/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:55:11,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:55:11,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:55:11,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:55:11,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:55:11,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:55:11,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:55:11,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:55:11,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:55:11,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:55:11,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:55:11,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:55:11,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:55:11,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:55:11,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:55:11,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:55:11,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:55:11,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:55:11,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:55:11,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:55:11,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:55:11,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:55:11,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:55:11,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:55:11,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:55:11,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:55:11,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:55:11,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:55:11,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:55:11,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:55:11,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:55:11,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:55:11,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:55:11,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:55:11,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:55:11,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:55:11,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:55:11,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:55:11,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:55:11,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:55:11,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:55:11,915 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:55:11,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:55:11,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:55:11,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:55:11,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:55:11,941 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:55:11,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:55:11,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:55:11,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:55:11,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:55:11,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:55:11,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:55:11,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:55:11,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:55:11,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:55:11,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:55:11,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:11,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:55:11,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:55:11,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:55:11,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:55:11,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:55:11,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:55:11,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:55:12,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:55:12,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:55:12,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:55:12,245 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:55:12,245 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:55:12,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:55:13,153 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:55:13,390 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:55:13,390 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:55:13,407 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f49c39c1/b25df62e8c7746e1be797889f6c18690/FLAGbd575677e [2022-12-13 11:55:13,425 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f49c39c1/b25df62e8c7746e1be797889f6c18690 [2022-12-13 11:55:13,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:55:13,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:55:13,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:13,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:55:13,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:55:13,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:13,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8dd8ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13, skipping insertion in model container [2022-12-13 11:55:13,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:13,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:55:13,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:55:13,636 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:55:13,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:13,833 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:55:13,842 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:55:13,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:55:13,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:55:13,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:13,932 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:55:13,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13 WrapperNode [2022-12-13 11:55:13,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:13,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:13,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:55:13,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:55:13,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:13,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:13,999 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-12-13 11:55:13,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:14,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:55:14,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:55:14,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:55:14,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:55:14,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:55:14,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:55:14,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:55:14,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (1/1) ... [2022-12-13 11:55:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:55:14,092 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 11:55:14,098 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 11:55:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:55:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:55:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:55:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:55:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:55:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:55:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:55:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:55:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:55:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:55:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:55:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:55:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:55:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:55:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:55:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:55:14,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:55:14,121 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 11:55:14,262 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:55:14,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:55:14,547 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:55:14,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:55:14,649 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:55:14,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:14 BoogieIcfgContainer [2022-12-13 11:55:14,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:55:14,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:55:14,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:55:14,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:55:14,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:55:13" (1/3) ... [2022-12-13 11:55:14,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6dca58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:14, skipping insertion in model container [2022-12-13 11:55:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:13" (2/3) ... [2022-12-13 11:55:14,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6dca58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:14, skipping insertion in model container [2022-12-13 11:55:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:14" (3/3) ... [2022-12-13 11:55:14,659 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:55:14,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:55:14,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:55:14,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:55:14,717 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:55:14,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 11:55:14,806 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 11:55:14,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:14,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 11:55:14,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 11:55:14,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 266 flow [2022-12-13 11:55:14,819 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:14,837 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 11:55:14,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 266 flow [2022-12-13 11:55:14,881 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 11:55:14,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 11:55:14,887 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 11:55:14,887 INFO L226 LiptonReduction]: Number of co-enabled transitions 3270 [2022-12-13 11:55:19,691 INFO L241 LiptonReduction]: Total number of compositions: 102 [2022-12-13 11:55:19,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:55:19,714 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;@7a23d6a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:55:19,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:55:19,724 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 11:55:19,724 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:19,725 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:19,725 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:55:19,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash 572500, now seen corresponding path program 1 times [2022-12-13 11:55:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:19,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68183970] [2022-12-13 11:55:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:20,062 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 11:55:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:20,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68183970] [2022-12-13 11:55:20,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68183970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:20,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:20,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458859581] [2022-12-13 11:55:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:20,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:20,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:20,083 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2022-12-13 11:55:20,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 11:55:20,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:20,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2022-12-13 11:55:20,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:28,841 INFO L130 PetriNetUnfolder]: 89490/129391 cut-off events. [2022-12-13 11:55:28,842 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-13 11:55:29,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247130 conditions, 129391 events. 89490/129391 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 5901. Compared 1062831 event pairs, 13430 based on Foata normal form. 0/82283 useless extension candidates. Maximal degree in co-relation 247118. Up to 98405 conditions per place. [2022-12-13 11:55:29,294 INFO L137 encePairwiseOnDemand]: 79/83 looper letters, 52 selfloop transitions, 2 changer transitions 71/140 dead transitions. [2022-12-13 11:55:29,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 549 flow [2022-12-13 11:55:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2022-12-13 11:55:29,303 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2022-12-13 11:55:29,304 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 178 flow. Second operand 3 states and 175 transitions. [2022-12-13 11:55:29,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 549 flow [2022-12-13 11:55:29,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 542 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:29,310 INFO L231 Difference]: Finished difference. Result has 92 places, 45 transitions, 102 flow [2022-12-13 11:55:29,311 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=92, PETRI_TRANSITIONS=45} [2022-12-13 11:55:29,314 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -4 predicate places. [2022-12-13 11:55:29,314 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:29,315 INFO L89 Accepts]: Start accepts. Operand has 92 places, 45 transitions, 102 flow [2022-12-13 11:55:29,318 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:29,318 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:29,319 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 45 transitions, 102 flow [2022-12-13 11:55:29,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 45 transitions, 102 flow [2022-12-13 11:55:29,324 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-12-13 11:55:29,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:55:29,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 123 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 11:55:29,328 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 45 transitions, 102 flow [2022-12-13 11:55:29,328 INFO L226 LiptonReduction]: Number of co-enabled transitions 1210 [2022-12-13 11:55:29,486 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:29,488 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 174 [2022-12-13 11:55:29,488 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2022-12-13 11:55:29,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 11:55:29,489 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:29,489 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:55:29,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1165077413, now seen corresponding path program 1 times [2022-12-13 11:55:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329576728] [2022-12-13 11:55:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:29,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:29,716 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 11:55:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329576728] [2022-12-13 11:55:29,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329576728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:29,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:29,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110974303] [2022-12-13 11:55:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:29,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:29,719 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2022-12-13 11:55:29,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 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 11:55:29,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:29,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2022-12-13 11:55:29,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:34,012 INFO L130 PetriNetUnfolder]: 50411/69517 cut-off events. [2022-12-13 11:55:34,012 INFO L131 PetriNetUnfolder]: For 2700/2700 co-relation queries the response was YES. [2022-12-13 11:55:34,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140138 conditions, 69517 events. 50411/69517 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 438052 event pairs, 19725 based on Foata normal form. 0/55941 useless extension candidates. Maximal degree in co-relation 140128. Up to 35173 conditions per place. [2022-12-13 11:55:34,374 INFO L137 encePairwiseOnDemand]: 34/45 looper letters, 51 selfloop transitions, 10 changer transitions 2/74 dead transitions. [2022-12-13 11:55:34,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 292 flow [2022-12-13 11:55:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-13 11:55:34,378 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-12-13 11:55:34,378 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2022-12-13 11:55:34,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 292 flow [2022-12-13 11:55:34,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:34,381 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 174 flow [2022-12-13 11:55:34,382 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 11:55:34,383 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2022-12-13 11:55:34,383 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:34,383 INFO L89 Accepts]: Start accepts. Operand has 58 places, 53 transitions, 174 flow [2022-12-13 11:55:34,384 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:34,384 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:34,385 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 53 transitions, 174 flow [2022-12-13 11:55:34,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 174 flow [2022-12-13 11:55:34,452 INFO L130 PetriNetUnfolder]: 520/1541 cut-off events. [2022-12-13 11:55:34,453 INFO L131 PetriNetUnfolder]: For 154/175 co-relation queries the response was YES. [2022-12-13 11:55:34,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2771 conditions, 1541 events. 520/1541 cut-off events. For 154/175 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 13719 event pairs, 212 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2762. Up to 491 conditions per place. [2022-12-13 11:55:34,466 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 53 transitions, 174 flow [2022-12-13 11:55:34,466 INFO L226 LiptonReduction]: Number of co-enabled transitions 1458 [2022-12-13 11:55:34,522 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:34,524 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 141 [2022-12-13 11:55:34,525 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 174 flow [2022-12-13 11:55:34,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 11:55:34,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:34,527 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:55:34,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1757661410, now seen corresponding path program 1 times [2022-12-13 11:55:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974549113] [2022-12-13 11:55:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,643 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 11:55:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:34,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974549113] [2022-12-13 11:55:34,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974549113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:34,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:34,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370910588] [2022-12-13 11:55:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:34,645 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:55:34,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:55:34,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:34,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:55:34,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:37,857 INFO L130 PetriNetUnfolder]: 36514/51404 cut-off events. [2022-12-13 11:55:37,857 INFO L131 PetriNetUnfolder]: For 21371/21371 co-relation queries the response was YES. [2022-12-13 11:55:37,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124926 conditions, 51404 events. 36514/51404 cut-off events. For 21371/21371 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 322532 event pairs, 9496 based on Foata normal form. 498/43079 useless extension candidates. Maximal degree in co-relation 124914. Up to 18721 conditions per place. [2022-12-13 11:55:38,158 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 68 selfloop transitions, 9 changer transitions 2/90 dead transitions. [2022-12-13 11:55:38,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 436 flow [2022-12-13 11:55:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 11:55:38,160 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 11:55:38,160 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 174 flow. Second operand 4 states and 116 transitions. [2022-12-13 11:55:38,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 436 flow [2022-12-13 11:55:38,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:38,210 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 214 flow [2022-12-13 11:55:38,210 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-12-13 11:55:38,211 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -35 predicate places. [2022-12-13 11:55:38,211 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:38,211 INFO L89 Accepts]: Start accepts. Operand has 61 places, 56 transitions, 214 flow [2022-12-13 11:55:38,212 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:38,213 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:38,213 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 214 flow [2022-12-13 11:55:38,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 214 flow [2022-12-13 11:55:38,255 INFO L130 PetriNetUnfolder]: 288/898 cut-off events. [2022-12-13 11:55:38,255 INFO L131 PetriNetUnfolder]: For 357/360 co-relation queries the response was YES. [2022-12-13 11:55:38,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 898 events. 288/898 cut-off events. For 357/360 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6907 event pairs, 78 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1818. Up to 272 conditions per place. [2022-12-13 11:55:38,263 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 56 transitions, 214 flow [2022-12-13 11:55:38,263 INFO L226 LiptonReduction]: Number of co-enabled transitions 1518 [2022-12-13 11:55:38,271 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:38,272 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 61 [2022-12-13 11:55:38,272 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 214 flow [2022-12-13 11:55:38,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:55:38,272 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:38,272 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:38,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:55:38,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1346386001, now seen corresponding path program 1 times [2022-12-13 11:55:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:38,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156849348] [2022-12-13 11:55:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:38,384 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 11:55:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156849348] [2022-12-13 11:55:38,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156849348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:38,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:38,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:38,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964731223] [2022-12-13 11:55:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:38,388 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:55:38,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:55:38,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:38,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:55:38,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:41,468 INFO L130 PetriNetUnfolder]: 32520/45739 cut-off events. [2022-12-13 11:55:41,468 INFO L131 PetriNetUnfolder]: For 28996/28996 co-relation queries the response was YES. [2022-12-13 11:55:41,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116776 conditions, 45739 events. 32520/45739 cut-off events. For 28996/28996 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 287954 event pairs, 3452 based on Foata normal form. 60/38510 useless extension candidates. Maximal degree in co-relation 116761. Up to 21361 conditions per place. [2022-12-13 11:55:41,744 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 73 selfloop transitions, 20 changer transitions 0/104 dead transitions. [2022-12-13 11:55:41,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 574 flow [2022-12-13 11:55:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2022-12-13 11:55:41,745 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2022-12-13 11:55:41,745 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 214 flow. Second operand 4 states and 122 transitions. [2022-12-13 11:55:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 574 flow [2022-12-13 11:55:41,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:41,862 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,863 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2022-12-13 11:55:41,863 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2022-12-13 11:55:41,863 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:41,863 INFO L89 Accepts]: Start accepts. Operand has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,864 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:41,864 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:41,864 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,910 INFO L130 PetriNetUnfolder]: 255/827 cut-off events. [2022-12-13 11:55:41,910 INFO L131 PetriNetUnfolder]: For 1133/1170 co-relation queries the response was YES. [2022-12-13 11:55:41,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 827 events. 255/827 cut-off events. For 1133/1170 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6286 event pairs, 50 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 2147. Up to 237 conditions per place. [2022-12-13 11:55:41,920 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,920 INFO L226 LiptonReduction]: Number of co-enabled transitions 1816 [2022-12-13 11:55:41,924 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:41,925 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 62 [2022-12-13 11:55:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 394 flow [2022-12-13 11:55:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:55:41,925 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:41,925 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:55:41,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1188376676, now seen corresponding path program 1 times [2022-12-13 11:55:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:41,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313316011] [2022-12-13 11:55:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:42,173 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 11:55:42,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:42,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313316011] [2022-12-13 11:55:42,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313316011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:42,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:42,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304559724] [2022-12-13 11:55:42,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:42,177 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2022-12-13 11:55:42,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 11:55:42,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:42,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2022-12-13 11:55:42,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:45,119 INFO L130 PetriNetUnfolder]: 28579/41516 cut-off events. [2022-12-13 11:55:45,119 INFO L131 PetriNetUnfolder]: For 61342/61856 co-relation queries the response was YES. [2022-12-13 11:55:45,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116503 conditions, 41516 events. 28579/41516 cut-off events. For 61342/61856 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 276469 event pairs, 14141 based on Foata normal form. 529/35144 useless extension candidates. Maximal degree in co-relation 116484. Up to 36723 conditions per place. [2022-12-13 11:55:45,496 INFO L137 encePairwiseOnDemand]: 39/43 looper letters, 72 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2022-12-13 11:55:45,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 742 flow [2022-12-13 11:55:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-12-13 11:55:45,497 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2022-12-13 11:55:45,497 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 394 flow. Second operand 3 states and 91 transitions. [2022-12-13 11:55:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 742 flow [2022-12-13 11:55:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:45,566 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,567 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2022-12-13 11:55:45,567 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -28 predicate places. [2022-12-13 11:55:45,567 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:45,567 INFO L89 Accepts]: Start accepts. Operand has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,568 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:45,568 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:45,568 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,611 INFO L130 PetriNetUnfolder]: 237/785 cut-off events. [2022-12-13 11:55:45,611 INFO L131 PetriNetUnfolder]: For 1127/1170 co-relation queries the response was YES. [2022-12-13 11:55:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 785 events. 237/785 cut-off events. For 1127/1170 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5960 event pairs, 24 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 2187. Up to 221 conditions per place. [2022-12-13 11:55:45,619 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,619 INFO L226 LiptonReduction]: Number of co-enabled transitions 2020 [2022-12-13 11:55:45,624 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:45,625 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 58 [2022-12-13 11:55:45,625 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 522 flow [2022-12-13 11:55:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 11:55:45,625 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:45,625 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:45,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:55:45,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1752264893, now seen corresponding path program 1 times [2022-12-13 11:55:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:45,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585402183] [2022-12-13 11:55:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,708 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 11:55:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:45,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585402183] [2022-12-13 11:55:45,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585402183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:45,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:45,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704093510] [2022-12-13 11:55:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:45,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:45,711 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:55:45,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 11:55:45,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:45,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:55:45,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:50,385 INFO L130 PetriNetUnfolder]: 47361/66772 cut-off events. [2022-12-13 11:55:50,385 INFO L131 PetriNetUnfolder]: For 111961/111961 co-relation queries the response was YES. [2022-12-13 11:55:50,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190112 conditions, 66772 events. 47361/66772 cut-off events. For 111961/111961 co-relation queries the response was YES. Maximal size of possible extension queue 2284. Compared 443870 event pairs, 8772 based on Foata normal form. 720/55808 useless extension candidates. Maximal degree in co-relation 190090. Up to 27480 conditions per place. [2022-12-13 11:55:50,782 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 80 selfloop transitions, 34 changer transitions 2/127 dead transitions. [2022-12-13 11:55:50,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 938 flow [2022-12-13 11:55:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2022-12-13 11:55:50,783 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 11:55:50,783 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 522 flow. Second operand 4 states and 129 transitions. [2022-12-13 11:55:50,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 938 flow [2022-12-13 11:55:50,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:50,890 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:50,890 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2022-12-13 11:55:50,891 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -23 predicate places. [2022-12-13 11:55:50,891 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:50,891 INFO L89 Accepts]: Start accepts. Operand has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:50,892 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:50,892 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:50,892 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:50,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:50,943 INFO L130 PetriNetUnfolder]: 225/885 cut-off events. [2022-12-13 11:55:50,943 INFO L131 PetriNetUnfolder]: For 2195/2299 co-relation queries the response was YES. [2022-12-13 11:55:50,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 885 events. 225/885 cut-off events. For 2195/2299 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7379 event pairs, 22 based on Foata normal form. 0/646 useless extension candidates. Maximal degree in co-relation 2756. Up to 224 conditions per place. [2022-12-13 11:55:50,954 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:50,954 INFO L226 LiptonReduction]: Number of co-enabled transitions 2172 [2022-12-13 11:55:51,027 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:55:51,028 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 137 [2022-12-13 11:55:51,028 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 721 flow [2022-12-13 11:55:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 11:55:51,028 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:51,028 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:55:51,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:55:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1752322553, now seen corresponding path program 1 times [2022-12-13 11:55:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:51,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395951151] [2022-12-13 11:55:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:51,190 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 11:55:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:51,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395951151] [2022-12-13 11:55:51,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395951151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:51,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:51,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598184031] [2022-12-13 11:55:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:51,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:51,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:51,192 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2022-12-13 11:55:51,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 721 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 11:55:51,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:51,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2022-12-13 11:55:51,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:58,184 INFO L130 PetriNetUnfolder]: 68136/95339 cut-off events. [2022-12-13 11:55:58,185 INFO L131 PetriNetUnfolder]: For 208841/212296 co-relation queries the response was YES. [2022-12-13 11:55:58,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261874 conditions, 95339 events. 68136/95339 cut-off events. For 208841/212296 co-relation queries the response was YES. Maximal size of possible extension queue 3717. Compared 658982 event pairs, 20662 based on Foata normal form. 1923/66033 useless extension candidates. Maximal degree in co-relation 261848. Up to 92110 conditions per place. [2022-12-13 11:55:58,686 INFO L137 encePairwiseOnDemand]: 29/43 looper letters, 91 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2022-12-13 11:55:58,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 1299 flow [2022-12-13 11:55:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-12-13 11:55:58,687 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7131782945736435 [2022-12-13 11:55:58,687 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 721 flow. Second operand 3 states and 92 transitions. [2022-12-13 11:55:58,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 1299 flow [2022-12-13 11:55:58,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 1295 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:58,742 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 808 flow [2022-12-13 11:55:58,742 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=808, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2022-12-13 11:55:58,742 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -20 predicate places. [2022-12-13 11:55:58,742 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:55:58,742 INFO L89 Accepts]: Start accepts. Operand has 76 places, 95 transitions, 808 flow [2022-12-13 11:55:58,743 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:55:58,743 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:55:58,743 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 95 transitions, 808 flow [2022-12-13 11:55:58,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 95 transitions, 808 flow [2022-12-13 11:55:59,975 INFO L130 PetriNetUnfolder]: 11980/20789 cut-off events. [2022-12-13 11:55:59,975 INFO L131 PetriNetUnfolder]: For 15210/16037 co-relation queries the response was YES. [2022-12-13 11:56:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46053 conditions, 20789 events. 11980/20789 cut-off events. For 15210/16037 co-relation queries the response was YES. Maximal size of possible extension queue 2515. Compared 203783 event pairs, 6636 based on Foata normal form. 21/10260 useless extension candidates. Maximal degree in co-relation 46027. Up to 17008 conditions per place. [2022-12-13 11:56:00,200 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 95 transitions, 808 flow [2022-12-13 11:56:00,200 INFO L226 LiptonReduction]: Number of co-enabled transitions 2850 [2022-12-13 11:56:00,596 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:00,597 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1855 [2022-12-13 11:56:00,597 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 808 flow [2022-12-13 11:56:00,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 11:56:00,597 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:00,598 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:00,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:56:00,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1044423463, now seen corresponding path program 1 times [2022-12-13 11:56:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:00,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585225584] [2022-12-13 11:56:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:00,798 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 11:56:00,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585225584] [2022-12-13 11:56:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585225584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:00,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696187781] [2022-12-13 11:56:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:00,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:56:00,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:56:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:56:00,800 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:56:00,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 11:56:00,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:00,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:56:00,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:12,441 INFO L130 PetriNetUnfolder]: 109908/155013 cut-off events. [2022-12-13 11:56:12,441 INFO L131 PetriNetUnfolder]: For 360764/365244 co-relation queries the response was YES. [2022-12-13 11:56:13,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508340 conditions, 155013 events. 109908/155013 cut-off events. For 360764/365244 co-relation queries the response was YES. Maximal size of possible extension queue 6859. Compared 1181923 event pairs, 37010 based on Foata normal form. 1508/122308 useless extension candidates. Maximal degree in co-relation 508311. Up to 90383 conditions per place. [2022-12-13 11:56:13,518 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 118 selfloop transitions, 37 changer transitions 3/173 dead transitions. [2022-12-13 11:56:13,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 173 transitions, 1597 flow [2022-12-13 11:56:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:56:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:56:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2022-12-13 11:56:13,519 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2022-12-13 11:56:13,519 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 808 flow. Second operand 4 states and 131 transitions. [2022-12-13 11:56:13,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 173 transitions, 1597 flow [2022-12-13 11:56:13,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 173 transitions, 1568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:56:13,811 INFO L231 Difference]: Finished difference. Result has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:13,811 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1185, PETRI_PLACES=81, PETRI_TRANSITIONS=110} [2022-12-13 11:56:13,813 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -15 predicate places. [2022-12-13 11:56:13,814 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:13,814 INFO L89 Accepts]: Start accepts. Operand has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:13,815 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:13,816 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:13,816 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:13,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:15,707 INFO L130 PetriNetUnfolder]: 20193/32871 cut-off events. [2022-12-13 11:56:15,708 INFO L131 PetriNetUnfolder]: For 19620/21052 co-relation queries the response was YES. [2022-12-13 11:56:15,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70372 conditions, 32871 events. 20193/32871 cut-off events. For 19620/21052 co-relation queries the response was YES. Maximal size of possible extension queue 4080. Compared 315858 event pairs, 11584 based on Foata normal form. 25/14557 useless extension candidates. Maximal degree in co-relation 70342. Up to 29422 conditions per place. [2022-12-13 11:56:16,067 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:16,068 INFO L226 LiptonReduction]: Number of co-enabled transitions 3450 [2022-12-13 11:56:16,767 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:16,768 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2954 [2022-12-13 11:56:16,768 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 110 transitions, 1185 flow [2022-12-13 11:56:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 11:56:16,768 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:16,768 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:56:16,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1197853239, now seen corresponding path program 1 times [2022-12-13 11:56:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:16,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175736205] [2022-12-13 11:56:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:16,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175736205] [2022-12-13 11:56:16,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175736205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:16,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:16,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:56:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197181405] [2022-12-13 11:56:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:16,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:56:16,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:56:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:56:16,892 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2022-12-13 11:56:16,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 110 transitions, 1185 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:56:16,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:16,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2022-12-13 11:56:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:25,069 INFO L130 PetriNetUnfolder]: 71572/105003 cut-off events. [2022-12-13 11:56:25,069 INFO L131 PetriNetUnfolder]: For 305458/308476 co-relation queries the response was YES. [2022-12-13 11:56:25,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352936 conditions, 105003 events. 71572/105003 cut-off events. For 305458/308476 co-relation queries the response was YES. Maximal size of possible extension queue 4734. Compared 814044 event pairs, 11438 based on Foata normal form. 4303/73992 useless extension candidates. Maximal degree in co-relation 352903. Up to 90406 conditions per place. [2022-12-13 11:56:25,670 INFO L137 encePairwiseOnDemand]: 29/43 looper letters, 142 selfloop transitions, 25 changer transitions 5/204 dead transitions. [2022-12-13 11:56:25,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 204 transitions, 2544 flow [2022-12-13 11:56:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:56:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:56:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2022-12-13 11:56:25,672 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2022-12-13 11:56:25,672 INFO L175 Difference]: Start difference. First operand has 81 places, 110 transitions, 1185 flow. Second operand 4 states and 128 transitions. [2022-12-13 11:56:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 204 transitions, 2544 flow [2022-12-13 11:56:25,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 204 transitions, 2522 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-12-13 11:56:25,758 INFO L231 Difference]: Finished difference. Result has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:25,758 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1307, PETRI_PLACES=85, PETRI_TRANSITIONS=121} [2022-12-13 11:56:25,759 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -11 predicate places. [2022-12-13 11:56:25,759 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:56:25,759 INFO L89 Accepts]: Start accepts. Operand has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:25,760 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:56:25,760 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:56:25,760 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:25,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:27,476 INFO L130 PetriNetUnfolder]: 15242/27155 cut-off events. [2022-12-13 11:56:27,477 INFO L131 PetriNetUnfolder]: For 19044/30312 co-relation queries the response was YES. [2022-12-13 11:56:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83255 conditions, 27155 events. 15242/27155 cut-off events. For 19044/30312 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 278135 event pairs, 4303 based on Foata normal form. 101/13347 useless extension candidates. Maximal degree in co-relation 83222. Up to 23158 conditions per place. [2022-12-13 11:56:27,750 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:27,751 INFO L226 LiptonReduction]: Number of co-enabled transitions 4102 [2022-12-13 11:56:28,260 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:56:28,260 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2501 [2022-12-13 11:56:28,261 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 121 transitions, 1307 flow [2022-12-13 11:56:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:56:28,261 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:28,261 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:56:28,261 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:56:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1799132624, now seen corresponding path program 1 times [2022-12-13 11:56:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:28,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767401353] [2022-12-13 11:56:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,387 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 11:56:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767401353] [2022-12-13 11:56:28,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767401353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:28,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:28,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:56:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432079561] [2022-12-13 11:56:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:28,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:56:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:56:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:56:28,388 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2022-12-13 11:56:28,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 1307 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 11:56:28,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:28,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2022-12-13 11:56:28,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand