/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/mix053_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 00:45:21,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 00:45:21,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 00:45:21,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 00:45:21,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 00:45:21,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 00:45:21,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 00:45:21,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 00:45:21,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 00:45:21,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 00:45:21,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 00:45:21,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 00:45:21,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 00:45:21,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 00:45:21,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 00:45:21,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 00:45:21,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 00:45:21,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 00:45:21,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 00:45:21,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 00:45:21,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 00:45:21,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 00:45:21,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 00:45:21,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 00:45:21,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 00:45:21,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 00:45:21,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 00:45:21,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 00:45:21,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 00:45:21,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 00:45:21,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 00:45:21,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 00:45:21,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 00:45:21,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 00:45:21,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 00:45:21,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 00:45:21,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 00:45:21,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 00:45:21,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 00:45:21,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 00:45:21,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 00:45:21,772 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 00:45:21,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 00:45:21,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 00:45:21,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 00:45:21,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 00:45:21,802 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 00:45:21,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 00:45:21,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 00:45:21,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 00:45:21,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 00:45:21,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 00:45:21,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 00:45:21,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 00:45:21,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:45:21,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 00:45:21,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 00:45:21,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 00:45:22,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 00:45:22,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 00:45:22,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 00:45:22,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 00:45:22,107 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 00:45:22,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2022-12-13 00:45:23,011 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 00:45:23,233 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 00:45:23,234 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2022-12-13 00:45:23,250 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da158b92/2dafff90b7fd4adab411c56d76e8cbc2/FLAGe3ec0b603 [2022-12-13 00:45:23,260 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3da158b92/2dafff90b7fd4adab411c56d76e8cbc2 [2022-12-13 00:45:23,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 00:45:23,266 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 00:45:23,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 00:45:23,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 00:45:23,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 00:45:23,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732fa9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23, skipping insertion in model container [2022-12-13 00:45:23,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 00:45:23,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 00:45:23,448 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 00:45:23,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,618 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:45:23,672 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 00:45:23,680 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 00:45:23,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,730 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,733 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:23,737 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:23,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:45:23,774 INFO L208 MainTranslator]: Completed translation [2022-12-13 00:45:23,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23 WrapperNode [2022-12-13 00:45:23,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 00:45:23,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 00:45:23,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 00:45:23,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 00:45:23,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,842 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-12-13 00:45:23,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 00:45:23,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 00:45:23,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 00:45:23,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 00:45:23,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 00:45:23,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 00:45:23,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 00:45:23,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 00:45:23,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (1/1) ... [2022-12-13 00:45:23,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:45:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 00:45:23,937 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 00:45:24,007 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 00:45:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 00:45:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 00:45:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 00:45:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 00:45:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 00:45:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 00:45:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 00:45:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 00:45:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 00:45:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 00:45:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 00:45:24,040 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 00:45:24,197 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 00:45:24,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 00:45:24,502 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 00:45:24,597 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 00:45:24,597 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 00:45:24,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:45:24 BoogieIcfgContainer [2022-12-13 00:45:24,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 00:45:24,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 00:45:24,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 00:45:24,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 00:45:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:45:23" (1/3) ... [2022-12-13 00:45:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226ae98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:45:24, skipping insertion in model container [2022-12-13 00:45:24,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:23" (2/3) ... [2022-12-13 00:45:24,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226ae98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:45:24, skipping insertion in model container [2022-12-13 00:45:24,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:45:24" (3/3) ... [2022-12-13 00:45:24,606 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-12-13 00:45:24,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 00:45:24,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 00:45:24,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 00:45:24,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 00:45:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 00:45:24,742 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 00:45:24,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:24,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 00:45:24,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 00:45:24,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:24,755 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:24,777 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:24,820 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 00:45:24,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:24,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-13 00:45:24,825 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:24,825 INFO L226 LiptonReduction]: Number of co-enabled transitions 2882 [2022-12-13 00:45:30,635 INFO L241 LiptonReduction]: Total number of compositions: 96 [2022-12-13 00:45:30,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 00:45:30,650 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;@6ba0ab3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 00:45:30,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 00:45:30,653 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-13 00:45:30,653 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:30,653 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:30,654 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:30,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 434841595, now seen corresponding path program 1 times [2022-12-13 00:45:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:30,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123382455] [2022-12-13 00:45:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:45:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:30,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123382455] [2022-12-13 00:45:30,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123382455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:30,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:30,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:45:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038211301] [2022-12-13 00:45:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:31,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:45:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:45:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:45:31,029 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 72 [2022-12-13 00:45:31,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:31,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:31,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 72 [2022-12-13 00:45:31,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:35,653 INFO L130 PetriNetUnfolder]: 43504/62384 cut-off events. [2022-12-13 00:45:35,653 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-12-13 00:45:35,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120293 conditions, 62384 events. 43504/62384 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 464046 event pairs, 11360 based on Foata normal form. 0/38934 useless extension candidates. Maximal degree in co-relation 120281. Up to 48285 conditions per place. [2022-12-13 00:45:35,873 INFO L137 encePairwiseOnDemand]: 66/72 looper letters, 40 selfloop transitions, 2 changer transitions 55/111 dead transitions. [2022-12-13 00:45:35,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 429 flow [2022-12-13 00:45:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:45:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:45:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2022-12-13 00:45:35,882 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2022-12-13 00:45:35,883 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 156 flow. Second operand 3 states and 148 transitions. [2022-12-13 00:45:35,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 429 flow [2022-12-13 00:45:35,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 00:45:35,889 INFO L231 Difference]: Finished difference. Result has 79 places, 40 transitions, 92 flow [2022-12-13 00:45:35,891 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=79, PETRI_TRANSITIONS=40} [2022-12-13 00:45:35,893 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2022-12-13 00:45:35,894 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:35,894 INFO L89 Accepts]: Start accepts. Operand has 79 places, 40 transitions, 92 flow [2022-12-13 00:45:35,898 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:35,898 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:35,898 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 40 transitions, 92 flow [2022-12-13 00:45:35,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 92 flow [2022-12-13 00:45:35,904 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 00:45:35,904 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:35,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 00:45:35,908 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 92 flow [2022-12-13 00:45:35,908 INFO L226 LiptonReduction]: Number of co-enabled transitions 958 [2022-12-13 00:45:36,019 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:36,022 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 128 [2022-12-13 00:45:36,022 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 92 flow [2022-12-13 00:45:36,022 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 00:45:36,022 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:36,022 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 00:45:36,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1719553432, now seen corresponding path program 1 times [2022-12-13 00:45:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:36,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504346827] [2022-12-13 00:45:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:36,731 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 00:45:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:36,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504346827] [2022-12-13 00:45:36,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504346827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:36,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:36,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:45:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827571398] [2022-12-13 00:45:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:36,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:45:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:45:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:45:36,735 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2022-12-13 00:45:36,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:36,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:36,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2022-12-13 00:45:36,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:38,940 INFO L130 PetriNetUnfolder]: 21055/30103 cut-off events. [2022-12-13 00:45:38,940 INFO L131 PetriNetUnfolder]: For 1198/1198 co-relation queries the response was YES. [2022-12-13 00:45:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60425 conditions, 30103 events. 21055/30103 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 192068 event pairs, 1189 based on Foata normal form. 720/25365 useless extension candidates. Maximal degree in co-relation 60415. Up to 20553 conditions per place. [2022-12-13 00:45:39,154 INFO L137 encePairwiseOnDemand]: 29/40 looper letters, 62 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2022-12-13 00:45:39,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 84 transitions, 342 flow [2022-12-13 00:45:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 00:45:39,159 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.725 [2022-12-13 00:45:39,159 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 92 flow. Second operand 4 states and 116 transitions. [2022-12-13 00:45:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 84 transitions, 342 flow [2022-12-13 00:45:39,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:45:39,162 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,162 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2022-12-13 00:45:39,163 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -29 predicate places. [2022-12-13 00:45:39,163 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:39,163 INFO L89 Accepts]: Start accepts. Operand has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,165 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:39,165 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:39,165 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,428 INFO L130 PetriNetUnfolder]: 504/1284 cut-off events. [2022-12-13 00:45:39,429 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-13 00:45:39,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1284 events. 504/1284 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9892 event pairs, 266 based on Foata normal form. 0/936 useless extension candidates. Maximal degree in co-relation 2384. Up to 677 conditions per place. [2022-12-13 00:45:39,439 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,440 INFO L226 LiptonReduction]: Number of co-enabled transitions 1240 [2022-12-13 00:45:39,452 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:39,453 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 290 [2022-12-13 00:45:39,453 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 165 flow [2022-12-13 00:45:39,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:39,454 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:39,454 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:39,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 00:45:39,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1766547358, now seen corresponding path program 1 times [2022-12-13 00:45:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:39,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778791273] [2022-12-13 00:45:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:39,830 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 00:45:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:39,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778791273] [2022-12-13 00:45:39,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778791273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:39,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:45:39,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862378103] [2022-12-13 00:45:39,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:45:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:45:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:45:39,835 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:39,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:39,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:39,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:39,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:41,546 INFO L130 PetriNetUnfolder]: 17698/25802 cut-off events. [2022-12-13 00:45:41,567 INFO L131 PetriNetUnfolder]: For 7041/7080 co-relation queries the response was YES. [2022-12-13 00:45:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63596 conditions, 25802 events. 17698/25802 cut-off events. For 7041/7080 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 167107 event pairs, 7790 based on Foata normal form. 67/20743 useless extension candidates. Maximal degree in co-relation 63584. Up to 22064 conditions per place. [2022-12-13 00:45:41,806 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 59 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2022-12-13 00:45:41,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 427 flow [2022-12-13 00:45:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2022-12-13 00:45:41,808 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6625 [2022-12-13 00:45:41,808 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 165 flow. Second operand 4 states and 106 transitions. [2022-12-13 00:45:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 427 flow [2022-12-13 00:45:41,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:45:41,819 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,819 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2022-12-13 00:45:41,821 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -24 predicate places. [2022-12-13 00:45:41,821 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:41,821 INFO L89 Accepts]: Start accepts. Operand has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,823 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:41,823 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:41,823 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,945 INFO L130 PetriNetUnfolder]: 638/1608 cut-off events. [2022-12-13 00:45:41,945 INFO L131 PetriNetUnfolder]: For 670/720 co-relation queries the response was YES. [2022-12-13 00:45:41,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3470 conditions, 1608 events. 638/1608 cut-off events. For 670/720 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12980 event pairs, 256 based on Foata normal form. 1/1185 useless extension candidates. Maximal degree in co-relation 3457. Up to 849 conditions per place. [2022-12-13 00:45:41,964 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,964 INFO L226 LiptonReduction]: Number of co-enabled transitions 1474 [2022-12-13 00:45:41,976 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:41,977 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 156 [2022-12-13 00:45:41,977 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 258 flow [2022-12-13 00:45:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:41,977 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:41,977 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:41,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 00:45:41,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1932009944, now seen corresponding path program 1 times [2022-12-13 00:45:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:41,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543965875] [2022-12-13 00:45:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:42,310 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 00:45:42,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:42,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543965875] [2022-12-13 00:45:42,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543965875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:42,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:42,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:45:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217937421] [2022-12-13 00:45:42,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:45:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:45:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:45:42,315 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:42,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:42,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:42,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:42,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:44,386 INFO L130 PetriNetUnfolder]: 17909/26045 cut-off events. [2022-12-13 00:45:44,386 INFO L131 PetriNetUnfolder]: For 16781/16944 co-relation queries the response was YES. [2022-12-13 00:45:44,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70889 conditions, 26045 events. 17909/26045 cut-off events. For 16781/16944 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 167098 event pairs, 5618 based on Foata normal form. 91/21011 useless extension candidates. Maximal degree in co-relation 70873. Up to 19808 conditions per place. [2022-12-13 00:45:44,581 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 69 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2022-12-13 00:45:44,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 581 flow [2022-12-13 00:45:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2022-12-13 00:45:44,582 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-13 00:45:44,582 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 258 flow. Second operand 4 states and 112 transitions. [2022-12-13 00:45:44,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 581 flow [2022-12-13 00:45:44,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 581 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:45:44,626 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,626 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-12-13 00:45:44,627 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -20 predicate places. [2022-12-13 00:45:44,627 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:44,627 INFO L89 Accepts]: Start accepts. Operand has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,628 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:44,628 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:44,628 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,924 INFO L130 PetriNetUnfolder]: 635/1633 cut-off events. [2022-12-13 00:45:44,925 INFO L131 PetriNetUnfolder]: For 1059/1119 co-relation queries the response was YES. [2022-12-13 00:45:44,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 1633 events. 635/1633 cut-off events. For 1059/1119 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13263 event pairs, 262 based on Foata normal form. 15/1213 useless extension candidates. Maximal degree in co-relation 3912. Up to 848 conditions per place. [2022-12-13 00:45:44,941 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,941 INFO L226 LiptonReduction]: Number of co-enabled transitions 1614 [2022-12-13 00:45:44,944 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:44,945 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 318 [2022-12-13 00:45:44,945 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 341 flow [2022-12-13 00:45:44,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:44,945 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:44,946 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:44,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 00:45:44,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1931954206, now seen corresponding path program 1 times [2022-12-13 00:45:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:44,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241616287] [2022-12-13 00:45:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:45,333 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 00:45:45,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241616287] [2022-12-13 00:45:45,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241616287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:45,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:45,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:45:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967710659] [2022-12-13 00:45:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:45,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:45:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:45:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:45:45,343 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:45,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:45,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:45,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:45,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:47,437 INFO L130 PetriNetUnfolder]: 18425/27071 cut-off events. [2022-12-13 00:45:47,437 INFO L131 PetriNetUnfolder]: For 30923/31115 co-relation queries the response was YES. [2022-12-13 00:45:47,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79139 conditions, 27071 events. 18425/27071 cut-off events. For 30923/31115 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 179208 event pairs, 5898 based on Foata normal form. 163/22027 useless extension candidates. Maximal degree in co-relation 79120. Up to 21723 conditions per place. [2022-12-13 00:45:47,626 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 81 selfloop transitions, 27 changer transitions 0/124 dead transitions. [2022-12-13 00:45:47,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 819 flow [2022-12-13 00:45:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:45:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:45:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2022-12-13 00:45:47,627 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.69 [2022-12-13 00:45:47,627 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 341 flow. Second operand 5 states and 138 transitions. [2022-12-13 00:45:47,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 819 flow [2022-12-13 00:45:47,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 798 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 00:45:47,660 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,661 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2022-12-13 00:45:47,661 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -15 predicate places. [2022-12-13 00:45:47,661 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:47,661 INFO L89 Accepts]: Start accepts. Operand has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,662 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:47,662 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:47,662 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,777 INFO L130 PetriNetUnfolder]: 758/1816 cut-off events. [2022-12-13 00:45:47,778 INFO L131 PetriNetUnfolder]: For 2529/2647 co-relation queries the response was YES. [2022-12-13 00:45:47,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 1816 events. 758/1816 cut-off events. For 2529/2647 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14438 event pairs, 254 based on Foata normal form. 52/1404 useless extension candidates. Maximal degree in co-relation 5086. Up to 952 conditions per place. [2022-12-13 00:45:47,795 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,795 INFO L226 LiptonReduction]: Number of co-enabled transitions 1954 [2022-12-13 00:45:47,798 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:47,799 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 138 [2022-12-13 00:45:47,799 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 553 flow [2022-12-13 00:45:47,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:47,799 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:47,799 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:47,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 00:45:47,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1932087196, now seen corresponding path program 2 times [2022-12-13 00:45:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533328204] [2022-12-13 00:45:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:48,366 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 00:45:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:48,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533328204] [2022-12-13 00:45:48,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533328204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:48,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:48,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:45:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588601224] [2022-12-13 00:45:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:48,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:45:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:45:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:45:48,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2022-12-13 00:45:48,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:48,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:48,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2022-12-13 00:45:48,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:51,322 INFO L130 PetriNetUnfolder]: 22475/32264 cut-off events. [2022-12-13 00:45:51,323 INFO L131 PetriNetUnfolder]: For 48680/48680 co-relation queries the response was YES. [2022-12-13 00:45:51,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102568 conditions, 32264 events. 22475/32264 cut-off events. For 48680/48680 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 203055 event pairs, 4847 based on Foata normal form. 39/26700 useless extension candidates. Maximal degree in co-relation 102546. Up to 21968 conditions per place. [2022-12-13 00:45:51,524 INFO L137 encePairwiseOnDemand]: 28/40 looper letters, 81 selfloop transitions, 46 changer transitions 0/137 dead transitions. [2022-12-13 00:45:51,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 137 transitions, 1087 flow [2022-12-13 00:45:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2022-12-13 00:45:51,526 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-13 00:45:51,526 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 553 flow. Second operand 4 states and 112 transitions. [2022-12-13 00:45:51,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 137 transitions, 1087 flow [2022-12-13 00:45:51,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1069 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 00:45:51,598 INFO L231 Difference]: Finished difference. Result has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,599 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=939, PETRI_PLACES=73, PETRI_TRANSITIONS=105} [2022-12-13 00:45:51,599 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -10 predicate places. [2022-12-13 00:45:51,599 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:51,599 INFO L89 Accepts]: Start accepts. Operand has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,600 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:51,600 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:51,601 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,753 INFO L130 PetriNetUnfolder]: 873/1978 cut-off events. [2022-12-13 00:45:51,753 INFO L131 PetriNetUnfolder]: For 3882/4497 co-relation queries the response was YES. [2022-12-13 00:45:51,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 1978 events. 873/1978 cut-off events. For 3882/4497 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 15141 event pairs, 186 based on Foata normal form. 53/1559 useless extension candidates. Maximal degree in co-relation 7365. Up to 1057 conditions per place. [2022-12-13 00:45:51,782 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,782 INFO L226 LiptonReduction]: Number of co-enabled transitions 2294 [2022-12-13 00:45:51,788 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:51,789 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 190 [2022-12-13 00:45:51,789 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 105 transitions, 939 flow [2022-12-13 00:45:51,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:51,789 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:51,789 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 00:45:51,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:51,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1071619764, now seen corresponding path program 3 times [2022-12-13 00:45:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813106095] [2022-12-13 00:45:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:52,131 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 00:45:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:52,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813106095] [2022-12-13 00:45:52,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813106095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:52,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:52,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:45:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313122634] [2022-12-13 00:45:52,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:45:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:45:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:45:52,133 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:52,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 105 transitions, 939 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:52,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:52,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:52,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:54,502 INFO L130 PetriNetUnfolder]: 19670/28727 cut-off events. [2022-12-13 00:45:54,502 INFO L131 PetriNetUnfolder]: For 82991/83948 co-relation queries the response was YES. [2022-12-13 00:45:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106915 conditions, 28727 events. 19670/28727 cut-off events. For 82991/83948 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 189201 event pairs, 6641 based on Foata normal form. 626/24013 useless extension candidates. Maximal degree in co-relation 106889. Up to 22617 conditions per place. [2022-12-13 00:45:54,675 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 97 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2022-12-13 00:45:54,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1383 flow [2022-12-13 00:45:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:54,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2022-12-13 00:45:54,677 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6875 [2022-12-13 00:45:54,678 INFO L175 Difference]: Start difference. First operand has 73 places, 105 transitions, 939 flow. Second operand 4 states and 110 transitions. [2022-12-13 00:45:54,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1383 flow [2022-12-13 00:45:54,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 142 transitions, 1349 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-12-13 00:45:54,714 INFO L231 Difference]: Finished difference. Result has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,714 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1057, PETRI_PLACES=77, PETRI_TRANSITIONS=111} [2022-12-13 00:45:54,715 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2022-12-13 00:45:54,715 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:54,715 INFO L89 Accepts]: Start accepts. Operand has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,716 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:54,716 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:54,716 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,857 INFO L130 PetriNetUnfolder]: 904/2063 cut-off events. [2022-12-13 00:45:54,857 INFO L131 PetriNetUnfolder]: For 4802/5368 co-relation queries the response was YES. [2022-12-13 00:45:54,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 2063 events. 904/2063 cut-off events. For 4802/5368 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 16074 event pairs, 219 based on Foata normal form. 48/1610 useless extension candidates. Maximal degree in co-relation 7958. Up to 1084 conditions per place. [2022-12-13 00:45:54,881 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,881 INFO L226 LiptonReduction]: Number of co-enabled transitions 2404 [2022-12-13 00:45:54,885 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:54,886 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 171 [2022-12-13 00:45:54,886 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 111 transitions, 1057 flow [2022-12-13 00:45:54,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:54,886 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:54,887 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 00:45:54,887 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1879760509, now seen corresponding path program 1 times [2022-12-13 00:45:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:54,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160841723] [2022-12-13 00:45:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:54,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:55,213 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 00:45:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160841723] [2022-12-13 00:45:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160841723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:55,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:55,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:45:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477441204] [2022-12-13 00:45:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:45:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:45:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:45:55,217 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:55,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 111 transitions, 1057 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:55,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:55,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:55,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:45:57,746 INFO L130 PetriNetUnfolder]: 20023/29240 cut-off events. [2022-12-13 00:45:57,746 INFO L131 PetriNetUnfolder]: For 100079/101118 co-relation queries the response was YES. [2022-12-13 00:45:57,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112593 conditions, 29240 events. 20023/29240 cut-off events. For 100079/101118 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 192770 event pairs, 4882 based on Foata normal form. 622/24351 useless extension candidates. Maximal degree in co-relation 112564. Up to 21806 conditions per place. [2022-12-13 00:45:57,946 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 105 selfloop transitions, 31 changer transitions 0/157 dead transitions. [2022-12-13 00:45:57,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 157 transitions, 1628 flow [2022-12-13 00:45:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:45:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:45:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2022-12-13 00:45:57,952 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7125 [2022-12-13 00:45:57,952 INFO L175 Difference]: Start difference. First operand has 77 places, 111 transitions, 1057 flow. Second operand 4 states and 114 transitions. [2022-12-13 00:45:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 157 transitions, 1628 flow [2022-12-13 00:45:58,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 157 transitions, 1588 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 00:45:58,099 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,099 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1266, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2022-12-13 00:45:58,102 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, -3 predicate places. [2022-12-13 00:45:58,102 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:45:58,103 INFO L89 Accepts]: Start accepts. Operand has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,104 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:45:58,104 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:58,104 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,249 INFO L130 PetriNetUnfolder]: 910/2100 cut-off events. [2022-12-13 00:45:58,249 INFO L131 PetriNetUnfolder]: For 5957/6748 co-relation queries the response was YES. [2022-12-13 00:45:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8490 conditions, 2100 events. 910/2100 cut-off events. For 5957/6748 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 16700 event pairs, 185 based on Foata normal form. 62/1650 useless extension candidates. Maximal degree in co-relation 8462. Up to 1094 conditions per place. [2022-12-13 00:45:58,272 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,272 INFO L226 LiptonReduction]: Number of co-enabled transitions 2612 [2022-12-13 00:45:58,277 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:45:58,278 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 176 [2022-12-13 00:45:58,278 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 1266 flow [2022-12-13 00:45:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:58,278 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:45:58,278 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:45:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 00:45:58,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:45:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:45:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1933689282, now seen corresponding path program 1 times [2022-12-13 00:45:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:45:58,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366519787] [2022-12-13 00:45:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:45:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:45:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:45:58,464 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 00:45:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:45:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366519787] [2022-12-13 00:45:58,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366519787] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:45:58,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:45:58,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:45:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418948335] [2022-12-13 00:45:58,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:45:58,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:45:58,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:45:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:45:58,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:45:58,466 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 00:45:58,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 1266 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:45:58,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:45:58,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 00:45:58,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:01,458 INFO L130 PetriNetUnfolder]: 22181/32235 cut-off events. [2022-12-13 00:46:01,458 INFO L131 PetriNetUnfolder]: For 131374/132721 co-relation queries the response was YES. [2022-12-13 00:46:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130961 conditions, 32235 events. 22181/32235 cut-off events. For 131374/132721 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 215794 event pairs, 5467 based on Foata normal form. 877/27054 useless extension candidates. Maximal degree in co-relation 130930. Up to 21728 conditions per place. [2022-12-13 00:46:01,680 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 106 selfloop transitions, 56 changer transitions 0/183 dead transitions. [2022-12-13 00:46:01,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 183 transitions, 1994 flow [2022-12-13 00:46:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:46:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:46:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2022-12-13 00:46:01,682 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2022-12-13 00:46:01,682 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 1266 flow. Second operand 6 states and 152 transitions. [2022-12-13 00:46:01,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 183 transitions, 1994 flow [2022-12-13 00:46:01,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 183 transitions, 1944 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:01,830 INFO L231 Difference]: Finished difference. Result has 85 places, 141 transitions, 1645 flow [2022-12-13 00:46:01,830 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1645, PETRI_PLACES=85, PETRI_TRANSITIONS=141} [2022-12-13 00:46:01,830 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2022-12-13 00:46:01,831 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:01,831 INFO L89 Accepts]: Start accepts. Operand has 85 places, 141 transitions, 1645 flow [2022-12-13 00:46:01,831 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:01,831 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:01,832 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 141 transitions, 1645 flow [2022-12-13 00:46:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 141 transitions, 1645 flow [2022-12-13 00:46:02,014 INFO L130 PetriNetUnfolder]: 1028/2288 cut-off events. [2022-12-13 00:46:02,014 INFO L131 PetriNetUnfolder]: For 8402/9661 co-relation queries the response was YES. [2022-12-13 00:46:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10399 conditions, 2288 events. 1028/2288 cut-off events. For 8402/9661 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 17925 event pairs, 191 based on Foata normal form. 113/1880 useless extension candidates. Maximal degree in co-relation 10369. Up to 1255 conditions per place. [2022-12-13 00:46:02,047 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 141 transitions, 1645 flow [2022-12-13 00:46:02,047 INFO L226 LiptonReduction]: Number of co-enabled transitions 2956 [2022-12-13 00:46:02,984 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:46:02,985 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1154 [2022-12-13 00:46:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 141 transitions, 1655 flow [2022-12-13 00:46:02,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:02,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:02,985 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 00:46:02,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1879815286, now seen corresponding path program 1 times [2022-12-13 00:46:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:02,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416381989] [2022-12-13 00:46:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:03,471 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 00:46:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:03,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416381989] [2022-12-13 00:46:03,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416381989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:03,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:03,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:46:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031399800] [2022-12-13 00:46:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:46:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:46:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:46:03,472 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 00:46:03,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 141 transitions, 1655 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:03,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:03,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 00:46:03,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:06,895 INFO L130 PetriNetUnfolder]: 26828/37867 cut-off events. [2022-12-13 00:46:06,896 INFO L131 PetriNetUnfolder]: For 170089/170089 co-relation queries the response was YES. [2022-12-13 00:46:07,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164312 conditions, 37867 events. 26828/37867 cut-off events. For 170089/170089 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 235670 event pairs, 7649 based on Foata normal form. 96/31340 useless extension candidates. Maximal degree in co-relation 164279. Up to 30488 conditions per place. [2022-12-13 00:46:07,260 INFO L137 encePairwiseOnDemand]: 29/41 looper letters, 144 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2022-12-13 00:46:07,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2690 flow [2022-12-13 00:46:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:46:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:46:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2022-12-13 00:46:07,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2022-12-13 00:46:07,262 INFO L175 Difference]: Start difference. First operand has 85 places, 141 transitions, 1655 flow. Second operand 6 states and 145 transitions. [2022-12-13 00:46:07,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2690 flow [2022-12-13 00:46:07,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 221 transitions, 2568 flow, removed 44 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:07,732 INFO L231 Difference]: Finished difference. Result has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:07,733 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2081, PETRI_PLACES=91, PETRI_TRANSITIONS=167} [2022-12-13 00:46:07,733 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2022-12-13 00:46:07,733 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:07,733 INFO L89 Accepts]: Start accepts. Operand has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:07,734 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:07,734 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:07,735 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:07,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:07,973 INFO L130 PetriNetUnfolder]: 1080/2443 cut-off events. [2022-12-13 00:46:07,973 INFO L131 PetriNetUnfolder]: For 10155/11815 co-relation queries the response was YES. [2022-12-13 00:46:07,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12054 conditions, 2443 events. 1080/2443 cut-off events. For 10155/11815 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 19518 event pairs, 152 based on Foata normal form. 131/2020 useless extension candidates. Maximal degree in co-relation 12021. Up to 1345 conditions per place. [2022-12-13 00:46:08,002 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:08,002 INFO L226 LiptonReduction]: Number of co-enabled transitions 3392 [2022-12-13 00:46:08,012 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:08,012 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 279 [2022-12-13 00:46:08,012 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 167 transitions, 2081 flow [2022-12-13 00:46:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:08,013 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:08,013 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 00:46:08,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1280792752, now seen corresponding path program 2 times [2022-12-13 00:46:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:08,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744372519] [2022-12-13 00:46:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:08,622 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 00:46:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:08,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744372519] [2022-12-13 00:46:08,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744372519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:08,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:46:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806804185] [2022-12-13 00:46:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:08,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:46:08,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:08,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:46:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:46:08,624 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 00:46:08,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 167 transitions, 2081 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:08,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:08,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 00:46:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:12,209 INFO L130 PetriNetUnfolder]: 28191/39848 cut-off events. [2022-12-13 00:46:12,209 INFO L131 PetriNetUnfolder]: For 205481/205481 co-relation queries the response was YES. [2022-12-13 00:46:12,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184237 conditions, 39848 events. 28191/39848 cut-off events. For 205481/205481 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 248431 event pairs, 5993 based on Foata normal form. 84/32986 useless extension candidates. Maximal degree in co-relation 184201. Up to 31513 conditions per place. [2022-12-13 00:46:12,725 INFO L137 encePairwiseOnDemand]: 30/41 looper letters, 175 selfloop transitions, 101 changer transitions 0/286 dead transitions. [2022-12-13 00:46:12,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 286 transitions, 3662 flow [2022-12-13 00:46:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:46:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:46:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2022-12-13 00:46:12,727 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2022-12-13 00:46:12,727 INFO L175 Difference]: Start difference. First operand has 91 places, 167 transitions, 2081 flow. Second operand 6 states and 167 transitions. [2022-12-13 00:46:12,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 286 transitions, 3662 flow [2022-12-13 00:46:12,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 286 transitions, 3524 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:13,000 INFO L231 Difference]: Finished difference. Result has 97 places, 222 transitions, 3111 flow [2022-12-13 00:46:13,000 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3111, PETRI_PLACES=97, PETRI_TRANSITIONS=222} [2022-12-13 00:46:13,000 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2022-12-13 00:46:13,001 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:13,001 INFO L89 Accepts]: Start accepts. Operand has 97 places, 222 transitions, 3111 flow [2022-12-13 00:46:13,002 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:13,002 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:13,002 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 222 transitions, 3111 flow [2022-12-13 00:46:13,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 222 transitions, 3111 flow [2022-12-13 00:46:13,214 INFO L130 PetriNetUnfolder]: 1149/2538 cut-off events. [2022-12-13 00:46:13,214 INFO L131 PetriNetUnfolder]: For 14228/17137 co-relation queries the response was YES. [2022-12-13 00:46:13,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14064 conditions, 2538 events. 1149/2538 cut-off events. For 14228/17137 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 20039 event pairs, 101 based on Foata normal form. 84/2086 useless extension candidates. Maximal degree in co-relation 14027. Up to 1423 conditions per place. [2022-12-13 00:46:13,246 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 222 transitions, 3111 flow [2022-12-13 00:46:13,247 INFO L226 LiptonReduction]: Number of co-enabled transitions 4252 [2022-12-13 00:46:14,251 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:46:14,253 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1252 [2022-12-13 00:46:14,253 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 222 transitions, 3151 flow [2022-12-13 00:46:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:14,253 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:14,253 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:14,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 00:46:14,254 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:14,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1052425387, now seen corresponding path program 1 times [2022-12-13 00:46:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033241681] [2022-12-13 00:46:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:14,699 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 00:46:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:14,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033241681] [2022-12-13 00:46:14,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033241681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:14,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:14,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:46:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564619386] [2022-12-13 00:46:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:46:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:46:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:46:14,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2022-12-13 00:46:14,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 222 transitions, 3151 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:14,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:14,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2022-12-13 00:46:14,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:18,663 INFO L130 PetriNetUnfolder]: 25835/37750 cut-off events. [2022-12-13 00:46:18,663 INFO L131 PetriNetUnfolder]: For 275853/278174 co-relation queries the response was YES. [2022-12-13 00:46:18,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190569 conditions, 37750 events. 25835/37750 cut-off events. For 275853/278174 co-relation queries the response was YES. Maximal size of possible extension queue 1882. Compared 261452 event pairs, 5379 based on Foata normal form. 990/31393 useless extension candidates. Maximal degree in co-relation 190529. Up to 25403 conditions per place. [2022-12-13 00:46:19,074 INFO L137 encePairwiseOnDemand]: 36/44 looper letters, 162 selfloop transitions, 69 changer transitions 0/274 dead transitions. [2022-12-13 00:46:19,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 274 transitions, 3958 flow [2022-12-13 00:46:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:46:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:46:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2022-12-13 00:46:19,076 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 00:46:19,076 INFO L175 Difference]: Start difference. First operand has 97 places, 222 transitions, 3151 flow. Second operand 5 states and 145 transitions. [2022-12-13 00:46:19,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 274 transitions, 3958 flow [2022-12-13 00:46:19,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 274 transitions, 3833 flow, removed 31 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:19,778 INFO L231 Difference]: Finished difference. Result has 100 places, 232 transitions, 3390 flow [2022-12-13 00:46:19,779 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3390, PETRI_PLACES=100, PETRI_TRANSITIONS=232} [2022-12-13 00:46:19,779 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-12-13 00:46:19,779 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:19,779 INFO L89 Accepts]: Start accepts. Operand has 100 places, 232 transitions, 3390 flow [2022-12-13 00:46:19,787 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:19,787 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:19,787 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 232 transitions, 3390 flow [2022-12-13 00:46:19,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 232 transitions, 3390 flow [2022-12-13 00:46:20,185 INFO L130 PetriNetUnfolder]: 1173/2650 cut-off events. [2022-12-13 00:46:20,185 INFO L131 PetriNetUnfolder]: For 16762/19508 co-relation queries the response was YES. [2022-12-13 00:46:20,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15107 conditions, 2650 events. 1173/2650 cut-off events. For 16762/19508 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 21626 event pairs, 130 based on Foata normal form. 112/2193 useless extension candidates. Maximal degree in co-relation 15068. Up to 1478 conditions per place. [2022-12-13 00:46:20,219 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 232 transitions, 3390 flow [2022-12-13 00:46:20,219 INFO L226 LiptonReduction]: Number of co-enabled transitions 4462 [2022-12-13 00:46:20,983 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:46:20,984 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1205 [2022-12-13 00:46:20,984 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 232 transitions, 3406 flow [2022-12-13 00:46:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:20,984 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:20,984 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 00:46:20,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:20,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1855191919, now seen corresponding path program 2 times [2022-12-13 00:46:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:20,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299225276] [2022-12-13 00:46:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:21,326 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 00:46:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299225276] [2022-12-13 00:46:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299225276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:21,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:21,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:46:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687123452] [2022-12-13 00:46:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:21,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:46:21,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:46:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:46:21,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2022-12-13 00:46:21,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 232 transitions, 3406 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:21,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:21,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2022-12-13 00:46:21,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:26,505 INFO L130 PetriNetUnfolder]: 29221/42967 cut-off events. [2022-12-13 00:46:26,505 INFO L131 PetriNetUnfolder]: For 388309/391915 co-relation queries the response was YES. [2022-12-13 00:46:26,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223115 conditions, 42967 events. 29221/42967 cut-off events. For 388309/391915 co-relation queries the response was YES. Maximal size of possible extension queue 2308. Compared 308721 event pairs, 6305 based on Foata normal form. 1217/35678 useless extension candidates. Maximal degree in co-relation 223073. Up to 23409 conditions per place. [2022-12-13 00:46:26,954 INFO L137 encePairwiseOnDemand]: 33/44 looper letters, 140 selfloop transitions, 119 changer transitions 0/302 dead transitions. [2022-12-13 00:46:26,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 302 transitions, 4427 flow [2022-12-13 00:46:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:46:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:46:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2022-12-13 00:46:26,958 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 00:46:26,958 INFO L175 Difference]: Start difference. First operand has 100 places, 232 transitions, 3406 flow. Second operand 6 states and 174 transitions. [2022-12-13 00:46:26,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 302 transitions, 4427 flow [2022-12-13 00:46:28,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 302 transitions, 4367 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-12-13 00:46:28,225 INFO L231 Difference]: Finished difference. Result has 107 places, 247 transitions, 3981 flow [2022-12-13 00:46:28,225 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3981, PETRI_PLACES=107, PETRI_TRANSITIONS=247} [2022-12-13 00:46:28,225 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 24 predicate places. [2022-12-13 00:46:28,226 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:28,226 INFO L89 Accepts]: Start accepts. Operand has 107 places, 247 transitions, 3981 flow [2022-12-13 00:46:28,227 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:28,227 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:28,227 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 247 transitions, 3981 flow [2022-12-13 00:46:28,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 247 transitions, 3981 flow [2022-12-13 00:46:28,482 INFO L130 PetriNetUnfolder]: 1282/2982 cut-off events. [2022-12-13 00:46:28,482 INFO L131 PetriNetUnfolder]: For 23511/25851 co-relation queries the response was YES. [2022-12-13 00:46:28,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2982 events. 1282/2982 cut-off events. For 23511/25851 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25619 event pairs, 152 based on Foata normal form. 106/2418 useless extension candidates. Maximal degree in co-relation 18006. Up to 1639 conditions per place. [2022-12-13 00:46:28,525 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 247 transitions, 3981 flow [2022-12-13 00:46:28,525 INFO L226 LiptonReduction]: Number of co-enabled transitions 4780 [2022-12-13 00:46:28,839 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:46:28,839 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 613 [2022-12-13 00:46:28,839 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 246 transitions, 3962 flow [2022-12-13 00:46:28,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:28,840 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:28,840 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:28,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 00:46:28,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1855271899, now seen corresponding path program 3 times [2022-12-13 00:46:28,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276908731] [2022-12-13 00:46:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:28,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:29,146 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 00:46:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276908731] [2022-12-13 00:46:29,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276908731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:29,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:29,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:46:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863251618] [2022-12-13 00:46:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:29,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:46:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:46:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:46:29,147 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2022-12-13 00:46:29,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 246 transitions, 3962 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:29,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:29,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2022-12-13 00:46:29,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:34,300 INFO L130 PetriNetUnfolder]: 29985/44189 cut-off events. [2022-12-13 00:46:34,300 INFO L131 PetriNetUnfolder]: For 470382/473427 co-relation queries the response was YES. [2022-12-13 00:46:34,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244746 conditions, 44189 events. 29985/44189 cut-off events. For 470382/473427 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 319813 event pairs, 7254 based on Foata normal form. 850/36139 useless extension candidates. Maximal degree in co-relation 244700. Up to 30805 conditions per place. [2022-12-13 00:46:34,788 INFO L137 encePairwiseOnDemand]: 33/41 looper letters, 181 selfloop transitions, 66 changer transitions 0/290 dead transitions. [2022-12-13 00:46:34,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 290 transitions, 4737 flow [2022-12-13 00:46:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:46:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:46:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2022-12-13 00:46:34,790 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2022-12-13 00:46:34,790 INFO L175 Difference]: Start difference. First operand has 107 places, 246 transitions, 3962 flow. Second operand 5 states and 140 transitions. [2022-12-13 00:46:34,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 290 transitions, 4737 flow [2022-12-13 00:46:36,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 290 transitions, 4591 flow, removed 26 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:36,247 INFO L231 Difference]: Finished difference. Result has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,248 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4120, PETRI_PLACES=110, PETRI_TRANSITIONS=252} [2022-12-13 00:46:36,248 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2022-12-13 00:46:36,248 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:36,248 INFO L89 Accepts]: Start accepts. Operand has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,249 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:36,249 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:36,250 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,513 INFO L130 PetriNetUnfolder]: 1296/3068 cut-off events. [2022-12-13 00:46:36,513 INFO L131 PetriNetUnfolder]: For 24334/26664 co-relation queries the response was YES. [2022-12-13 00:46:36,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18438 conditions, 3068 events. 1296/3068 cut-off events. For 24334/26664 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 26802 event pairs, 160 based on Foata normal form. 101/2467 useless extension candidates. Maximal degree in co-relation 18394. Up to 1669 conditions per place. [2022-12-13 00:46:36,556 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,556 INFO L226 LiptonReduction]: Number of co-enabled transitions 4874 [2022-12-13 00:46:36,566 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:36,567 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 319 [2022-12-13 00:46:36,567 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 252 transitions, 4120 flow [2022-12-13 00:46:36,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:36,567 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:36,568 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:36,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 00:46:36,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1859394589, now seen corresponding path program 4 times [2022-12-13 00:46:36,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:36,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484586979] [2022-12-13 00:46:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:36,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:37,256 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 00:46:37,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:37,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484586979] [2022-12-13 00:46:37,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484586979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:37,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:37,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:46:37,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034008136] [2022-12-13 00:46:37,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:46:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:37,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:46:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:46:37,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2022-12-13 00:46:37,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 252 transitions, 4120 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:37,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:37,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2022-12-13 00:46:37,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:43,447 INFO L130 PetriNetUnfolder]: 37819/53784 cut-off events. [2022-12-13 00:46:43,448 INFO L131 PetriNetUnfolder]: For 498255/498255 co-relation queries the response was YES. [2022-12-13 00:46:43,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288952 conditions, 53784 events. 37819/53784 cut-off events. For 498255/498255 co-relation queries the response was YES. Maximal size of possible extension queue 2258. Compared 358032 event pairs, 6971 based on Foata normal form. 180/44212 useless extension candidates. Maximal degree in co-relation 288905. Up to 37745 conditions per place. [2022-12-13 00:46:44,220 INFO L137 encePairwiseOnDemand]: 29/41 looper letters, 207 selfloop transitions, 124 changer transitions 0/341 dead transitions. [2022-12-13 00:46:44,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 341 transitions, 5388 flow [2022-12-13 00:46:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 00:46:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 00:46:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2022-12-13 00:46:44,221 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6794425087108014 [2022-12-13 00:46:44,221 INFO L175 Difference]: Start difference. First operand has 110 places, 252 transitions, 4120 flow. Second operand 7 states and 195 transitions. [2022-12-13 00:46:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 341 transitions, 5388 flow [2022-12-13 00:46:45,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 341 transitions, 5235 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-12-13 00:46:45,526 INFO L231 Difference]: Finished difference. Result has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,526 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4531, PETRI_PLACES=115, PETRI_TRANSITIONS=263} [2022-12-13 00:46:45,527 INFO L295 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2022-12-13 00:46:45,527 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:45,527 INFO L89 Accepts]: Start accepts. Operand has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,528 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:45,528 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:45,528 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,914 INFO L130 PetriNetUnfolder]: 1314/3140 cut-off events. [2022-12-13 00:46:45,914 INFO L131 PetriNetUnfolder]: For 26784/29360 co-relation queries the response was YES. [2022-12-13 00:46:45,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19288 conditions, 3140 events. 1314/3140 cut-off events. For 26784/29360 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 27832 event pairs, 164 based on Foata normal form. 102/2513 useless extension candidates. Maximal degree in co-relation 19242. Up to 1699 conditions per place. [2022-12-13 00:46:45,956 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,956 INFO L226 LiptonReduction]: Number of co-enabled transitions 5044 [2022-12-13 00:46:45,966 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:45,966 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 439 [2022-12-13 00:46:45,967 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 263 transitions, 4531 flow [2022-12-13 00:46:45,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:45,967 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:45,967 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 00:46:45,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:46:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1105905037, now seen corresponding path program 5 times [2022-12-13 00:46:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:45,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341413876] [2022-12-13 00:46:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:46,317 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 00:46:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:46,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341413876] [2022-12-13 00:46:46,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341413876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:46,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:46,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:46:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382809820] [2022-12-13 00:46:46,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:46,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:46:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:46:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:46:46,320 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2022-12-13 00:46:46,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 263 transitions, 4531 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 00:46:46,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:46,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2022-12-13 00:46:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:52,353 INFO L130 PetriNetUnfolder]: 35041/52303 cut-off events. [2022-12-13 00:46:52,354 INFO L131 PetriNetUnfolder]: For 617940/620920 co-relation queries the response was YES. [2022-12-13 00:46:52,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281088 conditions, 52303 events. 35041/52303 cut-off events. For 617940/620920 co-relation queries the response was YES. Maximal size of possible extension queue 2773. Compared 398034 event pairs, 6726 based on Foata normal form. 1375/42278 useless extension candidates. Maximal degree in co-relation 281039. Up to 22314 conditions per place. [2022-12-13 00:46:52,967 INFO L137 encePairwiseOnDemand]: 34/41 looper letters, 154 selfloop transitions, 103 changer transitions 0/302 dead transitions. [2022-12-13 00:46:52,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 302 transitions, 5374 flow [2022-12-13 00:46:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:46:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:46:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2022-12-13 00:46:52,969 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2022-12-13 00:46:52,969 INFO L175 Difference]: Start difference. First operand has 115 places, 263 transitions, 4531 flow. Second operand 5 states and 129 transitions. [2022-12-13 00:46:52,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 302 transitions, 5374 flow