/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:45:27,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:45:27,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:45:27,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:45:27,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:45:27,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:45:27,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:45:27,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:45:27,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:45:27,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:45:27,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:45:27,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:45:27,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:45:27,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:45:27,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:45:27,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:45:27,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:45:27,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:45:27,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:45:27,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:45:27,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:45:27,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:45:27,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:45:27,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:45:27,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:45:27,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:45:27,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:45:27,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:45:27,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:45:27,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:45:27,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:45:27,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:45:27,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:45:27,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:45:27,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:45:27,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:45:27,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:45:27,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:45:27,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:45:27,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:45:27,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:45:27,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:45:27,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:45:27,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:45:27,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:45:27,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:45:27,714 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:45:27,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:45:27,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:45:27,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:45:27,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:45:27,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:45:27,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:45:27,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:45:27,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:45:27,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:45:27,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:45:27,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:45:27,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:45:27,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:45:28,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:45:28,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:45:28,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:45:28,066 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:45:28,067 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:45:28,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:45:29,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:45:29,404 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:45:29,404 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:45:29,432 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6fd6b9d/8d7099bd6ce2421f9dc5deb1f2e7925e/FLAG19e604115 [2022-12-13 11:45:29,448 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c6fd6b9d/8d7099bd6ce2421f9dc5deb1f2e7925e [2022-12-13 11:45:29,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:45:29,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:45:29,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:45:29,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:45:29,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:45:29,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:29,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204ac5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29, skipping insertion in model container [2022-12-13 11:45:29,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:29,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:45:29,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:45:29,667 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/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:45:29,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:45:29,898 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:45:29,911 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/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:45:29,927 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,934 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,938 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:45:29,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:45:29,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:45:29,984 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:45:29,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29 WrapperNode [2022-12-13 11:45:29,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:45:29,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:45:29,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:45:29,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:45:29,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,035 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-12-13 11:45:30,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:45:30,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:45:30,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:45:30,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:45:30,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:45:30,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:45:30,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:45:30,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:45:30,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (1/1) ... [2022-12-13 11:45:30,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:45:30,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:45:30,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:45:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:45:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:45:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:45:30,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:45:30,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:45:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:45:30,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:45:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:45:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:45:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:45:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:45:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:45:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:45:30,157 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:45:30,317 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:45:30,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:45:30,697 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:45:30,846 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:45:30,846 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:45:30,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:45:30 BoogieIcfgContainer [2022-12-13 11:45:30,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:45:30,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:45:30,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:45:30,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:45:30,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:45:29" (1/3) ... [2022-12-13 11:45:30,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:45:30, skipping insertion in model container [2022-12-13 11:45:30,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:29" (2/3) ... [2022-12-13 11:45:30,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:45:30, skipping insertion in model container [2022-12-13 11:45:30,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:45:30" (3/3) ... [2022-12-13 11:45:30,857 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:45:30,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:45:30,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:45:30,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:45:30,928 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:45:30,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 11:45:31,032 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 11:45:31,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:45:31,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 11:45:31,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 11:45:31,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2022-12-13 11:45:31,046 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:45:31,071 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 11:45:31,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2022-12-13 11:45:31,124 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 11:45:31,125 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:45:31,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 11:45:31,130 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 11:45:31,131 INFO L226 LiptonReduction]: Number of co-enabled transitions 3286 [2022-12-13 11:45:37,326 INFO L241 LiptonReduction]: Total number of compositions: 100 [2022-12-13 11:45:37,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:45:37,353 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;@4db8c94a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:45:37,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:45:37,359 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 11:45:37,359 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:45:37,359 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:37,360 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:45:37,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:45:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash 581121, now seen corresponding path program 1 times [2022-12-13 11:45:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:37,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672837406] [2022-12-13 11:45:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:37,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:37,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672837406] [2022-12-13 11:45:37,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672837406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:37,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:37,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:45:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892901962] [2022-12-13 11:45:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:37,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:45:37,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:45:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:45:37,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2022-12-13 11:45:37,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:37,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:45:37,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2022-12-13 11:45:37,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:45,580 INFO L130 PetriNetUnfolder]: 66790/97272 cut-off events. [2022-12-13 11:45:45,580 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-12-13 11:45:45,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185561 conditions, 97272 events. 66790/97272 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 4682. Compared 804224 event pairs, 9970 based on Foata normal form. 0/63181 useless extension candidates. Maximal degree in co-relation 185549. Up to 73765 conditions per place. [2022-12-13 11:45:45,912 INFO L137 encePairwiseOnDemand]: 79/83 looper letters, 48 selfloop transitions, 2 changer transitions 71/138 dead transitions. [2022-12-13 11:45:45,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 138 transitions, 537 flow [2022-12-13 11:45:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:45:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:45:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2022-12-13 11:45:45,922 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2022-12-13 11:45:45,924 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 178 flow. Second operand 3 states and 177 transitions. [2022-12-13 11:45:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 138 transitions, 537 flow [2022-12-13 11:45:45,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:45:45,930 INFO L231 Difference]: Finished difference. Result has 92 places, 45 transitions, 102 flow [2022-12-13 11:45:45,932 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=92, PETRI_TRANSITIONS=45} [2022-12-13 11:45:45,935 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -4 predicate places. [2022-12-13 11:45:45,935 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:45:45,936 INFO L89 Accepts]: Start accepts. Operand has 92 places, 45 transitions, 102 flow [2022-12-13 11:45:45,939 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:45:45,939 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:45:45,940 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 45 transitions, 102 flow [2022-12-13 11:45:45,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 45 transitions, 102 flow [2022-12-13 11:45:45,957 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-12-13 11:45:45,957 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:45:45,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 11:45:45,961 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 45 transitions, 102 flow [2022-12-13 11:45:45,961 INFO L226 LiptonReduction]: Number of co-enabled transitions 1218 [2022-12-13 11:45:46,186 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:45:46,189 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 254 [2022-12-13 11:45:46,189 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2022-12-13 11:45:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:46,189 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:46,189 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:45:46,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:45:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1169465557, now seen corresponding path program 1 times [2022-12-13 11:45:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:46,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511799737] [2022-12-13 11:45:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:46,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:46,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511799737] [2022-12-13 11:45:46,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511799737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:46,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:46,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:45:46,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150338547] [2022-12-13 11:45:46,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:45:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:45:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:45:46,465 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2022-12-13 11:45:46,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:46,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:45:46,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2022-12-13 11:45:46,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:51,185 INFO L130 PetriNetUnfolder]: 52491/72585 cut-off events. [2022-12-13 11:45:51,186 INFO L131 PetriNetUnfolder]: For 2553/2553 co-relation queries the response was YES. [2022-12-13 11:45:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145981 conditions, 72585 events. 52491/72585 cut-off events. For 2553/2553 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 463989 event pairs, 18503 based on Foata normal form. 0/59875 useless extension candidates. Maximal degree in co-relation 145971. Up to 40945 conditions per place. [2022-12-13 11:45:51,630 INFO L137 encePairwiseOnDemand]: 35/45 looper letters, 52 selfloop transitions, 9 changer transitions 2/74 dead transitions. [2022-12-13 11:45:51,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 292 flow [2022-12-13 11:45:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:45:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:45:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-13 11:45:51,636 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-12-13 11:45:51,636 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2022-12-13 11:45:51,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 292 flow [2022-12-13 11:45:51,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:45:51,640 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 166 flow [2022-12-13 11:45:51,641 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-12-13 11:45:51,642 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2022-12-13 11:45:51,642 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:45:51,642 INFO L89 Accepts]: Start accepts. Operand has 58 places, 52 transitions, 166 flow [2022-12-13 11:45:51,643 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:45:51,643 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:45:51,643 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 52 transitions, 166 flow [2022-12-13 11:45:51,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 166 flow [2022-12-13 11:45:51,723 INFO L130 PetriNetUnfolder]: 394/1264 cut-off events. [2022-12-13 11:45:51,723 INFO L131 PetriNetUnfolder]: For 116/144 co-relation queries the response was YES. [2022-12-13 11:45:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 1264 events. 394/1264 cut-off events. For 116/144 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10915 event pairs, 174 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 2169. Up to 461 conditions per place. [2022-12-13 11:45:51,737 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 52 transitions, 166 flow [2022-12-13 11:45:51,737 INFO L226 LiptonReduction]: Number of co-enabled transitions 1454 [2022-12-13 11:45:51,807 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:45:51,808 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 166 [2022-12-13 11:45:51,810 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 166 flow [2022-12-13 11:45:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:51,812 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:51,817 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:45:51,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:45:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1893693666, now seen corresponding path program 1 times [2022-12-13 11:45:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:51,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028986101] [2022-12-13 11:45:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028986101] [2022-12-13 11:45:52,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028986101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:52,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:52,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:45:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225268783] [2022-12-13 11:45:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:52,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:45:52,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:45:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:45:52,032 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:45:52,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:52,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:45:52,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:45:52,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:45:55,851 INFO L130 PetriNetUnfolder]: 40879/57480 cut-off events. [2022-12-13 11:45:55,852 INFO L131 PetriNetUnfolder]: For 20633/20633 co-relation queries the response was YES. [2022-12-13 11:45:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137972 conditions, 57480 events. 40879/57480 cut-off events. For 20633/20633 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 378567 event pairs, 2631 based on Foata normal form. 72/48734 useless extension candidates. Maximal degree in co-relation 137960. Up to 31493 conditions per place. [2022-12-13 11:45:56,206 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 72 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2022-12-13 11:45:56,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 466 flow [2022-12-13 11:45:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:45:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:45:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2022-12-13 11:45:56,208 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2022-12-13 11:45:56,208 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 166 flow. Second operand 4 states and 124 transitions. [2022-12-13 11:45:56,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 466 flow [2022-12-13 11:45:56,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:45:56,302 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,302 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2022-12-13 11:45:56,303 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -35 predicate places. [2022-12-13 11:45:56,303 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:45:56,303 INFO L89 Accepts]: Start accepts. Operand has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,305 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:45:56,305 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:45:56,305 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,375 INFO L130 PetriNetUnfolder]: 349/1116 cut-off events. [2022-12-13 11:45:56,375 INFO L131 PetriNetUnfolder]: For 513/626 co-relation queries the response was YES. [2022-12-13 11:45:56,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2285 conditions, 1116 events. 349/1116 cut-off events. For 513/626 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9287 event pairs, 127 based on Foata normal form. 0/819 useless extension candidates. Maximal degree in co-relation 2273. Up to 414 conditions per place. [2022-12-13 11:45:56,389 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,389 INFO L226 LiptonReduction]: Number of co-enabled transitions 1684 [2022-12-13 11:45:56,407 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:45:56,408 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 105 [2022-12-13 11:45:56,408 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 246 flow [2022-12-13 11:45:56,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:56,408 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:45:56,408 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:45:56,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:45:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1893691806, now seen corresponding path program 1 times [2022-12-13 11:45:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:56,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533560264] [2022-12-13 11:45:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:56,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533560264] [2022-12-13 11:45:56,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533560264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:56,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:56,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:45:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738145892] [2022-12-13 11:45:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:56,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:45:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:45:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:45:56,574 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:45:56,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:56,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:45:56,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:45:56,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:00,394 INFO L130 PetriNetUnfolder]: 40159/56791 cut-off events. [2022-12-13 11:46:00,395 INFO L131 PetriNetUnfolder]: For 44692/44692 co-relation queries the response was YES. [2022-12-13 11:46:00,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146114 conditions, 56791 events. 40159/56791 cut-off events. For 44692/44692 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 373058 event pairs, 8332 based on Foata normal form. 84/48177 useless extension candidates. Maximal degree in co-relation 146099. Up to 30754 conditions per place. [2022-12-13 11:46:00,730 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 77 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2022-12-13 11:46:00,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 588 flow [2022-12-13 11:46:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:46:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:46:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2022-12-13 11:46:00,731 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7329545454545454 [2022-12-13 11:46:00,732 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 246 flow. Second operand 4 states and 129 transitions. [2022-12-13 11:46:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 588 flow [2022-12-13 11:46:00,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:46:00,815 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,817 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2022-12-13 11:46:00,819 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -30 predicate places. [2022-12-13 11:46:00,819 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:46:00,819 INFO L89 Accepts]: Start accepts. Operand has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,821 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:46:00,821 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:46:00,821 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,905 INFO L130 PetriNetUnfolder]: 307/1004 cut-off events. [2022-12-13 11:46:00,905 INFO L131 PetriNetUnfolder]: For 1176/1429 co-relation queries the response was YES. [2022-12-13 11:46:00,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 1004 events. 307/1004 cut-off events. For 1176/1429 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8222 event pairs, 92 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 2495. Up to 363 conditions per place. [2022-12-13 11:46:00,921 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,921 INFO L226 LiptonReduction]: Number of co-enabled transitions 1842 [2022-12-13 11:46:00,930 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:46:00,935 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 116 [2022-12-13 11:46:00,935 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 361 flow [2022-12-13 11:46:00,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:00,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:00,935 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:46:00,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:46:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1425040591, now seen corresponding path program 1 times [2022-12-13 11:46:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:00,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546078294] [2022-12-13 11:46:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:01,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:01,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546078294] [2022-12-13 11:46:01,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546078294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:01,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:01,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:01,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870415915] [2022-12-13 11:46:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:01,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:46:01,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:01,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:46:01,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:46:01,085 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:46:01,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:01,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:01,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:46:01,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:04,704 INFO L130 PetriNetUnfolder]: 37919/53393 cut-off events. [2022-12-13 11:46:04,705 INFO L131 PetriNetUnfolder]: For 83831/83831 co-relation queries the response was YES. [2022-12-13 11:46:04,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152399 conditions, 53393 events. 37919/53393 cut-off events. For 83831/83831 co-relation queries the response was YES. Maximal size of possible extension queue 1698. Compared 335311 event pairs, 8777 based on Foata normal form. 408/45503 useless extension candidates. Maximal degree in co-relation 152380. Up to 22787 conditions per place. [2022-12-13 11:46:05,028 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 83 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2022-12-13 11:46:05,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 786 flow [2022-12-13 11:46:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:46:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:46:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2022-12-13 11:46:05,029 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6704545454545454 [2022-12-13 11:46:05,029 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 361 flow. Second operand 4 states and 118 transitions. [2022-12-13 11:46:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 786 flow [2022-12-13 11:46:05,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 113 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:46:05,129 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,129 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2022-12-13 11:46:05,130 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -24 predicate places. [2022-12-13 11:46:05,130 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:46:05,130 INFO L89 Accepts]: Start accepts. Operand has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,131 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:46:05,131 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:46:05,131 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,182 INFO L130 PetriNetUnfolder]: 255/860 cut-off events. [2022-12-13 11:46:05,182 INFO L131 PetriNetUnfolder]: For 1969/2216 co-relation queries the response was YES. [2022-12-13 11:46:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 860 events. 255/860 cut-off events. For 1969/2216 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6718 event pairs, 60 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2558. Up to 305 conditions per place. [2022-12-13 11:46:05,188 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,188 INFO L226 LiptonReduction]: Number of co-enabled transitions 2066 [2022-12-13 11:46:05,195 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:46:05,196 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 66 [2022-12-13 11:46:05,196 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 579 flow [2022-12-13 11:46:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:05,196 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:05,196 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:46:05,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:46:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash 401901833, now seen corresponding path program 1 times [2022-12-13 11:46:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:05,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071789358] [2022-12-13 11:46:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:05,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071789358] [2022-12-13 11:46:05,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071789358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:05,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:05,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963181428] [2022-12-13 11:46:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:05,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:46:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:05,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:46:05,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:46:05,310 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:46:05,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:05,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:05,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:46:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:11,483 INFO L130 PetriNetUnfolder]: 55091/78005 cut-off events. [2022-12-13 11:46:11,483 INFO L131 PetriNetUnfolder]: For 191786/191786 co-relation queries the response was YES. [2022-12-13 11:46:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231370 conditions, 78005 events. 55091/78005 cut-off events. For 191786/191786 co-relation queries the response was YES. Maximal size of possible extension queue 2489. Compared 532531 event pairs, 10503 based on Foata normal form. 840/65663 useless extension candidates. Maximal degree in co-relation 231346. Up to 34404 conditions per place. [2022-12-13 11:46:11,938 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 81 selfloop transitions, 33 changer transitions 5/130 dead transitions. [2022-12-13 11:46:11,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 130 transitions, 1039 flow [2022-12-13 11:46:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:46:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:46:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2022-12-13 11:46:11,939 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 11:46:11,939 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 579 flow. Second operand 4 states and 132 transitions. [2022-12-13 11:46:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 130 transitions, 1039 flow [2022-12-13 11:46:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 130 transitions, 1032 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:46:12,177 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,178 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=779, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2022-12-13 11:46:12,178 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -19 predicate places. [2022-12-13 11:46:12,178 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:46:12,178 INFO L89 Accepts]: Start accepts. Operand has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,179 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:46:12,179 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:46:12,180 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,249 INFO L130 PetriNetUnfolder]: 248/984 cut-off events. [2022-12-13 11:46:12,249 INFO L131 PetriNetUnfolder]: For 3009/3281 co-relation queries the response was YES. [2022-12-13 11:46:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3211 conditions, 984 events. 248/984 cut-off events. For 3009/3281 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8416 event pairs, 70 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 3186. Up to 326 conditions per place. [2022-12-13 11:46:12,259 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,259 INFO L226 LiptonReduction]: Number of co-enabled transitions 2170 [2022-12-13 11:46:12,275 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:46:12,276 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 98 [2022-12-13 11:46:12,276 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 779 flow [2022-12-13 11:46:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:12,276 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:12,276 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:12,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:46:12,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:46:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1968217259, now seen corresponding path program 1 times [2022-12-13 11:46:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181892569] [2022-12-13 11:46:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:12,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:12,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181892569] [2022-12-13 11:46:12,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181892569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:12,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:12,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:46:12,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753267091] [2022-12-13 11:46:12,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:12,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:12,416 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2022-12-13 11:46:12,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 779 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:12,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:12,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2022-12-13 11:46:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:17,118 INFO L130 PetriNetUnfolder]: 37924/56564 cut-off events. [2022-12-13 11:46:17,119 INFO L131 PetriNetUnfolder]: For 157486/159444 co-relation queries the response was YES. [2022-12-13 11:46:17,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163991 conditions, 56564 events. 37924/56564 cut-off events. For 157486/159444 co-relation queries the response was YES. Maximal size of possible extension queue 2361. Compared 425053 event pairs, 10531 based on Foata normal form. 874/45915 useless extension candidates. Maximal degree in co-relation 163963. Up to 40193 conditions per place. [2022-12-13 11:46:17,496 INFO L137 encePairwiseOnDemand]: 41/44 looper letters, 64 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2022-12-13 11:46:17,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 1038 flow [2022-12-13 11:46:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:46:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-12-13 11:46:17,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2022-12-13 11:46:17,504 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 779 flow. Second operand 3 states and 92 transitions. [2022-12-13 11:46:17,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 1038 flow [2022-12-13 11:46:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 1036 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 11:46:17,577 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,578 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-12-13 11:46:17,578 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -16 predicate places. [2022-12-13 11:46:17,578 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:46:17,578 INFO L89 Accepts]: Start accepts. Operand has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,580 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:46:17,580 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:46:17,580 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,654 INFO L130 PetriNetUnfolder]: 211/885 cut-off events. [2022-12-13 11:46:17,654 INFO L131 PetriNetUnfolder]: For 2753/3025 co-relation queries the response was YES. [2022-12-13 11:46:17,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 885 events. 211/885 cut-off events. For 2753/3025 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7448 event pairs, 54 based on Foata normal form. 1/632 useless extension candidates. Maximal degree in co-relation 2904. Up to 281 conditions per place. [2022-12-13 11:46:17,666 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,666 INFO L226 LiptonReduction]: Number of co-enabled transitions 2170 [2022-12-13 11:46:17,673 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:46:17,674 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 96 [2022-12-13 11:46:17,674 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 794 flow [2022-12-13 11:46:17,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:17,674 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:17,674 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:46:17,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:46:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 667849307, now seen corresponding path program 1 times [2022-12-13 11:46:17,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:17,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532632668] [2022-12-13 11:46:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:17,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:17,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532632668] [2022-12-13 11:46:17,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532632668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:17,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:17,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:17,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931740247] [2022-12-13 11:46:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:17,801 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 11:46:17,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:17,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:17,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 11:46:17,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:46:25,173 INFO L130 PetriNetUnfolder]: 67145/94658 cut-off events. [2022-12-13 11:46:25,173 INFO L131 PetriNetUnfolder]: For 179856/182853 co-relation queries the response was YES. [2022-12-13 11:46:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246359 conditions, 94658 events. 67145/94658 cut-off events. For 179856/182853 co-relation queries the response was YES. Maximal size of possible extension queue 3665. Compared 667569 event pairs, 21373 based on Foata normal form. 1516/63565 useless extension candidates. Maximal degree in co-relation 246328. Up to 91450 conditions per place. [2022-12-13 11:46:25,714 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 74 selfloop transitions, 13 changer transitions 0/122 dead transitions. [2022-12-13 11:46:25,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 1248 flow [2022-12-13 11:46:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:46:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2022-12-13 11:46:25,716 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2022-12-13 11:46:25,716 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 794 flow. Second operand 3 states and 96 transitions. [2022-12-13 11:46:25,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 1248 flow [2022-12-13 11:46:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 1238 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:46:25,763 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:25,764 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=873, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2022-12-13 11:46:25,764 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -15 predicate places. [2022-12-13 11:46:25,764 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:46:25,764 INFO L89 Accepts]: Start accepts. Operand has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:25,766 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:46:25,766 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:46:25,766 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:25,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:27,227 INFO L130 PetriNetUnfolder]: 12633/21725 cut-off events. [2022-12-13 11:46:27,227 INFO L131 PetriNetUnfolder]: For 16105/16615 co-relation queries the response was YES. [2022-12-13 11:46:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47830 conditions, 21725 events. 12633/21725 cut-off events. For 16105/16615 co-relation queries the response was YES. Maximal size of possible extension queue 2541. Compared 210483 event pairs, 7010 based on Foata normal form. 18/10510 useless extension candidates. Maximal degree in co-relation 47801. Up to 18175 conditions per place. [2022-12-13 11:46:27,420 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:27,421 INFO L226 LiptonReduction]: Number of co-enabled transitions 2834 [2022-12-13 11:46:27,847 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:46:27,848 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2084 [2022-12-13 11:46:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 873 flow [2022-12-13 11:46:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:27,848 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:46:27,848 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:27,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:46:27,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:46:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1886197124, now seen corresponding path program 1 times [2022-12-13 11:46:27,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:27,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861881582] [2022-12-13 11:46:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:27,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:28,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861881582] [2022-12-13 11:46:28,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861881582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:28,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:28,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378432948] [2022-12-13 11:46:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:28,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:46:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:28,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:46:28,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:46:28,074 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:46:28,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 873 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:28,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:46:28,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:46:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand