/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 09:21:21,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:21:21,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:21:21,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:21:21,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:21:21,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:21:21,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:21:21,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:21:21,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:21:21,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:21:21,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:21:21,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:21:21,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:21:21,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:21:21,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:21:21,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:21:21,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:21:21,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:21:21,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:21:21,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:21:21,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:21:21,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:21:21,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:21:21,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:21:21,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:21:21,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:21:21,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:21:21,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:21:21,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:21:21,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:21:21,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:21:21,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:21:21,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:21:21,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:21:21,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:21:21,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:21:22,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:21:22,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:21:22,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:21:22,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:21:22,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:21:22,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 09:21:22,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:21:22,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:21:22,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:21:22,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:21:22,029 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:21:22,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:21:22,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:21:22,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:21:22,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:21:22,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:21:22,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:21:22,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:21:22,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:21:22,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 09:21:22,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 09:21:22,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:21:22,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:21:22,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:21:22,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:21:22,311 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:21:22,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:21:23,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:21:23,507 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:21:23,509 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:21:23,524 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a140362/e25384be853e4274a47dd799c08115c0/FLAG7a62e60cc [2022-12-13 09:21:23,536 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7a140362/e25384be853e4274a47dd799c08115c0 [2022-12-13 09:21:23,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:21:23,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 09:21:23,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:21:23,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:21:23,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:21:23,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:21:23" (1/1) ... [2022-12-13 09:21:23,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82508ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:23, skipping insertion in model container [2022-12-13 09:21:23,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:21:23" (1/1) ... [2022-12-13 09:21:23,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:21:23,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:21:23,715 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 09:21:23,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,891 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:21:23,938 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:21:23,947 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/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 09:21:23,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,974 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,976 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,977 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,978 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,979 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,984 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:23,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:23,985 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:24,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:24,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:24,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:24,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:24,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:21:24,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:21:24,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:21:24,039 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:21:24,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24 WrapperNode [2022-12-13 09:21:24,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:21:24,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:21:24,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:21:24,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:21:24,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,085 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-12-13 09:21:24,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:21:24,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:21:24,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:21:24,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:21:24,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:21:24,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:21:24,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:21:24,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:21:24,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (1/1) ... [2022-12-13 09:21:24,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:21:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 09:21:24,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:21:24,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:21:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 09:21:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 09:21:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 09:21:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 09:21:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 09:21:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 09:21:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 09:21:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:21:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 09:21:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:21:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:21:24,217 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 09:21:24,376 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 09:21:24,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:21:24,600 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 09:21:24,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:21:24,671 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 09:21:24,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:21:24 BoogieIcfgContainer [2022-12-13 09:21:24,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:21:24,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:21:24,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:21:24,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:21:24,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:21:23" (1/3) ... [2022-12-13 09:21:24,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db5a91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:21:24, skipping insertion in model container [2022-12-13 09:21:24,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:21:24" (2/3) ... [2022-12-13 09:21:24,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db5a91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:21:24, skipping insertion in model container [2022-12-13 09:21:24,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:21:24" (3/3) ... [2022-12-13 09:21:24,700 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:21:24,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:21:24,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 09:21:24,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:21:24,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 09:21:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 09:21:24,894 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 09:21:24,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:21:24,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 09:21:24,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 09:21:24,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-13 09:21:24,909 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:24,923 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 09:21:24,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-13 09:21:24,947 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 09:21:24,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:21:24,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 09:21:24,952 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 09:21:24,952 INFO L226 LiptonReduction]: Number of co-enabled transitions 3164 [2022-12-13 09:21:29,440 INFO L241 LiptonReduction]: Total number of compositions: 99 [2022-12-13 09:21:29,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 09:21:29,461 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;@1df01e39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:21:29,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 09:21:29,467 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 09:21:29,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:21:29,467 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:29,468 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 09:21:29,468 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 09:21:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash 568663, now seen corresponding path program 1 times [2022-12-13 09:21:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339418633] [2022-12-13 09:21:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:29,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339418633] [2022-12-13 09:21:29,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339418633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:29,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:29,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:21:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457895631] [2022-12-13 09:21:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:29,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:21:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:29,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:21:29,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:21:29,795 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 83 [2022-12-13 09:21:29,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:21:29,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:29,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 83 [2022-12-13 09:21:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:36,711 INFO L130 PetriNetUnfolder]: 66790/97374 cut-off events. [2022-12-13 09:21:36,711 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-13 09:21:36,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185663 conditions, 97374 events. 66790/97374 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 4514. Compared 790516 event pairs, 9970 based on Foata normal form. 0/63342 useless extension candidates. Maximal degree in co-relation 185651. Up to 73765 conditions per place. [2022-12-13 09:21:37,017 INFO L137 encePairwiseOnDemand]: 78/83 looper letters, 48 selfloop transitions, 2 changer transitions 71/137 dead transitions. [2022-12-13 09:21:37,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 137 transitions, 535 flow [2022-12-13 09:21:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:21:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:21:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2022-12-13 09:21:37,026 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7068273092369478 [2022-12-13 09:21:37,027 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 178 flow. Second operand 3 states and 176 transitions. [2022-12-13 09:21:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 137 transitions, 535 flow [2022-12-13 09:21:37,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 137 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 09:21:37,033 INFO L231 Difference]: Finished difference. Result has 91 places, 44 transitions, 100 flow [2022-12-13 09:21:37,034 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=91, PETRI_TRANSITIONS=44} [2022-12-13 09:21:37,037 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2022-12-13 09:21:37,038 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:37,038 INFO L89 Accepts]: Start accepts. Operand has 91 places, 44 transitions, 100 flow [2022-12-13 09:21:37,042 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:37,042 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:37,042 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 44 transitions, 100 flow [2022-12-13 09:21:37,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 44 transitions, 100 flow [2022-12-13 09:21:37,048 INFO L130 PetriNetUnfolder]: 0/44 cut-off events. [2022-12-13 09:21:37,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:21:37,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 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 09:21:37,051 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 44 transitions, 100 flow [2022-12-13 09:21:37,051 INFO L226 LiptonReduction]: Number of co-enabled transitions 1158 [2022-12-13 09:21:37,246 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:37,248 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 210 [2022-12-13 09:21:37,250 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 100 flow [2022-12-13 09:21:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:21:37,250 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:37,250 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:21:37,251 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 09:21:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 486257866, now seen corresponding path program 1 times [2022-12-13 09:21:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564446955] [2022-12-13 09:21:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:37,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564446955] [2022-12-13 09:21:37,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564446955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:37,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:37,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:21:37,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994347271] [2022-12-13 09:21:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:21:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:21:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:21:37,692 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 09:21:37,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:21:37,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:37,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 09:21:37,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:41,409 INFO L130 PetriNetUnfolder]: 44491/61962 cut-off events. [2022-12-13 09:21:41,410 INFO L131 PetriNetUnfolder]: For 2183/2183 co-relation queries the response was YES. [2022-12-13 09:21:41,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124336 conditions, 61962 events. 44491/61962 cut-off events. For 2183/2183 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 399343 event pairs, 15715 based on Foata normal form. 0/50732 useless extension candidates. Maximal degree in co-relation 124326. Up to 34025 conditions per place. [2022-12-13 09:21:41,667 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 51 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2022-12-13 09:21:41,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 284 flow [2022-12-13 09:21:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:21:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:21:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2022-12-13 09:21:41,671 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2022-12-13 09:21:41,671 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 100 flow. Second operand 3 states and 95 transitions. [2022-12-13 09:21:41,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 284 flow [2022-12-13 09:21:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 09:21:41,674 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 156 flow [2022-12-13 09:21:41,674 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2022-12-13 09:21:41,675 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -38 predicate places. [2022-12-13 09:21:41,675 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:41,675 INFO L89 Accepts]: Start accepts. Operand has 57 places, 50 transitions, 156 flow [2022-12-13 09:21:41,677 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:41,677 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:41,677 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 50 transitions, 156 flow [2022-12-13 09:21:41,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 50 transitions, 156 flow [2022-12-13 09:21:41,719 INFO L130 PetriNetUnfolder]: 276/942 cut-off events. [2022-12-13 09:21:41,720 INFO L131 PetriNetUnfolder]: For 86/114 co-relation queries the response was YES. [2022-12-13 09:21:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 942 events. 276/942 cut-off events. For 86/114 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7832 event pairs, 120 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 1593. Up to 325 conditions per place. [2022-12-13 09:21:41,727 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 50 transitions, 156 flow [2022-12-13 09:21:41,727 INFO L226 LiptonReduction]: Number of co-enabled transitions 1362 [2022-12-13 09:21:41,782 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:41,783 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 108 [2022-12-13 09:21:41,783 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 156 flow [2022-12-13 09:21:41,784 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 09:21:41,784 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:41,784 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:41,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:21:41,787 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 09:21:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2105877137, now seen corresponding path program 1 times [2022-12-13 09:21:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:41,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468826323] [2022-12-13 09:21:41,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468826323] [2022-12-13 09:21:41,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468826323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:41,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:41,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:21:41,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604718829] [2022-12-13 09:21:41,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:41,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:21:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:41,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:21:41,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:21:41,962 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:21:41,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 156 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 09:21:41,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:41,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:21:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:45,135 INFO L130 PetriNetUnfolder]: 34547/48838 cut-off events. [2022-12-13 09:21:45,135 INFO L131 PetriNetUnfolder]: For 16772/16772 co-relation queries the response was YES. [2022-12-13 09:21:45,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115390 conditions, 48838 events. 34547/48838 cut-off events. For 16772/16772 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 322139 event pairs, 2259 based on Foata normal form. 72/41084 useless extension candidates. Maximal degree in co-relation 115378. Up to 25945 conditions per place. [2022-12-13 09:21:45,390 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 71 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2022-12-13 09:21:45,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 452 flow [2022-12-13 09:21:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:21:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:21:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2022-12-13 09:21:45,392 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2022-12-13 09:21:45,392 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 156 flow. Second operand 4 states and 122 transitions. [2022-12-13 09:21:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 452 flow [2022-12-13 09:21:45,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 424 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 09:21:45,470 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,470 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2022-12-13 09:21:45,470 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -35 predicate places. [2022-12-13 09:21:45,471 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:45,471 INFO L89 Accepts]: Start accepts. Operand has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,471 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:45,471 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:45,471 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,512 INFO L130 PetriNetUnfolder]: 231/810 cut-off events. [2022-12-13 09:21:45,512 INFO L131 PetriNetUnfolder]: For 376/489 co-relation queries the response was YES. [2022-12-13 09:21:45,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 810 events. 231/810 cut-off events. For 376/489 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6500 event pairs, 79 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 1613. Up to 278 conditions per place. [2022-12-13 09:21:45,520 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,520 INFO L226 LiptonReduction]: Number of co-enabled transitions 1592 [2022-12-13 09:21:45,539 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:45,540 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 69 [2022-12-13 09:21:45,540 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 234 flow [2022-12-13 09:21:45,540 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 09:21:45,540 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:45,541 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:45,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 09:21:45,541 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 09:21:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2105874409, now seen corresponding path program 1 times [2022-12-13 09:21:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:45,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669016075] [2022-12-13 09:21:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:45,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669016075] [2022-12-13 09:21:45,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669016075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:45,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:45,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:21:45,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261169037] [2022-12-13 09:21:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:45,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:21:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:21:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:21:45,628 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:21:45,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 234 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 09:21:45,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:45,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:21:45,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:48,963 INFO L130 PetriNetUnfolder]: 33954/48117 cut-off events. [2022-12-13 09:21:48,964 INFO L131 PetriNetUnfolder]: For 35397/35397 co-relation queries the response was YES. [2022-12-13 09:21:49,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121874 conditions, 48117 events. 33954/48117 cut-off events. For 35397/35397 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 313046 event pairs, 6979 based on Foata normal form. 70/40468 useless extension candidates. Maximal degree in co-relation 121859. Up to 25468 conditions per place. [2022-12-13 09:21:49,181 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 75 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2022-12-13 09:21:49,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 566 flow [2022-12-13 09:21:49,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:21:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:21:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2022-12-13 09:21:49,183 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2022-12-13 09:21:49,183 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 234 flow. Second operand 4 states and 126 transitions. [2022-12-13 09:21:49,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 566 flow [2022-12-13 09:21:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 105 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 09:21:49,261 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,262 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2022-12-13 09:21:49,263 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -30 predicate places. [2022-12-13 09:21:49,263 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:49,263 INFO L89 Accepts]: Start accepts. Operand has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,264 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:49,265 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:49,265 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,304 INFO L130 PetriNetUnfolder]: 205/736 cut-off events. [2022-12-13 09:21:49,304 INFO L131 PetriNetUnfolder]: For 846/1079 co-relation queries the response was YES. [2022-12-13 09:21:49,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 736 events. 205/736 cut-off events. For 846/1079 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5850 event pairs, 55 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 1781. Up to 246 conditions per place. [2022-12-13 09:21:49,311 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,311 INFO L226 LiptonReduction]: Number of co-enabled transitions 1750 [2022-12-13 09:21:49,319 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:49,320 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 57 [2022-12-13 09:21:49,320 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 346 flow [2022-12-13 09:21:49,320 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 09:21:49,320 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:49,320 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:49,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 09:21:49,320 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 09:21:49,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:49,321 INFO L85 PathProgramCache]: Analyzing trace with hash -857680878, now seen corresponding path program 1 times [2022-12-13 09:21:49,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:49,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814151760] [2022-12-13 09:21:49,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:49,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:49,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:49,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814151760] [2022-12-13 09:21:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814151760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:49,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:49,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:21:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698376112] [2022-12-13 09:21:49,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:21:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:21:49,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:21:49,416 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:21:49,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 346 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 09:21:49,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:49,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:21:49,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:52,848 INFO L130 PetriNetUnfolder]: 32108/45062 cut-off events. [2022-12-13 09:21:52,849 INFO L131 PetriNetUnfolder]: For 66780/66780 co-relation queries the response was YES. [2022-12-13 09:21:52,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126392 conditions, 45062 events. 32108/45062 cut-off events. For 66780/66780 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 274572 event pairs, 7565 based on Foata normal form. 340/38037 useless extension candidates. Maximal degree in co-relation 126373. Up to 19026 conditions per place. [2022-12-13 09:21:53,085 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 80 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2022-12-13 09:21:53,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 748 flow [2022-12-13 09:21:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:21:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:21:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2022-12-13 09:21:53,086 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6686046511627907 [2022-12-13 09:21:53,087 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 346 flow. Second operand 4 states and 115 transitions. [2022-12-13 09:21:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 748 flow [2022-12-13 09:21:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 748 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 09:21:53,194 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,195 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2022-12-13 09:21:53,195 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -24 predicate places. [2022-12-13 09:21:53,195 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:53,195 INFO L89 Accepts]: Start accepts. Operand has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,196 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:53,196 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:53,196 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,230 INFO L130 PetriNetUnfolder]: 173/636 cut-off events. [2022-12-13 09:21:53,230 INFO L131 PetriNetUnfolder]: For 1450/1742 co-relation queries the response was YES. [2022-12-13 09:21:53,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 636 events. 173/636 cut-off events. For 1450/1742 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4775 event pairs, 36 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1843. Up to 210 conditions per place. [2022-12-13 09:21:53,237 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,237 INFO L226 LiptonReduction]: Number of co-enabled transitions 1946 [2022-12-13 09:21:53,283 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:53,284 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 89 [2022-12-13 09:21:53,284 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 547 flow [2022-12-13 09:21:53,285 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 09:21:53,285 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:53,285 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:53,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 09:21:53,285 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 09:21:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1590062309, now seen corresponding path program 1 times [2022-12-13 09:21:53,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:53,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424822647] [2022-12-13 09:21:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:53,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:53,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424822647] [2022-12-13 09:21:53,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424822647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:53,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:53,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:21:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194814147] [2022-12-13 09:21:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:53,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:21:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:21:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:21:53,367 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:21:53,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 547 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 09:21:53,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:53,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:21:53,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:21:58,296 INFO L130 PetriNetUnfolder]: 46024/65608 cut-off events. [2022-12-13 09:21:58,297 INFO L131 PetriNetUnfolder]: For 145330/145330 co-relation queries the response was YES. [2022-12-13 09:21:58,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188385 conditions, 65608 events. 46024/65608 cut-off events. For 145330/145330 co-relation queries the response was YES. Maximal size of possible extension queue 2232. Compared 447613 event pairs, 8709 based on Foata normal form. 720/54743 useless extension candidates. Maximal degree in co-relation 188361. Up to 28828 conditions per place. [2022-12-13 09:21:58,626 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 78 selfloop transitions, 31 changer transitions 4/124 dead transitions. [2022-12-13 09:21:58,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 963 flow [2022-12-13 09:21:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:21:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:21:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2022-12-13 09:21:58,627 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 09:21:58,627 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 547 flow. Second operand 4 states and 129 transitions. [2022-12-13 09:21:58,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 963 flow [2022-12-13 09:21:58,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 956 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 09:21:58,937 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:58,937 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2022-12-13 09:21:58,937 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -19 predicate places. [2022-12-13 09:21:58,938 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:21:58,938 INFO L89 Accepts]: Start accepts. Operand has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:58,938 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:21:58,938 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:21:58,939 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:58,979 INFO L130 PetriNetUnfolder]: 160/710 cut-off events. [2022-12-13 09:21:58,979 INFO L131 PetriNetUnfolder]: For 2215/2561 co-relation queries the response was YES. [2022-12-13 09:21:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 710 events. 160/710 cut-off events. For 2215/2561 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5773 event pairs, 40 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 2234. Up to 214 conditions per place. [2022-12-13 09:21:58,986 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:58,986 INFO L226 LiptonReduction]: Number of co-enabled transitions 2024 [2022-12-13 09:21:59,033 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:21:59,034 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 96 [2022-12-13 09:21:59,034 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 722 flow [2022-12-13 09:21:59,034 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 09:21:59,034 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:21:59,034 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:21:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 09:21:59,034 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 09:21:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:21:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1239281443, now seen corresponding path program 1 times [2022-12-13 09:21:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:21:59,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683117916] [2022-12-13 09:21:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:21:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:21:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:21:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:21:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:21:59,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683117916] [2022-12-13 09:21:59,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683117916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:21:59,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:21:59,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:21:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856107755] [2022-12-13 09:21:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:21:59,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:21:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:21:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:21:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:21:59,149 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:21:59,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 722 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:21:59,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:21:59,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:21:59,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:22:06,742 INFO L130 PetriNetUnfolder]: 77319/108671 cut-off events. [2022-12-13 09:22:06,742 INFO L131 PetriNetUnfolder]: For 205793/210385 co-relation queries the response was YES. [2022-12-13 09:22:07,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284764 conditions, 108671 events. 77319/108671 cut-off events. For 205793/210385 co-relation queries the response was YES. Maximal size of possible extension queue 4667. Compared 780609 event pairs, 22268 based on Foata normal form. 7936/77851 useless extension candidates. Maximal degree in co-relation 284736. Up to 84385 conditions per place. [2022-12-13 09:22:07,426 INFO L137 encePairwiseOnDemand]: 28/43 looper letters, 122 selfloop transitions, 26 changer transitions 10/189 dead transitions. [2022-12-13 09:22:07,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 189 transitions, 1877 flow [2022-12-13 09:22:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:22:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:22:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2022-12-13 09:22:07,427 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7395348837209302 [2022-12-13 09:22:07,427 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 722 flow. Second operand 5 states and 159 transitions. [2022-12-13 09:22:07,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 189 transitions, 1877 flow [2022-12-13 09:22:07,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 189 transitions, 1869 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 09:22:07,479 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 915 flow [2022-12-13 09:22:07,479 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=915, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2022-12-13 09:22:07,479 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -12 predicate places. [2022-12-13 09:22:07,479 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:22:07,480 INFO L89 Accepts]: Start accepts. Operand has 83 places, 103 transitions, 915 flow [2022-12-13 09:22:07,480 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:22:07,480 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:22:07,481 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 103 transitions, 915 flow [2022-12-13 09:22:07,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 103 transitions, 915 flow [2022-12-13 09:22:09,321 INFO L130 PetriNetUnfolder]: 20574/31646 cut-off events. [2022-12-13 09:22:09,321 INFO L131 PetriNetUnfolder]: For 20119/28687 co-relation queries the response was YES. [2022-12-13 09:22:09,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95991 conditions, 31646 events. 20574/31646 cut-off events. For 20119/28687 co-relation queries the response was YES. Maximal size of possible extension queue 4140. Compared 285839 event pairs, 11640 based on Foata normal form. 54/13669 useless extension candidates. Maximal degree in co-relation 95961. Up to 27350 conditions per place. [2022-12-13 09:22:09,688 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 103 transitions, 915 flow [2022-12-13 09:22:09,688 INFO L226 LiptonReduction]: Number of co-enabled transitions 3386 [2022-12-13 09:22:37,716 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:22:37,717 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 30238 [2022-12-13 09:22:37,717 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 909 flow [2022-12-13 09:22:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:22:37,718 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:22:37,718 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:22:37,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 09:22:37,718 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 09:22:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:22:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 798453691, now seen corresponding path program 1 times [2022-12-13 09:22:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:22:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742135203] [2022-12-13 09:22:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:22:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:22:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:22:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:22:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:22:37,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742135203] [2022-12-13 09:22:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742135203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:22:37,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:22:37,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:22:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749994114] [2022-12-13 09:22:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:22:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:22:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:22:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:22:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:22:37,863 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2022-12-13 09:22:37,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:22:37,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:22:37,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2022-12-13 09:22:37,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:22:50,133 INFO L130 PetriNetUnfolder]: 99830/141127 cut-off events. [2022-12-13 09:22:50,134 INFO L131 PetriNetUnfolder]: For 356356/369063 co-relation queries the response was YES. [2022-12-13 09:22:50,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535523 conditions, 141127 events. 99830/141127 cut-off events. For 356356/369063 co-relation queries the response was YES. Maximal size of possible extension queue 6907. Compared 1082230 event pairs, 21748 based on Foata normal form. 2918/113494 useless extension candidates. Maximal degree in co-relation 535490. Up to 84735 conditions per place. [2022-12-13 09:22:51,024 INFO L137 encePairwiseOnDemand]: 40/43 looper letters, 117 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2022-12-13 09:22:51,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 152 transitions, 1538 flow [2022-12-13 09:22:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:22:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:22:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 09:22:51,030 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2022-12-13 09:22:51,030 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 909 flow. Second operand 4 states and 116 transitions. [2022-12-13 09:22:51,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 152 transitions, 1538 flow [2022-12-13 09:22:56,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 152 transitions, 1505 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 09:22:56,860 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 868 flow [2022-12-13 09:22:56,861 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=868, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2022-12-13 09:22:56,863 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -11 predicate places. [2022-12-13 09:22:56,863 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:22:56,863 INFO L89 Accepts]: Start accepts. Operand has 84 places, 92 transitions, 868 flow [2022-12-13 09:22:56,870 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:22:56,870 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:22:56,870 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 92 transitions, 868 flow [2022-12-13 09:22:56,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 92 transitions, 868 flow [2022-12-13 09:22:59,711 INFO L130 PetriNetUnfolder]: 29019/43815 cut-off events. [2022-12-13 09:22:59,711 INFO L131 PetriNetUnfolder]: For 28721/43927 co-relation queries the response was YES. [2022-12-13 09:22:59,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128809 conditions, 43815 events. 29019/43815 cut-off events. For 28721/43927 co-relation queries the response was YES. Maximal size of possible extension queue 5736. Compared 398470 event pairs, 17658 based on Foata normal form. 56/19557 useless extension candidates. Maximal degree in co-relation 128778. Up to 37762 conditions per place. [2022-12-13 09:23:00,102 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 92 transitions, 868 flow [2022-12-13 09:23:00,102 INFO L226 LiptonReduction]: Number of co-enabled transitions 2670 [2022-12-13 09:23:00,603 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [460] $Ultimate##0-->L821: Formula: (and (= v_~z~0_9 1) (= |v_P3Thread1of1ForFork0_#in~arg.base_5| v_P3Thread1of1ForFork0_~arg.base_5) (= v_P3Thread1of1ForFork0_~arg.offset_5 |v_P3Thread1of1ForFork0_#in~arg.offset_5|)) InVars {P3Thread1of1ForFork0_#in~arg.offset=|v_P3Thread1of1ForFork0_#in~arg.offset_5|, P3Thread1of1ForFork0_#in~arg.base=|v_P3Thread1of1ForFork0_#in~arg.base_5|} OutVars{P3Thread1of1ForFork0_#in~arg.offset=|v_P3Thread1of1ForFork0_#in~arg.offset_5|, P3Thread1of1ForFork0_~arg.offset=v_P3Thread1of1ForFork0_~arg.offset_5, ~z~0=v_~z~0_9, P3Thread1of1ForFork0_#in~arg.base=|v_P3Thread1of1ForFork0_#in~arg.base_5|, P3Thread1of1ForFork0_~arg.base=v_P3Thread1of1ForFork0_~arg.base_5} AuxVars[] AssignedVars[P3Thread1of1ForFork0_~arg.offset, ~z~0, P3Thread1of1ForFork0_~arg.base] and [392] L801-->L804: Formula: (= v_~__unbuffered_p2_EAX~0_1 v_~z~0_1) InVars {~z~0=v_~z~0_1} OutVars{~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_1, ~z~0=v_~z~0_1} AuxVars[] AssignedVars[~__unbuffered_p2_EAX~0] [2022-12-13 09:23:02,205 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:23:02,213 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 5350 [2022-12-13 09:23:02,214 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 871 flow [2022-12-13 09:23:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:23:02,214 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:23:02,214 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 09:23:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 09:23:02,214 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 09:23:02,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:23:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -50712957, now seen corresponding path program 1 times [2022-12-13 09:23:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:23:02,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932441426] [2022-12-13 09:23:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:23:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:23:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:23:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:23:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:23:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932441426] [2022-12-13 09:23:02,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932441426] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:23:02,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:23:02,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:23:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715913982] [2022-12-13 09:23:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:23:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:23:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:23:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:23:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:23:02,355 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2022-12-13 09:23:02,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 871 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:23:02,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:23:02,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2022-12-13 09:23:02,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand