/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 00:33:26,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 00:33:26,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 00:33:26,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 00:33:26,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 00:33:26,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 00:33:26,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 00:33:26,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 00:33:26,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 00:33:26,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 00:33:26,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 00:33:26,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 00:33:26,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 00:33:26,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 00:33:26,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 00:33:26,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 00:33:26,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 00:33:26,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 00:33:26,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 00:33:26,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 00:33:26,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 00:33:26,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 00:33:26,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 00:33:26,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 00:33:26,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 00:33:26,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 00:33:26,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 00:33:26,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 00:33:26,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 00:33:26,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 00:33:26,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 00:33:26,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 00:33:26,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 00:33:26,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 00:33:26,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 00:33:26,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 00:33:26,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 00:33:26,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 00:33:26,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 00:33:26,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 00:33:26,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 00:33:26,696 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-RepeatedSemanticLbe.epf [2022-12-13 00:33:26,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 00:33:26,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 00:33:26,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 00:33:26,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 00:33:26,722 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 00:33:26,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 00:33:26,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 00:33:26,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 00:33:26,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 00:33:26,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 00:33:26,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 00:33:26,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 00:33:26,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:33:26,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 00:33:26,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 00:33:26,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 00:33:27,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 00:33:27,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 00:33:27,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 00:33:27,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 00:33:27,055 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 00:33:27,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2022-12-13 00:33:28,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 00:33:28,372 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 00:33:28,372 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2022-12-13 00:33:28,383 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a69067ee/8d716b2472f340e780e93a5df752b066/FLAGdf5469eae [2022-12-13 00:33:28,392 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a69067ee/8d716b2472f340e780e93a5df752b066 [2022-12-13 00:33:28,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 00:33:28,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 00:33:28,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 00:33:28,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 00:33:28,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 00:33:28,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5c47e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28, skipping insertion in model container [2022-12-13 00:33:28,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 00:33:28,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 00:33:28,606 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/mix005.opt.i[944,957] [2022-12-13 00:33:28,742 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,743 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,744 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,745 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,785 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:33:28,806 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 00:33:28,815 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/mix005.opt.i[944,957] [2022-12-13 00:33:28,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:33:28,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:33:28,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:33:28,909 INFO L208 MainTranslator]: Completed translation [2022-12-13 00:33:28,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28 WrapperNode [2022-12-13 00:33:28,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 00:33:28,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 00:33:28,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 00:33:28,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 00:33:28,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,975 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 164 [2022-12-13 00:33:28,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 00:33:28,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 00:33:28,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 00:33:28,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 00:33:28,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:28,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 00:33:29,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 00:33:29,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 00:33:29,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 00:33:29,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (1/1) ... [2022-12-13 00:33:29,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:33:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 00:33:29,039 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 00:33:29,063 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 00:33:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 00:33:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 00:33:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 00:33:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 00:33:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 00:33:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 00:33:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 00:33:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 00:33:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 00:33:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 00:33:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 00:33:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 00:33:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 00:33:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 00:33:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 00:33:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 00:33:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 00:33:29,096 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 00:33:29,235 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 00:33:29,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 00:33:29,460 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 00:33:29,556 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 00:33:29,556 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 00:33:29,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:29 BoogieIcfgContainer [2022-12-13 00:33:29,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 00:33:29,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 00:33:29,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 00:33:29,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 00:33:29,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:33:28" (1/3) ... [2022-12-13 00:33:29,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcbfa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:29, skipping insertion in model container [2022-12-13 00:33:29,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:28" (2/3) ... [2022-12-13 00:33:29,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcbfa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:29, skipping insertion in model container [2022-12-13 00:33:29,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:29" (3/3) ... [2022-12-13 00:33:29,565 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2022-12-13 00:33:29,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 00:33:29,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 00:33:29,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 00:33:29,639 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 00:33:29,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 00:33:29,737 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 00:33:29,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:33:29,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 00:33:29,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 00:33:29,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-13 00:33:29,751 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:29,768 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 00:33:29,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-13 00:33:29,792 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 00:33:29,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:33:29,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 00:33:29,797 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 00:33:29,797 INFO L226 LiptonReduction]: Number of co-enabled transitions 2836 [2022-12-13 00:33:34,280 INFO L241 LiptonReduction]: Total number of compositions: 100 [2022-12-13 00:33:34,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 00:33:34,294 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;@5856a8ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 00:33:34,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 00:33:34,299 INFO L130 PetriNetUnfolder]: 0/27 cut-off events. [2022-12-13 00:33:34,299 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:33:34,299 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:34,299 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:34,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 231809873, now seen corresponding path program 1 times [2022-12-13 00:33:34,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:34,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150783315] [2022-12-13 00:33:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:34,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:34,609 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 00:33:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150783315] [2022-12-13 00:33:34,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150783315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:34,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:34,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:33:34,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495421656] [2022-12-13 00:33:34,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:33:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:33:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:33:34,632 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 67 [2022-12-13 00:33:34,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:33:34,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:34,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 67 [2022-12-13 00:33:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:38,788 INFO L130 PetriNetUnfolder]: 40551/58271 cut-off events. [2022-12-13 00:33:38,788 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 00:33:38,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112191 conditions, 58271 events. 40551/58271 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3408. Compared 444495 event pairs, 5311 based on Foata normal form. 0/35848 useless extension candidates. Maximal degree in co-relation 112179. Up to 46041 conditions per place. [2022-12-13 00:33:38,989 INFO L137 encePairwiseOnDemand]: 61/67 looper letters, 37 selfloop transitions, 2 changer transitions 46/99 dead transitions. [2022-12-13 00:33:38,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 380 flow [2022-12-13 00:33:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:33:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:33:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2022-12-13 00:33:38,999 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 00:33:39,000 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 146 flow. Second operand 3 states and 134 transitions. [2022-12-13 00:33:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 380 flow [2022-12-13 00:33:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 00:33:39,008 INFO L231 Difference]: Finished difference. Result has 74 places, 40 transitions, 92 flow [2022-12-13 00:33:39,010 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=74, PETRI_TRANSITIONS=40} [2022-12-13 00:33:39,012 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2022-12-13 00:33:39,013 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:39,013 INFO L89 Accepts]: Start accepts. Operand has 74 places, 40 transitions, 92 flow [2022-12-13 00:33:39,016 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:39,017 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:39,017 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 40 transitions, 92 flow [2022-12-13 00:33:39,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 92 flow [2022-12-13 00:33:39,040 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 00:33:39,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:33:39,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 83 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 00:33:39,044 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 92 flow [2022-12-13 00:33:39,045 INFO L226 LiptonReduction]: Number of co-enabled transitions 962 [2022-12-13 00:33:39,181 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:39,183 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 171 [2022-12-13 00:33:39,183 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 92 flow [2022-12-13 00:33:39,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:33:39,184 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:39,184 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 00:33:39,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -568989401, now seen corresponding path program 1 times [2022-12-13 00:33:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:39,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161996691] [2022-12-13 00:33:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:39,366 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 00:33:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:39,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161996691] [2022-12-13 00:33:39,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161996691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:39,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:39,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:33:39,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035218472] [2022-12-13 00:33:39,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:39,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:33:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:33:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:33:39,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 00:33:39,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:33:39,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:39,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 00:33:39,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:42,121 INFO L130 PetriNetUnfolder]: 25873/36611 cut-off events. [2022-12-13 00:33:42,121 INFO L131 PetriNetUnfolder]: For 1066/1066 co-relation queries the response was YES. [2022-12-13 00:33:42,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73075 conditions, 36611 events. 25873/36611 cut-off events. For 1066/1066 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 229089 event pairs, 9487 based on Foata normal form. 0/28897 useless extension candidates. Maximal degree in co-relation 73065. Up to 24388 conditions per place. [2022-12-13 00:33:42,326 INFO L137 encePairwiseOnDemand]: 31/40 looper letters, 47 selfloop transitions, 8 changer transitions 2/66 dead transitions. [2022-12-13 00:33:42,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 264 flow [2022-12-13 00:33:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:33:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:33:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-13 00:33:42,329 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-12-13 00:33:42,329 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 92 flow. Second operand 3 states and 85 transitions. [2022-12-13 00:33:42,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 264 flow [2022-12-13 00:33:42,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:33:42,350 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 148 flow [2022-12-13 00:33:42,350 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2022-12-13 00:33:42,351 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -26 predicate places. [2022-12-13 00:33:42,351 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:42,351 INFO L89 Accepts]: Start accepts. Operand has 53 places, 46 transitions, 148 flow [2022-12-13 00:33:42,352 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:42,352 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:42,353 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 46 transitions, 148 flow [2022-12-13 00:33:42,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 148 flow [2022-12-13 00:33:42,392 INFO L130 PetriNetUnfolder]: 260/800 cut-off events. [2022-12-13 00:33:42,392 INFO L131 PetriNetUnfolder]: For 58/69 co-relation queries the response was YES. [2022-12-13 00:33:42,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 800 events. 260/800 cut-off events. For 58/69 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6038 event pairs, 138 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 1381. Up to 365 conditions per place. [2022-12-13 00:33:42,400 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 46 transitions, 148 flow [2022-12-13 00:33:42,400 INFO L226 LiptonReduction]: Number of co-enabled transitions 1106 [2022-12-13 00:33:42,412 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:42,413 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 62 [2022-12-13 00:33:42,414 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 148 flow [2022-12-13 00:33:42,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 00:33:42,417 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:42,417 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 00:33:42,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash -458802157, now seen corresponding path program 1 times [2022-12-13 00:33:42,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:42,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819290836] [2022-12-13 00:33:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:42,586 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 00:33:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:42,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819290836] [2022-12-13 00:33:42,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819290836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:42,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:42,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:33:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975312798] [2022-12-13 00:33:42,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:42,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:33:42,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:42,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:33:42,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:33:42,591 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:33:42,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:33:42,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:42,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:33:42,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:44,112 INFO L130 PetriNetUnfolder]: 19137/27249 cut-off events. [2022-12-13 00:33:44,112 INFO L131 PetriNetUnfolder]: For 10036/10036 co-relation queries the response was YES. [2022-12-13 00:33:44,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65235 conditions, 27249 events. 19137/27249 cut-off events. For 10036/10036 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 161246 event pairs, 4783 based on Foata normal form. 280/22405 useless extension candidates. Maximal degree in co-relation 65223. Up to 13733 conditions per place. [2022-12-13 00:33:44,304 INFO L137 encePairwiseOnDemand]: 30/39 looper letters, 59 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2022-12-13 00:33:44,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 374 flow [2022-12-13 00:33:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:33:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:33:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2022-12-13 00:33:44,305 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2022-12-13 00:33:44,305 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 148 flow. Second operand 4 states and 99 transitions. [2022-12-13 00:33:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 374 flow [2022-12-13 00:33:44,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 348 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:33:44,347 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,347 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2022-12-13 00:33:44,347 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -23 predicate places. [2022-12-13 00:33:44,348 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:44,348 INFO L89 Accepts]: Start accepts. Operand has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,348 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:44,349 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:44,349 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,384 INFO L130 PetriNetUnfolder]: 206/618 cut-off events. [2022-12-13 00:33:44,385 INFO L131 PetriNetUnfolder]: For 220/248 co-relation queries the response was YES. [2022-12-13 00:33:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 618 events. 206/618 cut-off events. For 220/248 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4194 event pairs, 86 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 1275. Up to 295 conditions per place. [2022-12-13 00:33:44,390 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,391 INFO L226 LiptonReduction]: Number of co-enabled transitions 1210 [2022-12-13 00:33:44,394 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:44,395 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 47 [2022-12-13 00:33:44,395 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 200 flow [2022-12-13 00:33:44,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 00:33:44,395 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:44,395 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 00:33:44,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1333769628, now seen corresponding path program 1 times [2022-12-13 00:33:44,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:44,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917072033] [2022-12-13 00:33:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:44,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:44,516 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 00:33:44,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:44,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917072033] [2022-12-13 00:33:44,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917072033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:44,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:44,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:33:44,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605430248] [2022-12-13 00:33:44,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:44,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:33:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:44,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:33:44,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:33:44,517 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:33:44,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:33:44,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:44,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:33:44,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:46,339 INFO L130 PetriNetUnfolder]: 18712/26897 cut-off events. [2022-12-13 00:33:46,340 INFO L131 PetriNetUnfolder]: For 16709/16709 co-relation queries the response was YES. [2022-12-13 00:33:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67747 conditions, 26897 events. 18712/26897 cut-off events. For 16709/16709 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 165957 event pairs, 5111 based on Foata normal form. 60/21918 useless extension candidates. Maximal degree in co-relation 67732. Up to 17057 conditions per place. [2022-12-13 00:33:46,494 INFO L137 encePairwiseOnDemand]: 30/39 looper letters, 67 selfloop transitions, 18 changer transitions 0/94 dead transitions. [2022-12-13 00:33:46,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 504 flow [2022-12-13 00:33:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:33:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:33:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2022-12-13 00:33:46,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2022-12-13 00:33:46,495 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 200 flow. Second operand 4 states and 112 transitions. [2022-12-13 00:33:46,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 504 flow [2022-12-13 00:33:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:33:46,513 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,513 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-12-13 00:33:46,514 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2022-12-13 00:33:46,514 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:46,514 INFO L89 Accepts]: Start accepts. Operand has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,515 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:46,515 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:46,515 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,552 INFO L130 PetriNetUnfolder]: 180/562 cut-off events. [2022-12-13 00:33:46,552 INFO L131 PetriNetUnfolder]: For 480/539 co-relation queries the response was YES. [2022-12-13 00:33:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 562 events. 180/562 cut-off events. For 480/539 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3743 event pairs, 81 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 1397. Up to 263 conditions per place. [2022-12-13 00:33:46,558 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,558 INFO L226 LiptonReduction]: Number of co-enabled transitions 1336 [2022-12-13 00:33:46,561 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:46,561 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 47 [2022-12-13 00:33:46,561 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 299 flow [2022-12-13 00:33:46,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 00:33:46,562 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:46,562 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:46,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 00:33:46,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1602915022, now seen corresponding path program 1 times [2022-12-13 00:33:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:46,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539680441] [2022-12-13 00:33:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:46,699 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 00:33:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539680441] [2022-12-13 00:33:46,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539680441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:46,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:46,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:33:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335734272] [2022-12-13 00:33:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:46,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:33:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:46,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:33:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:33:46,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2022-12-13 00:33:46,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 299 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 00:33:46,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:46,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2022-12-13 00:33:46,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:48,157 INFO L130 PetriNetUnfolder]: 14032/21001 cut-off events. [2022-12-13 00:33:48,158 INFO L131 PetriNetUnfolder]: For 20212/20821 co-relation queries the response was YES. [2022-12-13 00:33:48,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55442 conditions, 21001 events. 14032/21001 cut-off events. For 20212/20821 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 141859 event pairs, 4666 based on Foata normal form. 581/16875 useless extension candidates. Maximal degree in co-relation 55424. Up to 13837 conditions per place. [2022-12-13 00:33:48,292 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2022-12-13 00:33:48,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 491 flow [2022-12-13 00:33:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:33:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:33:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2022-12-13 00:33:48,293 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2022-12-13 00:33:48,293 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 299 flow. Second operand 3 states and 79 transitions. [2022-12-13 00:33:48,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 491 flow [2022-12-13 00:33:48,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:33:48,338 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,338 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2022-12-13 00:33:48,338 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2022-12-13 00:33:48,339 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:48,339 INFO L89 Accepts]: Start accepts. Operand has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,339 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:48,339 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:48,339 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,365 INFO L130 PetriNetUnfolder]: 151/507 cut-off events. [2022-12-13 00:33:48,366 INFO L131 PetriNetUnfolder]: For 496/555 co-relation queries the response was YES. [2022-12-13 00:33:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 507 events. 151/507 cut-off events. For 496/555 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3364 event pairs, 64 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 1305. Up to 224 conditions per place. [2022-12-13 00:33:48,371 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,371 INFO L226 LiptonReduction]: Number of co-enabled transitions 1332 [2022-12-13 00:33:48,373 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:48,373 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 34 [2022-12-13 00:33:48,374 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 316 flow [2022-12-13 00:33:48,374 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 00:33:48,374 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:48,374 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 00:33:48,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1222255048, now seen corresponding path program 1 times [2022-12-13 00:33:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:48,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406048412] [2022-12-13 00:33:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:48,530 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 00:33:48,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406048412] [2022-12-13 00:33:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406048412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:33:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459907549] [2022-12-13 00:33:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:33:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:33:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:33:48,532 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:33:48,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:33:48,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:48,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:33:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:50,980 INFO L130 PetriNetUnfolder]: 27650/38483 cut-off events. [2022-12-13 00:33:50,980 INFO L131 PetriNetUnfolder]: For 31923/33300 co-relation queries the response was YES. [2022-12-13 00:33:51,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98230 conditions, 38483 events. 27650/38483 cut-off events. For 31923/33300 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 247011 event pairs, 9524 based on Foata normal form. 625/24589 useless extension candidates. Maximal degree in co-relation 98209. Up to 37108 conditions per place. [2022-12-13 00:33:51,223 INFO L137 encePairwiseOnDemand]: 25/39 looper letters, 56 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2022-12-13 00:33:51,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 578 flow [2022-12-13 00:33:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:33:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:33:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2022-12-13 00:33:51,224 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2022-12-13 00:33:51,224 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 316 flow. Second operand 3 states and 83 transitions. [2022-12-13 00:33:51,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 578 flow [2022-12-13 00:33:51,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:33:51,251 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:51,251 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2022-12-13 00:33:51,251 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2022-12-13 00:33:51,251 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:51,251 INFO L89 Accepts]: Start accepts. Operand has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:51,252 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:51,252 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:51,252 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:52,046 INFO L130 PetriNetUnfolder]: 7169/12433 cut-off events. [2022-12-13 00:33:52,046 INFO L131 PetriNetUnfolder]: For 5272/5436 co-relation queries the response was YES. [2022-12-13 00:33:52,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26828 conditions, 12433 events. 7169/12433 cut-off events. For 5272/5436 co-relation queries the response was YES. Maximal size of possible extension queue 1470. Compared 110282 event pairs, 4077 based on Foata normal form. 21/6338 useless extension candidates. Maximal degree in co-relation 26809. Up to 9784 conditions per place. [2022-12-13 00:33:52,146 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:52,146 INFO L226 LiptonReduction]: Number of co-enabled transitions 1730 [2022-12-13 00:33:52,240 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:52,241 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 990 [2022-12-13 00:33:52,241 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 395 flow [2022-12-13 00:33:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 00:33:52,241 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:52,241 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:52,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 00:33:52,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash -14580347, now seen corresponding path program 1 times [2022-12-13 00:33:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157615148] [2022-12-13 00:33:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:52,428 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 00:33:52,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157615148] [2022-12-13 00:33:52,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157615148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:52,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:52,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:33:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618566192] [2022-12-13 00:33:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:52,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:33:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:33:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:33:52,432 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:33:52,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:33:52,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:52,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:33:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:33:56,992 INFO L130 PetriNetUnfolder]: 46474/65159 cut-off events. [2022-12-13 00:33:56,992 INFO L131 PetriNetUnfolder]: For 74290/76005 co-relation queries the response was YES. [2022-12-13 00:33:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206122 conditions, 65159 events. 46474/65159 cut-off events. For 74290/76005 co-relation queries the response was YES. Maximal size of possible extension queue 2656. Compared 447457 event pairs, 8326 based on Foata normal form. 967/51077 useless extension candidates. Maximal degree in co-relation 206100. Up to 40979 conditions per place. [2022-12-13 00:33:57,410 INFO L137 encePairwiseOnDemand]: 29/39 looper letters, 138 selfloop transitions, 32 changer transitions 2/185 dead transitions. [2022-12-13 00:33:57,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 185 transitions, 1321 flow [2022-12-13 00:33:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:33:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:33:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2022-12-13 00:33:57,412 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2022-12-13 00:33:57,412 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 395 flow. Second operand 6 states and 166 transitions. [2022-12-13 00:33:57,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 185 transitions, 1321 flow [2022-12-13 00:33:57,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 185 transitions, 1280 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:33:57,663 INFO L231 Difference]: Finished difference. Result has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:57,667 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=704, PETRI_PLACES=71, PETRI_TRANSITIONS=90} [2022-12-13 00:33:57,669 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -8 predicate places. [2022-12-13 00:33:57,671 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:33:57,671 INFO L89 Accepts]: Start accepts. Operand has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:57,675 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:33:57,676 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:33:57,676 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:57,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:58,734 INFO L130 PetriNetUnfolder]: 12730/21128 cut-off events. [2022-12-13 00:33:58,734 INFO L131 PetriNetUnfolder]: For 7585/7835 co-relation queries the response was YES. [2022-12-13 00:33:58,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44581 conditions, 21128 events. 12730/21128 cut-off events. For 7585/7835 co-relation queries the response was YES. Maximal size of possible extension queue 2634. Compared 193400 event pairs, 7245 based on Foata normal form. 22/9586 useless extension candidates. Maximal degree in co-relation 44558. Up to 18343 conditions per place. [2022-12-13 00:33:58,920 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:58,935 INFO L226 LiptonReduction]: Number of co-enabled transitions 2396 [2022-12-13 00:33:59,200 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:33:59,201 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1530 [2022-12-13 00:33:59,201 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 90 transitions, 704 flow [2022-12-13 00:33:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:33:59,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:33:59,201 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:33:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 00:33:59,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:33:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:33:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1048456492, now seen corresponding path program 1 times [2022-12-13 00:33:59,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:33:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782380601] [2022-12-13 00:33:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:33:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:33:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:33:59,417 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 00:33:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:33:59,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782380601] [2022-12-13 00:33:59,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782380601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:33:59,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:33:59,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:33:59,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085808049] [2022-12-13 00:33:59,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:33:59,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:33:59,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:33:59,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:33:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:33:59,419 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2022-12-13 00:33:59,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 90 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:33:59,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:33:59,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2022-12-13 00:33:59,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:34:05,155 INFO L130 PetriNetUnfolder]: 54288/78388 cut-off events. [2022-12-13 00:34:05,155 INFO L131 PetriNetUnfolder]: For 108722/111814 co-relation queries the response was YES. [2022-12-13 00:34:05,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239170 conditions, 78388 events. 54288/78388 cut-off events. For 108722/111814 co-relation queries the response was YES. Maximal size of possible extension queue 3764. Compared 588108 event pairs, 27536 based on Foata normal form. 904/58048 useless extension candidates. Maximal degree in co-relation 239144. Up to 53465 conditions per place. [2022-12-13 00:34:05,610 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 74 selfloop transitions, 13 changer transitions 9/120 dead transitions. [2022-12-13 00:34:05,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 120 transitions, 999 flow [2022-12-13 00:34:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:34:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:34:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2022-12-13 00:34:05,612 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7350427350427351 [2022-12-13 00:34:05,612 INFO L175 Difference]: Start difference. First operand has 71 places, 90 transitions, 704 flow. Second operand 3 states and 86 transitions. [2022-12-13 00:34:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 120 transitions, 999 flow [2022-12-13 00:34:05,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 120 transitions, 999 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:34:05,885 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:05,885 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=637, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2022-12-13 00:34:05,886 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -5 predicate places. [2022-12-13 00:34:05,886 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:34:05,886 INFO L89 Accepts]: Start accepts. Operand has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:05,887 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:34:05,887 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:34:05,887 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:05,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:07,497 INFO L130 PetriNetUnfolder]: 16594/27099 cut-off events. [2022-12-13 00:34:07,498 INFO L131 PetriNetUnfolder]: For 10516/10699 co-relation queries the response was YES. [2022-12-13 00:34:07,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56452 conditions, 27099 events. 16594/27099 cut-off events. For 10516/10699 co-relation queries the response was YES. Maximal size of possible extension queue 3156. Compared 250245 event pairs, 9695 based on Foata normal form. 21/11902 useless extension candidates. Maximal degree in co-relation 56427. Up to 24130 conditions per place. [2022-12-13 00:34:07,770 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:07,770 INFO L226 LiptonReduction]: Number of co-enabled transitions 2052 [2022-12-13 00:34:08,027 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:34:08,029 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2143 [2022-12-13 00:34:08,029 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 637 flow [2022-12-13 00:34:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:34:08,030 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:34:08,030 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:34:08,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 00:34:08,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:34:08,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:34:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2116185127, now seen corresponding path program 2 times [2022-12-13 00:34:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:34:08,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872568592] [2022-12-13 00:34:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:34:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:34:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:34:08,167 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 00:34:08,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:34:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872568592] [2022-12-13 00:34:08,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872568592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:34:08,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:34:08,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:34:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402161839] [2022-12-13 00:34:08,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:34:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:34:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:34:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:34:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:34:08,169 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:34:08,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:34:08,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:34:08,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:34:08,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:34:12,468 INFO L130 PetriNetUnfolder]: 39378/57940 cut-off events. [2022-12-13 00:34:12,469 INFO L131 PetriNetUnfolder]: For 68191/71466 co-relation queries the response was YES. [2022-12-13 00:34:12,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183379 conditions, 57940 events. 39378/57940 cut-off events. For 68191/71466 co-relation queries the response was YES. Maximal size of possible extension queue 3251. Compared 436898 event pairs, 7378 based on Foata normal form. 1703/36440 useless extension candidates. Maximal degree in co-relation 183351. Up to 52705 conditions per place. [2022-12-13 00:34:12,784 INFO L137 encePairwiseOnDemand]: 25/39 looper letters, 84 selfloop transitions, 25 changer transitions 5/137 dead transitions. [2022-12-13 00:34:12,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 1263 flow [2022-12-13 00:34:12,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:34:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:34:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2022-12-13 00:34:12,786 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2022-12-13 00:34:12,786 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 637 flow. Second operand 4 states and 115 transitions. [2022-12-13 00:34:12,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 1263 flow [2022-12-13 00:34:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 137 transitions, 1235 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 00:34:12,835 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:12,835 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2022-12-13 00:34:12,836 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2022-12-13 00:34:12,836 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:34:12,836 INFO L89 Accepts]: Start accepts. Operand has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:12,838 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:34:12,838 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:34:12,838 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:12,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:14,186 INFO L130 PetriNetUnfolder]: 12443/22261 cut-off events. [2022-12-13 00:34:14,186 INFO L131 PetriNetUnfolder]: For 11696/24395 co-relation queries the response was YES. [2022-12-13 00:34:14,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67430 conditions, 22261 events. 12443/22261 cut-off events. For 11696/24395 co-relation queries the response was YES. Maximal size of possible extension queue 2910. Compared 218597 event pairs, 3639 based on Foata normal form. 64/10820 useless extension candidates. Maximal degree in co-relation 67403. Up to 18910 conditions per place. [2022-12-13 00:34:14,419 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:14,419 INFO L226 LiptonReduction]: Number of co-enabled transitions 2424 [2022-12-13 00:34:14,663 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:34:14,664 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1828 [2022-12-13 00:34:14,664 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 744 flow [2022-12-13 00:34:14,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:34:14,664 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:34:14,664 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:34:14,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 00:34:14,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:34:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:34:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2026691060, now seen corresponding path program 1 times [2022-12-13 00:34:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:34:14,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738912151] [2022-12-13 00:34:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:34:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:34:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:34:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:34:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:34:15,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738912151] [2022-12-13 00:34:15,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738912151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:34:15,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:34:15,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:34:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219459875] [2022-12-13 00:34:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:34:15,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:34:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:34:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:34:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:34:15,308 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:34:15,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 00:34:15,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:34:15,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:34:15,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:34:21,724 INFO L130 PetriNetUnfolder]: 56243/83697 cut-off events. [2022-12-13 00:34:21,724 INFO L131 PetriNetUnfolder]: For 168038/181660 co-relation queries the response was YES. [2022-12-13 00:34:22,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325362 conditions, 83697 events. 56243/83697 cut-off events. For 168038/181660 co-relation queries the response was YES. Maximal size of possible extension queue 4498. Compared 666197 event pairs, 6741 based on Foata normal form. 2082/66896 useless extension candidates. Maximal degree in co-relation 325332. Up to 54886 conditions per place. [2022-12-13 00:34:22,213 INFO L137 encePairwiseOnDemand]: 27/39 looper letters, 176 selfloop transitions, 64 changer transitions 24/281 dead transitions. [2022-12-13 00:34:22,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 281 transitions, 2584 flow [2022-12-13 00:34:22,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 00:34:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 00:34:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2022-12-13 00:34:22,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2022-12-13 00:34:22,217 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 744 flow. Second operand 10 states and 247 transitions. [2022-12-13 00:34:22,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 281 transitions, 2584 flow [2022-12-13 00:34:22,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 281 transitions, 2372 flow, removed 42 selfloop flow, removed 3 redundant places. [2022-12-13 00:34:22,622 INFO L231 Difference]: Finished difference. Result has 89 places, 136 transitions, 1366 flow [2022-12-13 00:34:22,622 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1366, PETRI_PLACES=89, PETRI_TRANSITIONS=136} [2022-12-13 00:34:22,623 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2022-12-13 00:34:22,623 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:34:22,623 INFO L89 Accepts]: Start accepts. Operand has 89 places, 136 transitions, 1366 flow [2022-12-13 00:34:22,624 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:34:22,624 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:34:22,624 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 136 transitions, 1366 flow [2022-12-13 00:34:22,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 136 transitions, 1366 flow [2022-12-13 00:34:24,902 INFO L130 PetriNetUnfolder]: 19760/34782 cut-off events. [2022-12-13 00:34:24,903 INFO L131 PetriNetUnfolder]: For 38769/59332 co-relation queries the response was YES. [2022-12-13 00:34:25,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111193 conditions, 34782 events. 19760/34782 cut-off events. For 38769/59332 co-relation queries the response was YES. Maximal size of possible extension queue 4959. Compared 353645 event pairs, 5443 based on Foata normal form. 160/16650 useless extension candidates. Maximal degree in co-relation 111161. Up to 29161 conditions per place. [2022-12-13 00:34:25,387 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 136 transitions, 1366 flow [2022-12-13 00:34:25,387 INFO L226 LiptonReduction]: Number of co-enabled transitions 3370 [2022-12-13 00:34:26,496 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:34:26,497 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 3874 [2022-12-13 00:34:26,497 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 136 transitions, 1374 flow [2022-12-13 00:34:26,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 00:34:26,497 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:34:26,497 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 00:34:26,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 00:34:26,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:34:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:34:26,498 INFO L85 PathProgramCache]: Analyzing trace with hash -869664462, now seen corresponding path program 1 times [2022-12-13 00:34:26,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:34:26,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154078760] [2022-12-13 00:34:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:34:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:34:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:34:26,652 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 00:34:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:34:26,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154078760] [2022-12-13 00:34:26,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154078760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:34:26,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:34:26,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:34:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822946541] [2022-12-13 00:34:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:34:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:34:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:34:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:34:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:34:26,654 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2022-12-13 00:34:26,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 136 transitions, 1374 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:34:26,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:34:26,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2022-12-13 00:34:26,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand