 based on Foata normal form. 67/20743 useless extension candidates. Maximal degree in co-relation 63584. Up to 22064 conditions per place. [2022-12-13 09:29:13,059 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-12-13 09:29:13,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 427 flow [2022-12-13 09:29:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2022-12-13 09:29:13,061 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6625 [2022-12-13 09:29:13,061 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 165 flow. Second operand 4 states and 106 transitions. [2022-12-13 09:29:13,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 427 flow [2022-12-13 09:29:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 09:29:13,066 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,066 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2022-12-13 09:29:13,067 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -24 predicate places. [2022-12-13 09:29:13,067 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:13,067 INFO L89 Accepts]: Start accepts. Operand has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,068 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:13,069 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:13,069 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,163 INFO L130 PetriNetUnfolder]: 643/1649 cut-off events. [2022-12-13 09:29:13,164 INFO L131 PetriNetUnfolder]: For 596/646 co-relation queries the response was YES. [2022-12-13 09:29:13,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 1649 events. 643/1649 cut-off events. For 596/646 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13416 event pairs, 340 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 3518. Up to 858 conditions per place. [2022-12-13 09:29:13,178 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,179 INFO L226 LiptonReduction]: Number of co-enabled transitions 1474 [2022-12-13 09:29:13,184 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:13,185 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 118 [2022-12-13 09:29:13,185 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 258 flow [2022-12-13 09:29:13,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:13,185 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:13,185 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:13,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 09:29:13,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1932009944, now seen corresponding path program 1 times [2022-12-13 09:29:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34642463] [2022-12-13 09:29:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:13,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34642463] [2022-12-13 09:29:13,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34642463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:13,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:13,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:29:13,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183990805] [2022-12-13 09:29:13,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:13,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:13,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:13,489 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:13,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:13,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:13,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:13,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:15,208 INFO L130 PetriNetUnfolder]: 17875/26037 cut-off events. [2022-12-13 09:29:15,208 INFO L131 PetriNetUnfolder]: For 16627/16716 co-relation queries the response was YES. [2022-12-13 09:29:15,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70847 conditions, 26037 events. 17875/26037 cut-off events. For 16627/16716 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 167570 event pairs, 5620 based on Foata normal form. 65/20933 useless extension candidates. Maximal degree in co-relation 70831. Up to 19774 conditions per place. [2022-12-13 09:29:15,505 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 69 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2022-12-13 09:29:15,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 581 flow [2022-12-13 09:29:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2022-12-13 09:29:15,508 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-13 09:29:15,508 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 258 flow. Second operand 4 states and 112 transitions. [2022-12-13 09:29:15,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 581 flow [2022-12-13 09:29:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 581 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 09:29:15,573 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,576 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-12-13 09:29:15,577 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -20 predicate places. [2022-12-13 09:29:15,578 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:15,578 INFO L89 Accepts]: Start accepts. Operand has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,578 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:15,578 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:15,578 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,797 INFO L130 PetriNetUnfolder]: 635/1633 cut-off events. [2022-12-13 09:29:15,797 INFO L131 PetriNetUnfolder]: For 1067/1131 co-relation queries the response was YES. [2022-12-13 09:29:15,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 1633 events. 635/1633 cut-off events. For 1067/1131 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13260 event pairs, 262 based on Foata normal form. 15/1211 useless extension candidates. Maximal degree in co-relation 3912. Up to 848 conditions per place. [2022-12-13 09:29:15,815 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,815 INFO L226 LiptonReduction]: Number of co-enabled transitions 1614 [2022-12-13 09:29:15,832 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:15,834 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 256 [2022-12-13 09:29:15,834 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 341 flow [2022-12-13 09:29:15,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:15,834 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:15,834 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:15,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 09:29:15,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1931954206, now seen corresponding path program 1 times [2022-12-13 09:29:15,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:15,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807669451] [2022-12-13 09:29:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:16,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807669451] [2022-12-13 09:29:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807669451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:16,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:29:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819993789] [2022-12-13 09:29:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:16,394 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:16,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:16,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:16,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:18,512 INFO L130 PetriNetUnfolder]: 18425/27071 cut-off events. [2022-12-13 09:29:18,512 INFO L131 PetriNetUnfolder]: For 31026/31218 co-relation queries the response was YES. [2022-12-13 09:29:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79139 conditions, 27071 events. 18425/27071 cut-off events. For 31026/31218 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 179167 event pairs, 5898 based on Foata normal form. 163/22027 useless extension candidates. Maximal degree in co-relation 79120. Up to 21723 conditions per place. [2022-12-13 09:29:18,715 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 81 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2022-12-13 09:29:18,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 819 flow [2022-12-13 09:29:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:29:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:29:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2022-12-13 09:29:18,716 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.69 [2022-12-13 09:29:18,716 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 341 flow. Second operand 5 states and 138 transitions. [2022-12-13 09:29:18,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 819 flow [2022-12-13 09:29:18,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 798 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 09:29:18,751 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,751 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2022-12-13 09:29:18,751 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -15 predicate places. [2022-12-13 09:29:18,751 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:18,752 INFO L89 Accepts]: Start accepts. Operand has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,752 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:18,752 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:18,752 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,867 INFO L130 PetriNetUnfolder]: 758/1816 cut-off events. [2022-12-13 09:29:18,867 INFO L131 PetriNetUnfolder]: For 2449/2561 co-relation queries the response was YES. [2022-12-13 09:29:18,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 1816 events. 758/1816 cut-off events. For 2449/2561 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14417 event pairs, 254 based on Foata normal form. 52/1404 useless extension candidates. Maximal degree in co-relation 5086. Up to 952 conditions per place. [2022-12-13 09:29:18,883 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,883 INFO L226 LiptonReduction]: Number of co-enabled transitions 1954 [2022-12-13 09:29:18,887 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:18,888 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 137 [2022-12-13 09:29:18,888 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 553 flow [2022-12-13 09:29:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:18,888 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:18,888 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 09:29:18,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1932087196, now seen corresponding path program 2 times [2022-12-13 09:29:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:18,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319028643] [2022-12-13 09:29:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319028643] [2022-12-13 09:29:19,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319028643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:19,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:19,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:29:19,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635838087] [2022-12-13 09:29:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:19,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:19,456 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2022-12-13 09:29:19,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:19,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:19,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2022-12-13 09:29:19,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:21,694 INFO L130 PetriNetUnfolder]: 22475/32264 cut-off events. [2022-12-13 09:29:21,694 INFO L131 PetriNetUnfolder]: For 48680/48680 co-relation queries the response was YES. [2022-12-13 09:29:21,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102568 conditions, 32264 events. 22475/32264 cut-off events. For 48680/48680 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 202546 event pairs, 4847 based on Foata normal form. 39/26700 useless extension candidates. Maximal degree in co-relation 102546. Up to 21968 conditions per place. [2022-12-13 09:29:21,921 INFO L137 encePairwiseOnDemand]: 28/40 looper letters, 81 selfloop transitions, 46 changer transitions 0/137 dead transitions. [2022-12-13 09:29:21,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 137 transitions, 1087 flow [2022-12-13 09:29:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2022-12-13 09:29:21,922 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-13 09:29:21,922 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 553 flow. Second operand 4 states and 112 transitions. [2022-12-13 09:29:21,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 137 transitions, 1087 flow [2022-12-13 09:29:21,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1069 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 09:29:21,997 INFO L231 Difference]: Finished difference. Result has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:21,997 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=939, PETRI_PLACES=73, PETRI_TRANSITIONS=105} [2022-12-13 09:29:22,000 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -10 predicate places. [2022-12-13 09:29:22,000 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:22,000 INFO L89 Accepts]: Start accepts. Operand has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:22,001 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:22,001 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:22,001 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:22,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:22,131 INFO L130 PetriNetUnfolder]: 873/1978 cut-off events. [2022-12-13 09:29:22,131 INFO L131 PetriNetUnfolder]: For 3816/4409 co-relation queries the response was YES. [2022-12-13 09:29:22,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1978 events. 873/1978 cut-off events. For 3816/4409 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 15182 event pairs, 186 based on Foata normal form. 53/1561 useless extension candidates. Maximal degree in co-relation 7365. Up to 1057 conditions per place. [2022-12-13 09:29:22,152 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:22,152 INFO L226 LiptonReduction]: Number of co-enabled transitions 2294 [2022-12-13 09:29:22,164 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:22,165 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 165 [2022-12-13 09:29:22,165 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 105 transitions, 939 flow [2022-12-13 09:29:22,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:22,165 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:22,165 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:22,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 09:29:22,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1071619764, now seen corresponding path program 3 times [2022-12-13 09:29:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395101377] [2022-12-13 09:29:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:22,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:22,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395101377] [2022-12-13 09:29:22,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395101377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:22,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:22,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:29:22,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536204844] [2022-12-13 09:29:22,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:22,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:22,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:22,385 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:22,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 105 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:22,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:22,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:22,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:24,961 INFO L130 PetriNetUnfolder]: 19670/28727 cut-off events. [2022-12-13 09:29:24,962 INFO L131 PetriNetUnfolder]: For 85513/86463 co-relation queries the response was YES. [2022-12-13 09:29:25,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106915 conditions, 28727 events. 19670/28727 cut-off events. For 85513/86463 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 189104 event pairs, 6641 based on Foata normal form. 626/24013 useless extension candidates. Maximal degree in co-relation 106889. Up to 22617 conditions per place. [2022-12-13 09:29:25,138 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 97 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2022-12-13 09:29:25,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1383 flow [2022-12-13 09:29:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2022-12-13 09:29:25,139 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6875 [2022-12-13 09:29:25,139 INFO L175 Difference]: Start difference. First operand has 73 places, 105 transitions, 939 flow. Second operand 4 states and 110 transitions. [2022-12-13 09:29:25,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1383 flow [2022-12-13 09:29:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 142 transitions, 1349 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-12-13 09:29:25,179 INFO L231 Difference]: Finished difference. Result has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,179 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1057, PETRI_PLACES=77, PETRI_TRANSITIONS=111} [2022-12-13 09:29:25,180 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2022-12-13 09:29:25,180 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:25,180 INFO L89 Accepts]: Start accepts. Operand has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,181 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:25,181 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:25,181 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,354 INFO L130 PetriNetUnfolder]: 904/2063 cut-off events. [2022-12-13 09:29:25,354 INFO L131 PetriNetUnfolder]: For 4744/5298 co-relation queries the response was YES. [2022-12-13 09:29:25,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 2063 events. 904/2063 cut-off events. For 4744/5298 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 16109 event pairs, 219 based on Foata normal form. 48/1610 useless extension candidates. Maximal degree in co-relation 7958. Up to 1084 conditions per place. [2022-12-13 09:29:25,379 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,379 INFO L226 LiptonReduction]: Number of co-enabled transitions 2404 [2022-12-13 09:29:25,386 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:25,386 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 206 [2022-12-13 09:29:25,386 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 111 transitions, 1057 flow [2022-12-13 09:29:25,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:25,387 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:25,387 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:25,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 09:29:25,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1879760509, now seen corresponding path program 1 times [2022-12-13 09:29:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037106781] [2022-12-13 09:29:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:25,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037106781] [2022-12-13 09:29:25,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037106781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:25,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:25,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:29:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538564518] [2022-12-13 09:29:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 09:29:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 09:29:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 09:29:25,769 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:25,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 111 transitions, 1057 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:25,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:25,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:25,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:28,319 INFO L130 PetriNetUnfolder]: 20015/29240 cut-off events. [2022-12-13 09:29:28,319 INFO L131 PetriNetUnfolder]: For 101353/102279 co-relation queries the response was YES. [2022-12-13 09:29:28,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112587 conditions, 29240 events. 20015/29240 cut-off events. For 101353/102279 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 193002 event pairs, 4882 based on Foata normal form. 596/24309 useless extension candidates. Maximal degree in co-relation 112558. Up to 21798 conditions per place. [2022-12-13 09:29:28,527 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 105 selfloop transitions, 31 changer transitions 0/157 dead transitions. [2022-12-13 09:29:28,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 157 transitions, 1628 flow [2022-12-13 09:29:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:29:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:29:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2022-12-13 09:29:28,529 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7125 [2022-12-13 09:29:28,529 INFO L175 Difference]: Start difference. First operand has 77 places, 111 transitions, 1057 flow. Second operand 4 states and 114 transitions. [2022-12-13 09:29:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 157 transitions, 1628 flow [2022-12-13 09:29:28,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 157 transitions, 1588 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:28,688 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,688 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1266, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2022-12-13 09:29:28,688 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -3 predicate places. [2022-12-13 09:29:28,688 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:28,689 INFO L89 Accepts]: Start accepts. Operand has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,689 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:28,689 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:28,689 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,907 INFO L130 PetriNetUnfolder]: 910/2106 cut-off events. [2022-12-13 09:29:28,907 INFO L131 PetriNetUnfolder]: For 5735/6418 co-relation queries the response was YES. [2022-12-13 09:29:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8496 conditions, 2106 events. 910/2106 cut-off events. For 5735/6418 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 16753 event pairs, 201 based on Foata normal form. 62/1650 useless extension candidates. Maximal degree in co-relation 8468. Up to 1094 conditions per place. [2022-12-13 09:29:28,927 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,927 INFO L226 LiptonReduction]: Number of co-enabled transitions 2612 [2022-12-13 09:29:28,932 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:28,933 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 245 [2022-12-13 09:29:28,933 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 1266 flow [2022-12-13 09:29:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:28,933 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:28,933 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:28,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 09:29:28,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1933681842, now seen corresponding path program 1 times [2022-12-13 09:29:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967182224] [2022-12-13 09:29:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:29,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967182224] [2022-12-13 09:29:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967182224] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:29,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:29,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:29:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234374724] [2022-12-13 09:29:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:29,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 09:29:29,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 1266 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:29,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:29,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 09:29:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:31,909 INFO L130 PetriNetUnfolder]: 22181/32235 cut-off events. [2022-12-13 09:29:31,910 INFO L131 PetriNetUnfolder]: For 134630/135942 co-relation queries the response was YES. [2022-12-13 09:29:32,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130961 conditions, 32235 events. 22181/32235 cut-off events. For 134630/135942 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 215871 event pairs, 5467 based on Foata normal form. 877/27054 useless extension candidates. Maximal degree in co-relation 130930. Up to 21728 conditions per place. [2022-12-13 09:29:32,192 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 106 selfloop transitions, 56 changer transitions 0/183 dead transitions. [2022-12-13 09:29:32,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 183 transitions, 1994 flow [2022-12-13 09:29:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 09:29:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 09:29:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2022-12-13 09:29:32,193 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2022-12-13 09:29:32,193 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 1266 flow. Second operand 6 states and 152 transitions. [2022-12-13 09:29:32,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 183 transitions, 1994 flow [2022-12-13 09:29:32,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 183 transitions, 1944 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:32,472 INFO L231 Difference]: Finished difference. Result has 85 places, 141 transitions, 1645 flow [2022-12-13 09:29:32,472 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1645, PETRI_PLACES=85, PETRI_TRANSITIONS=141} [2022-12-13 09:29:32,473 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2022-12-13 09:29:32,473 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:32,473 INFO L89 Accepts]: Start accepts. Operand has 85 places, 141 transitions, 1645 flow [2022-12-13 09:29:32,479 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:32,479 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:32,479 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 141 transitions, 1645 flow [2022-12-13 09:29:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 141 transitions, 1645 flow [2022-12-13 09:29:32,639 INFO L130 PetriNetUnfolder]: 1028/2288 cut-off events. [2022-12-13 09:29:32,639 INFO L131 PetriNetUnfolder]: For 8453/9338 co-relation queries the response was YES. [2022-12-13 09:29:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10399 conditions, 2288 events. 1028/2288 cut-off events. For 8453/9338 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 17997 event pairs, 191 based on Foata normal form. 113/1880 useless extension candidates. Maximal degree in co-relation 10369. Up to 1255 conditions per place. [2022-12-13 09:29:32,661 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 141 transitions, 1645 flow [2022-12-13 09:29:32,661 INFO L226 LiptonReduction]: Number of co-enabled transitions 2956 [2022-12-13 09:29:33,396 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:29:33,397 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 924 [2022-12-13 09:29:33,397 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 141 transitions, 1655 flow [2022-12-13 09:29:33,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:33,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:33,398 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 09:29:33,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1879815286, now seen corresponding path program 1 times [2022-12-13 09:29:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099147964] [2022-12-13 09:29:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:33,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:33,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099147964] [2022-12-13 09:29:33,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099147964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:33,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:33,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:29:33,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20233684] [2022-12-13 09:29:33,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:33,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 09:29:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 09:29:33,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 09:29:33,922 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 09:29:33,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 141 transitions, 1655 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:33,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:33,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 09:29:33,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:37,251 INFO L130 PetriNetUnfolder]: 26828/37867 cut-off events. [2022-12-13 09:29:37,252 INFO L131 PetriNetUnfolder]: For 170089/170089 co-relation queries the response was YES. [2022-12-13 09:29:37,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164312 conditions, 37867 events. 26828/37867 cut-off events. For 170089/170089 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 235633 event pairs, 7649 based on Foata normal form. 96/31340 useless extension candidates. Maximal degree in co-relation 164279. Up to 30488 conditions per place. [2022-12-13 09:29:37,700 INFO L137 encePairwiseOnDemand]: 29/41 looper letters, 144 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2022-12-13 09:29:37,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2690 flow [2022-12-13 09:29:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 09:29:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 09:29:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2022-12-13 09:29:37,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2022-12-13 09:29:37,703 INFO L175 Difference]: Start difference. First operand has 85 places, 141 transitions, 1655 flow. Second operand 6 states and 145 transitions. [2022-12-13 09:29:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2690 flow [2022-12-13 09:29:38,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 221 transitions, 2568 flow, removed 44 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:38,198 INFO L231 Difference]: Finished difference. Result has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,199 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2081, PETRI_PLACES=91, PETRI_TRANSITIONS=167} [2022-12-13 09:29:38,199 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2022-12-13 09:29:38,199 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:38,199 INFO L89 Accepts]: Start accepts. Operand has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,200 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:38,200 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:38,200 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,515 INFO L130 PetriNetUnfolder]: 1080/2443 cut-off events. [2022-12-13 09:29:38,515 INFO L131 PetriNetUnfolder]: For 10091/11299 co-relation queries the response was YES. [2022-12-13 09:29:38,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12054 conditions, 2443 events. 1080/2443 cut-off events. For 10091/11299 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 19512 event pairs, 152 based on Foata normal form. 131/2020 useless extension candidates. Maximal degree in co-relation 12021. Up to 1345 conditions per place. [2022-12-13 09:29:38,542 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,542 INFO L226 LiptonReduction]: Number of co-enabled transitions 3392 [2022-12-13 09:29:38,560 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:38,561 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 362 [2022-12-13 09:29:38,561 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 167 transitions, 2081 flow [2022-12-13 09:29:38,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:38,561 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:38,561 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:38,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 09:29:38,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:38,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1280792752, now seen corresponding path program 2 times [2022-12-13 09:29:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:38,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616585922] [2022-12-13 09:29:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:39,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616585922] [2022-12-13 09:29:39,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616585922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:39,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:39,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:29:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334706454] [2022-12-13 09:29:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 09:29:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 09:29:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 09:29:39,043 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 09:29:39,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 167 transitions, 2081 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:39,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:39,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 09:29:39,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:42,908 INFO L130 PetriNetUnfolder]: 28191/39848 cut-off events. [2022-12-13 09:29:42,908 INFO L131 PetriNetUnfolder]: For 205481/205481 co-relation queries the response was YES. [2022-12-13 09:29:43,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184237 conditions, 39848 events. 28191/39848 cut-off events. For 205481/205481 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 248453 event pairs, 5993 based on Foata normal form. 84/32986 useless extension candidates. Maximal degree in co-relation 184201. Up to 31513 conditions per place. [2022-12-13 09:29:43,247 INFO L137 encePairwiseOnDemand]: 30/41 looper letters, 175 selfloop transitions, 101 changer transitions 0/286 dead transitions. [2022-12-13 09:29:43,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 286 transitions, 3662 flow [2022-12-13 09:29:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 09:29:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 09:29:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2022-12-13 09:29:43,249 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2022-12-13 09:29:43,249 INFO L175 Difference]: Start difference. First operand has 91 places, 167 transitions, 2081 flow. Second operand 6 states and 167 transitions. [2022-12-13 09:29:43,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 286 transitions, 3662 flow [2022-12-13 09:29:43,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 286 transitions, 3524 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:43,713 INFO L231 Difference]: Finished difference. Result has 97 places, 222 transitions, 3111 flow [2022-12-13 09:29:43,713 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3111, PETRI_PLACES=97, PETRI_TRANSITIONS=222} [2022-12-13 09:29:43,714 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2022-12-13 09:29:43,714 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:43,714 INFO L89 Accepts]: Start accepts. Operand has 97 places, 222 transitions, 3111 flow [2022-12-13 09:29:43,715 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:43,715 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:43,715 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 222 transitions, 3111 flow [2022-12-13 09:29:43,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 222 transitions, 3111 flow [2022-12-13 09:29:43,925 INFO L130 PetriNetUnfolder]: 1149/2538 cut-off events. [2022-12-13 09:29:43,925 INFO L131 PetriNetUnfolder]: For 14940/17544 co-relation queries the response was YES. [2022-12-13 09:29:43,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14064 conditions, 2538 events. 1149/2538 cut-off events. For 14940/17544 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 20088 event pairs, 101 based on Foata normal form. 84/2086 useless extension candidates. Maximal degree in co-relation 14027. Up to 1423 conditions per place. [2022-12-13 09:29:43,954 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 222 transitions, 3111 flow [2022-12-13 09:29:43,954 INFO L226 LiptonReduction]: Number of co-enabled transitions 4252 [2022-12-13 09:29:45,086 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:29:45,095 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1381 [2022-12-13 09:29:45,095 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 222 transitions, 3151 flow [2022-12-13 09:29:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:45,095 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:45,095 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:45,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 09:29:45,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1052425387, now seen corresponding path program 1 times [2022-12-13 09:29:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315426557] [2022-12-13 09:29:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:45,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315426557] [2022-12-13 09:29:45,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315426557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:45,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:45,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 09:29:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900767130] [2022-12-13 09:29:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:45,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 09:29:45,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 09:29:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:29:45,433 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2022-12-13 09:29:45,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 222 transitions, 3151 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:45,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:45,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2022-12-13 09:29:45,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:49,574 INFO L130 PetriNetUnfolder]: 25835/37750 cut-off events. [2022-12-13 09:29:49,574 INFO L131 PetriNetUnfolder]: For 279600/281849 co-relation queries the response was YES. [2022-12-13 09:29:49,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190569 conditions, 37750 events. 25835/37750 cut-off events. For 279600/281849 co-relation queries the response was YES. Maximal size of possible extension queue 1882. Compared 261412 event pairs, 5379 based on Foata normal form. 866/31269 useless extension candidates. Maximal degree in co-relation 190529. Up to 25403 conditions per place. [2022-12-13 09:29:49,972 INFO L137 encePairwiseOnDemand]: 36/44 looper letters, 162 selfloop transitions, 69 changer transitions 0/274 dead transitions. [2022-12-13 09:29:49,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 274 transitions, 3958 flow [2022-12-13 09:29:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:29:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:29:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2022-12-13 09:29:49,974 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 09:29:49,974 INFO L175 Difference]: Start difference. First operand has 97 places, 222 transitions, 3151 flow. Second operand 5 states and 145 transitions. [2022-12-13 09:29:49,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 274 transitions, 3958 flow [2022-12-13 09:29:50,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 274 transitions, 3833 flow, removed 31 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:50,849 INFO L231 Difference]: Finished difference. Result has 100 places, 232 transitions, 3390 flow [2022-12-13 09:29:50,849 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3390, PETRI_PLACES=100, PETRI_TRANSITIONS=232} [2022-12-13 09:29:50,849 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-12-13 09:29:50,849 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:50,849 INFO L89 Accepts]: Start accepts. Operand has 100 places, 232 transitions, 3390 flow [2022-12-13 09:29:50,850 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:50,850 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:50,850 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 232 transitions, 3390 flow [2022-12-13 09:29:50,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 232 transitions, 3390 flow [2022-12-13 09:29:51,192 INFO L130 PetriNetUnfolder]: 1173/2650 cut-off events. [2022-12-13 09:29:51,192 INFO L131 PetriNetUnfolder]: For 17539/20147 co-relation queries the response was YES. [2022-12-13 09:29:51,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15107 conditions, 2650 events. 1173/2650 cut-off events. For 17539/20147 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 21600 event pairs, 130 based on Foata normal form. 91/2172 useless extension candidates. Maximal degree in co-relation 15068. Up to 1478 conditions per place. [2022-12-13 09:29:51,226 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 232 transitions, 3390 flow [2022-12-13 09:29:51,227 INFO L226 LiptonReduction]: Number of co-enabled transitions 4462 [2022-12-13 09:29:52,067 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:29:52,068 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1219 [2022-12-13 09:29:52,068 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 232 transitions, 3406 flow [2022-12-13 09:29:52,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:52,068 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:52,068 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:52,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 09:29:52,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:52,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1855191919, now seen corresponding path program 2 times [2022-12-13 09:29:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:52,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794035623] [2022-12-13 09:29:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:52,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:52,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794035623] [2022-12-13 09:29:52,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794035623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:52,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:52,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 09:29:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790665590] [2022-12-13 09:29:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 09:29:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 09:29:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:29:52,363 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2022-12-13 09:29:52,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 232 transitions, 3406 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:52,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:52,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2022-12-13 09:29:52,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:57,136 INFO L130 PetriNetUnfolder]: 29254/43030 cut-off events. [2022-12-13 09:29:57,136 INFO L131 PetriNetUnfolder]: For 391123/394493 co-relation queries the response was YES. [2022-12-13 09:29:57,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223231 conditions, 43030 events. 29254/43030 cut-off events. For 391123/394493 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 309126 event pairs, 6295 based on Foata normal form. 1091/35619 useless extension candidates. Maximal degree in co-relation 223189. Up to 23462 conditions per place. [2022-12-13 09:29:57,599 INFO L137 encePairwiseOnDemand]: 33/44 looper letters, 140 selfloop transitions, 119 changer transitions 0/302 dead transitions. [2022-12-13 09:29:57,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 302 transitions, 4427 flow [2022-12-13 09:29:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 09:29:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 09:29:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2022-12-13 09:29:57,601 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 09:29:57,601 INFO L175 Difference]: Start difference. First operand has 100 places, 232 transitions, 3406 flow. Second operand 6 states and 174 transitions. [2022-12-13 09:29:57,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 302 transitions, 4427 flow [2022-12-13 09:29:58,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 302 transitions, 4367 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-12-13 09:29:59,002 INFO L231 Difference]: Finished difference. Result has 107 places, 247 transitions, 3981 flow [2022-12-13 09:29:59,002 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3981, PETRI_PLACES=107, PETRI_TRANSITIONS=247} [2022-12-13 09:29:59,003 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 24 predicate places. [2022-12-13 09:29:59,003 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:59,003 INFO L89 Accepts]: Start accepts. Operand has 107 places, 247 transitions, 3981 flow [2022-12-13 09:29:59,004 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:59,004 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:59,004 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 247 transitions, 3981 flow [2022-12-13 09:29:59,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 247 transitions, 3981 flow [2022-12-13 09:29:59,348 INFO L130 PetriNetUnfolder]: 1282/2982 cut-off events. [2022-12-13 09:29:59,348 INFO L131 PetriNetUnfolder]: For 23919/26222 co-relation queries the response was YES. [2022-12-13 09:29:59,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2982 events. 1282/2982 cut-off events. For 23919/26222 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25601 event pairs, 150 based on Foata normal form. 88/2400 useless extension candidates. Maximal degree in co-relation 18006. Up to 1639 conditions per place. [2022-12-13 09:29:59,391 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 247 transitions, 3981 flow [2022-12-13 09:29:59,392 INFO L226 LiptonReduction]: Number of co-enabled transitions 4780 [2022-12-13 09:29:59,699 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:29:59,700 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 697 [2022-12-13 09:29:59,700 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 246 transitions, 3962 flow [2022-12-13 09:29:59,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:59,701 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:59,701 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:29:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 09:29:59,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:29:59,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1855271899, now seen corresponding path program 3 times [2022-12-13 09:29:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:59,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30535442] [2022-12-13 09:29:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:59,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:59,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30535442] [2022-12-13 09:29:59,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30535442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:59,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:59,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 09:29:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259451931] [2022-12-13 09:29:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 09:29:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 09:29:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:29:59,998 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2022-12-13 09:29:59,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 246 transitions, 3962 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:59,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:59,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2022-12-13 09:29:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:30:05,046 INFO L130 PetriNetUnfolder]: 30018/44252 cut-off events. [2022-12-13 09:30:05,047 INFO L131 PetriNetUnfolder]: For 472452/475455 co-relation queries the response was YES. [2022-12-13 09:30:05,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244862 conditions, 44252 events. 30018/44252 cut-off events. For 472452/475455 co-relation queries the response was YES. Maximal size of possible extension queue 2390. Compared 320468 event pairs, 7244 based on Foata normal form. 738/36114 useless extension candidates. Maximal degree in co-relation 244816. Up to 30858 conditions per place. [2022-12-13 09:30:05,549 INFO L137 encePairwiseOnDemand]: 33/41 looper letters, 181 selfloop transitions, 66 changer transitions 0/290 dead transitions. [2022-12-13 09:30:05,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 290 transitions, 4737 flow [2022-12-13 09:30:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:30:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:30:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2022-12-13 09:30:05,551 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2022-12-13 09:30:05,551 INFO L175 Difference]: Start difference. First operand has 107 places, 246 transitions, 3962 flow. Second operand 5 states and 140 transitions. [2022-12-13 09:30:05,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 290 transitions, 4737 flow [2022-12-13 09:30:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 290 transitions, 4569 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-12-13 09:30:07,214 INFO L231 Difference]: Finished difference. Result has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,214 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4098, PETRI_PLACES=109, PETRI_TRANSITIONS=252} [2022-12-13 09:30:07,215 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 26 predicate places. [2022-12-13 09:30:07,215 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:30:07,215 INFO L89 Accepts]: Start accepts. Operand has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,217 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:30:07,217 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:30:07,217 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,506 INFO L130 PetriNetUnfolder]: 1296/3068 cut-off events. [2022-12-13 09:30:07,507 INFO L131 PetriNetUnfolder]: For 24677/27153 co-relation queries the response was YES. [2022-12-13 09:30:07,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18414 conditions, 3068 events. 1296/3068 cut-off events. For 24677/27153 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 26809 event pairs, 158 based on Foata normal form. 83/2446 useless extension candidates. Maximal degree in co-relation 18370. Up to 1669 conditions per place. [2022-12-13 09:30:07,553 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,554 INFO L226 LiptonReduction]: Number of co-enabled transitions 4874 [2022-12-13 09:30:07,565 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:30:07,566 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 351 [2022-12-13 09:30:07,566 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 252 transitions, 4098 flow [2022-12-13 09:30:07,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:30:07,566 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:30:07,566 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:30:07,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 09:30:07,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:30:07,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:30:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1859394589, now seen corresponding path program 4 times [2022-12-13 09:30:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:30:07,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836594720] [2022-12-13 09:30:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:30:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:30:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:30:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:30:08,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:30:08,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836594720] [2022-12-13 09:30:08,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836594720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:30:08,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:30:08,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 09:30:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573305734] [2022-12-13 09:30:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:30:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 09:30:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:30:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 09:30:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 09:30:08,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 09:30:08,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 252 transitions, 4098 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:30:08,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:30:08,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 09:30:08,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:30:14,386 INFO L130 PetriNetUnfolder]: 37819/53684 cut-off events. [2022-12-13 09:30:14,387 INFO L131 PetriNetUnfolder]: For 498385/498385 co-relation queries the response was YES. [2022-12-13 09:30:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288634 conditions, 53684 events. 37819/53684 cut-off events. For 498385/498385 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 355688 event pairs, 7261 based on Foata normal form. 180/44112 useless extension candidates. Maximal degree in co-relation 288587. Up to 37745 conditions per place. [2022-12-13 09:30:14,967 INFO L137 encePairwiseOnDemand]: 29/41 looper letters, 207 selfloop transitions, 124 changer transitions 0/341 dead transitions. [2022-12-13 09:30:14,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 341 transitions, 5366 flow [2022-12-13 09:30:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 09:30:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 09:30:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2022-12-13 09:30:14,969 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6794425087108014 [2022-12-13 09:30:14,969 INFO L175 Difference]: Start difference. First operand has 109 places, 252 transitions, 4098 flow. Second operand 7 states and 195 transitions. [2022-12-13 09:30:14,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 341 transitions, 5366 flow [2022-12-13 09:30:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 341 transitions, 5235 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-13 09:30:16,674 INFO L231 Difference]: Finished difference. Result has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:16,674 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4531, PETRI_PLACES=115, PETRI_TRANSITIONS=263} [2022-12-13 09:30:16,675 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-12-13 09:30:16,675 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:30:16,675 INFO L89 Accepts]: Start accepts. Operand has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:16,676 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:30:16,676 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:30:16,676 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:16,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:16,959 INFO L130 PetriNetUnfolder]: 1314/3140 cut-off events. [2022-12-13 09:30:16,959 INFO L131 PetriNetUnfolder]: For 27075/29231 co-relation queries the response was YES. [2022-12-13 09:30:16,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19288 conditions, 3140 events. 1314/3140 cut-off events. For 27075/29231 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 27756 event pairs, 164 based on Foata normal form. 84/2495 useless extension candidates. Maximal degree in co-relation 19242. Up to 1699 conditions per place. [2022-12-13 09:30:17,008 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:17,008 INFO L226 LiptonReduction]: Number of co-enabled transitions 5044 [2022-12-13 09:30:17,024 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:30:17,025 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 350 [2022-12-13 09:30:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 263 transitions, 4531 flow [2022-12-13 09:30:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:30:17,025 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:30:17,025 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:30:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 09:30:17,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:30:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:30:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1106151053, now seen corresponding path program 1 times [2022-12-13 09:30:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:30:17,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628671656] [2022-12-13 09:30:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:30:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:30:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:30:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:30:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:30:17,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628671656] [2022-12-13 09:30:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628671656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:30:17,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:30:17,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:30:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086333018] [2022-12-13 09:30:17,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:30:17,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:30:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:30:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:30:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:30:17,146 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 09:30:17,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 263 transitions, 4531 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:30:17,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:30:17,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 09:30:17,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand