/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/mix014_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 00:35:32,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 00:35:32,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 00:35:32,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 00:35:32,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 00:35:32,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 00:35:32,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 00:35:32,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 00:35:32,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 00:35:32,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 00:35:32,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 00:35:32,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 00:35:32,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 00:35:32,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 00:35:32,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 00:35:32,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 00:35:32,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 00:35:32,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 00:35:32,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 00:35:32,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 00:35:32,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 00:35:32,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 00:35:32,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 00:35:32,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 00:35:32,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 00:35:32,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 00:35:32,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 00:35:32,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 00:35:32,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 00:35:32,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 00:35:32,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 00:35:32,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 00:35:32,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 00:35:32,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 00:35:32,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 00:35:32,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 00:35:32,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 00:35:32,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 00:35:32,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 00:35:32,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 00:35:32,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 00:35:32,918 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 00:35:32,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 00:35:32,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 00:35:32,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 00:35:32,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 00:35:32,954 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 00:35:32,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 00:35:32,955 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 00:35:32,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 00:35:32,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 00:35:32,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 00:35:32,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 00:35:32,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 00:35:32,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 00:35:32,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:35:32,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 00:35:32,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 00:35:32,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 00:35:32,959 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 00:35:32,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 00:35:33,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 00:35:33,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 00:35:33,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 00:35:33,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 00:35:33,247 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 00:35:33,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:35:34,376 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 00:35:34,567 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 00:35:34,568 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:35:34,582 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e146ab3/5a1437b8dc604a93aa0b36971b3141d4/FLAG871cee078 [2022-12-13 00:35:34,594 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e146ab3/5a1437b8dc604a93aa0b36971b3141d4 [2022-12-13 00:35:34,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 00:35:34,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 00:35:34,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 00:35:34,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 00:35:34,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 00:35:34,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:35:34" (1/1) ... [2022-12-13 00:35:34,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f38f645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:34, skipping insertion in model container [2022-12-13 00:35:34,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:35:34" (1/1) ... [2022-12-13 00:35:34,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 00:35:34,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 00:35:34,823 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/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 00:35:34,991 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:34,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:34,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:34,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:34,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:35:35,073 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 00:35:35,085 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/mix014_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 00:35:35,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:35:35,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:35:35,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:35:35,181 INFO L208 MainTranslator]: Completed translation [2022-12-13 00:35:35,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35 WrapperNode [2022-12-13 00:35:35,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 00:35:35,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 00:35:35,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 00:35:35,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 00:35:35,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,238 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-12-13 00:35:35,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 00:35:35,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 00:35:35,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 00:35:35,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 00:35:35,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 00:35:35,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 00:35:35,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 00:35:35,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 00:35:35,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (1/1) ... [2022-12-13 00:35:35,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:35:35,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 00:35:35,296 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 00:35:35,305 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 00:35:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 00:35:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 00:35:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 00:35:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 00:35:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 00:35:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 00:35:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 00:35:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 00:35:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 00:35:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 00:35:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 00:35:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 00:35:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 00:35:35,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 00:35:35,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 00:35:35,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 00:35:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 00:35:35,334 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 00:35:35,474 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 00:35:35,486 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 00:35:35,754 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 00:35:35,949 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 00:35:35,950 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 00:35:35,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:35:35 BoogieIcfgContainer [2022-12-13 00:35:35,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 00:35:35,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 00:35:35,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 00:35:35,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 00:35:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:35:34" (1/3) ... [2022-12-13 00:35:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8dcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:35:35, skipping insertion in model container [2022-12-13 00:35:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:35:35" (2/3) ... [2022-12-13 00:35:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8dcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:35:35, skipping insertion in model container [2022-12-13 00:35:35,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:35:35" (3/3) ... [2022-12-13 00:35:35,962 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:35:35,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 00:35:35,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 00:35:35,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 00:35:36,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 00:35:36,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 286 flow [2022-12-13 00:35:36,158 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-13 00:35:36,159 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:35:36,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 00:35:36,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 133 transitions, 286 flow [2022-12-13 00:35:36,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 270 flow [2022-12-13 00:35:36,174 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:35:36,198 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-13 00:35:36,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 270 flow [2022-12-13 00:35:36,285 INFO L130 PetriNetUnfolder]: 2/129 cut-off events. [2022-12-13 00:35:36,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:35:36,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 00:35:36,291 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 270 flow [2022-12-13 00:35:36,292 INFO L226 LiptonReduction]: Number of co-enabled transitions 3300 [2022-12-13 00:35:42,709 INFO L241 LiptonReduction]: Total number of compositions: 100 [2022-12-13 00:35:42,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 00:35:42,727 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;@5cdd9c94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 00:35:42,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 00:35:42,729 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 00:35:42,730 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:35:42,730 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:35:42,730 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 00:35:42,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:35:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:35:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 626410, now seen corresponding path program 1 times [2022-12-13 00:35:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:35:42,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199992406] [2022-12-13 00:35:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:35:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:35:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:35:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:35:43,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:35:43,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199992406] [2022-12-13 00:35:43,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199992406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:35:43,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:35:43,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:35:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141715970] [2022-12-13 00:35:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:35:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:35:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:35:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:35:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:35:43,089 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 85 [2022-12-13 00:35:43,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:35:43,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:35:43,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 85 [2022-12-13 00:35:43,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:35:50,775 INFO L130 PetriNetUnfolder]: 66790/93294 cut-off events. [2022-12-13 00:35:50,776 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-12-13 00:35:51,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181583 conditions, 93294 events. 66790/93294 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 4361. Compared 669252 event pairs, 37024 based on Foata normal form. 0/59309 useless extension candidates. Maximal degree in co-relation 181571. Up to 73765 conditions per place. [2022-12-13 00:35:51,146 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 48 selfloop transitions, 2 changer transitions 71/138 dead transitions. [2022-12-13 00:35:51,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 138 transitions, 537 flow [2022-12-13 00:35:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:35:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:35:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2022-12-13 00:35:51,159 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7098039215686275 [2022-12-13 00:35:51,161 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 3 states and 181 transitions. [2022-12-13 00:35:51,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 138 transitions, 537 flow [2022-12-13 00:35:51,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 00:35:51,169 INFO L231 Difference]: Finished difference. Result has 92 places, 45 transitions, 102 flow [2022-12-13 00:35:51,171 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=92, PETRI_TRANSITIONS=45} [2022-12-13 00:35:51,176 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -5 predicate places. [2022-12-13 00:35:51,176 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:35:51,177 INFO L89 Accepts]: Start accepts. Operand has 92 places, 45 transitions, 102 flow [2022-12-13 00:35:51,181 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:35:51,181 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:35:51,181 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 45 transitions, 102 flow [2022-12-13 00:35:51,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 45 transitions, 102 flow [2022-12-13 00:35:51,202 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-12-13 00:35:51,202 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:35:51,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 00:35:51,206 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 45 transitions, 102 flow [2022-12-13 00:35:51,206 INFO L226 LiptonReduction]: Number of co-enabled transitions 1224 [2022-12-13 00:35:51,383 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:35:51,385 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 209 [2022-12-13 00:35:51,385 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2022-12-13 00:35:51,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:35:51,386 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:35:51,386 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:35:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 00:35:51,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:35:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:35:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2467031, now seen corresponding path program 1 times [2022-12-13 00:35:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:35:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582472234] [2022-12-13 00:35:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:35:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:35:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:35:51,662 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 00:35:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:35:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582472234] [2022-12-13 00:35:51,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582472234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:35:51,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:35:51,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:35:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028117018] [2022-12-13 00:35:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:35:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:35:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:35:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:35:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:35:51,665 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2022-12-13 00:35:51,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:35:51,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:35:51,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2022-12-13 00:35:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:35:56,153 INFO L130 PetriNetUnfolder]: 47011/65442 cut-off events. [2022-12-13 00:35:56,153 INFO L131 PetriNetUnfolder]: For 1565/1565 co-relation queries the response was YES. [2022-12-13 00:35:56,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130558 conditions, 65442 events. 47011/65442 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 1999. Compared 421067 event pairs, 17523 based on Foata normal form. 0/53664 useless extension candidates. Maximal degree in co-relation 130548. Up to 42107 conditions per place. [2022-12-13 00:35:56,688 INFO L137 encePairwiseOnDemand]: 36/45 looper letters, 53 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2022-12-13 00:35:56,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 292 flow [2022-12-13 00:35:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:35:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:35:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-13 00:35:56,693 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-12-13 00:35:56,693 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2022-12-13 00:35:56,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 292 flow [2022-12-13 00:35:56,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:35:56,695 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 158 flow [2022-12-13 00:35:56,695 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2022-12-13 00:35:56,696 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -39 predicate places. [2022-12-13 00:35:56,696 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:35:56,696 INFO L89 Accepts]: Start accepts. Operand has 58 places, 51 transitions, 158 flow [2022-12-13 00:35:56,698 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:35:56,698 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:35:56,698 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 51 transitions, 158 flow [2022-12-13 00:35:56,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 158 flow [2022-12-13 00:35:56,752 INFO L130 PetriNetUnfolder]: 218/765 cut-off events. [2022-12-13 00:35:56,753 INFO L131 PetriNetUnfolder]: For 53/71 co-relation queries the response was YES. [2022-12-13 00:35:56,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 765 events. 218/765 cut-off events. For 53/71 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6034 event pairs, 118 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 1264. Up to 311 conditions per place. [2022-12-13 00:35:56,763 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 51 transitions, 158 flow [2022-12-13 00:35:56,763 INFO L226 LiptonReduction]: Number of co-enabled transitions 1414 [2022-12-13 00:35:56,829 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:35:56,830 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 134 [2022-12-13 00:35:56,832 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 158 flow [2022-12-13 00:35:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:35:56,837 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:35:56,837 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:35:56,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 00:35:56,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:35:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:35:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash 76478667, now seen corresponding path program 1 times [2022-12-13 00:35:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:35:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028390939] [2022-12-13 00:35:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:35:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:35:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:35:57,045 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 00:35:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:35:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028390939] [2022-12-13 00:35:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028390939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:35:57,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:35:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:35:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414636433] [2022-12-13 00:35:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:35:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:35:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:35:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:35:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:35:57,051 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 00:35:57,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:35:57,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:35:57,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 00:35:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:35:59,886 INFO L130 PetriNetUnfolder]: 34769/48784 cut-off events. [2022-12-13 00:35:59,886 INFO L131 PetriNetUnfolder]: For 16644/16644 co-relation queries the response was YES. [2022-12-13 00:36:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113930 conditions, 48784 events. 34769/48784 cut-off events. For 16644/16644 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 297301 event pairs, 8929 based on Foata normal form. 480/41560 useless extension candidates. Maximal degree in co-relation 113918. Up to 23601 conditions per place. [2022-12-13 00:36:00,296 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 68 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2022-12-13 00:36:00,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 414 flow [2022-12-13 00:36:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:36:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:36:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 00:36:00,298 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 00:36:00,298 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 158 flow. Second operand 4 states and 116 transitions. [2022-12-13 00:36:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 414 flow [2022-12-13 00:36:00,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:36:00,444 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,445 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-12-13 00:36:00,445 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -36 predicate places. [2022-12-13 00:36:00,445 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:00,446 INFO L89 Accepts]: Start accepts. Operand has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,446 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:00,446 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:00,447 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,479 INFO L130 PetriNetUnfolder]: 173/599 cut-off events. [2022-12-13 00:36:00,479 INFO L131 PetriNetUnfolder]: For 196/241 co-relation queries the response was YES. [2022-12-13 00:36:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 599 events. 173/599 cut-off events. For 196/241 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4287 event pairs, 76 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1167. Up to 252 conditions per place. [2022-12-13 00:36:00,485 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,485 INFO L226 LiptonReduction]: Number of co-enabled transitions 1540 [2022-12-13 00:36:00,501 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:00,502 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 57 [2022-12-13 00:36:00,502 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 210 flow [2022-12-13 00:36:00,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:00,503 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:00,503 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 00:36:00,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1915486415, now seen corresponding path program 1 times [2022-12-13 00:36:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368295913] [2022-12-13 00:36:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:00,649 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 00:36:00,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:00,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368295913] [2022-12-13 00:36:00,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368295913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:00,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:00,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:36:00,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616600271] [2022-12-13 00:36:00,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:00,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:36:00,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:36:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:36:00,651 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 00:36:00,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:00,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:00,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 00:36:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:04,228 INFO L130 PetriNetUnfolder]: 34265/48313 cut-off events. [2022-12-13 00:36:04,228 INFO L131 PetriNetUnfolder]: For 29564/29564 co-relation queries the response was YES. [2022-12-13 00:36:04,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118722 conditions, 48313 events. 34265/48313 cut-off events. For 29564/29564 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 306592 event pairs, 9147 based on Foata normal form. 60/40765 useless extension candidates. Maximal degree in co-relation 118707. Up to 30193 conditions per place. [2022-12-13 00:36:04,511 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 73 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2022-12-13 00:36:04,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 530 flow [2022-12-13 00:36:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:36:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:36:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2022-12-13 00:36:04,513 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7159090909090909 [2022-12-13 00:36:04,513 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 210 flow. Second operand 4 states and 126 transitions. [2022-12-13 00:36:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 530 flow [2022-12-13 00:36:04,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:36:04,545 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,545 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2022-12-13 00:36:04,546 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -32 predicate places. [2022-12-13 00:36:04,546 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:04,546 INFO L89 Accepts]: Start accepts. Operand has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,547 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:04,547 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:04,547 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,584 INFO L130 PetriNetUnfolder]: 157/559 cut-off events. [2022-12-13 00:36:04,584 INFO L131 PetriNetUnfolder]: For 439/523 co-relation queries the response was YES. [2022-12-13 00:36:04,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 559 events. 157/559 cut-off events. For 439/523 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3930 event pairs, 74 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 1300. Up to 232 conditions per place. [2022-12-13 00:36:04,590 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,590 INFO L226 LiptonReduction]: Number of co-enabled transitions 1682 [2022-12-13 00:36:04,619 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:04,625 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 79 [2022-12-13 00:36:04,625 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 309 flow [2022-12-13 00:36:04,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:04,625 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:04,625 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:04,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 00:36:04,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:04,626 INFO L85 PathProgramCache]: Analyzing trace with hash 749631385, now seen corresponding path program 1 times [2022-12-13 00:36:04,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:04,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121029268] [2022-12-13 00:36:04,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:04,937 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 00:36:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:04,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121029268] [2022-12-13 00:36:04,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121029268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:04,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:04,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:36:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135677960] [2022-12-13 00:36:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:36:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:36:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:36:04,939 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 00:36:04,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:04,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:04,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 00:36:04,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:08,176 INFO L130 PetriNetUnfolder]: 32949/46469 cut-off events. [2022-12-13 00:36:08,176 INFO L131 PetriNetUnfolder]: For 48802/48802 co-relation queries the response was YES. [2022-12-13 00:36:08,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124147 conditions, 46469 events. 32949/46469 cut-off events. For 48802/48802 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 295919 event pairs, 6055 based on Foata normal form. 300/39405 useless extension candidates. Maximal degree in co-relation 124129. Up to 22961 conditions per place. [2022-12-13 00:36:08,542 INFO L137 encePairwiseOnDemand]: 36/44 looper letters, 86 selfloop transitions, 12 changer transitions 0/109 dead transitions. [2022-12-13 00:36:08,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 665 flow [2022-12-13 00:36:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:36:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:36:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2022-12-13 00:36:08,543 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2022-12-13 00:36:08,543 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 309 flow. Second operand 4 states and 124 transitions. [2022-12-13 00:36:08,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 665 flow [2022-12-13 00:36:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 665 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:36:08,751 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,751 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2022-12-13 00:36:08,752 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -26 predicate places. [2022-12-13 00:36:08,752 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:08,752 INFO L89 Accepts]: Start accepts. Operand has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,754 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:08,754 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:08,754 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,782 INFO L130 PetriNetUnfolder]: 125/499 cut-off events. [2022-12-13 00:36:08,782 INFO L131 PetriNetUnfolder]: For 719/839 co-relation queries the response was YES. [2022-12-13 00:36:08,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 499 events. 125/499 cut-off events. For 719/839 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3527 event pairs, 57 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 1296. Up to 188 conditions per place. [2022-12-13 00:36:08,787 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,788 INFO L226 LiptonReduction]: Number of co-enabled transitions 1838 [2022-12-13 00:36:08,793 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:08,794 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 42 [2022-12-13 00:36:08,794 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 432 flow [2022-12-13 00:36:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:08,794 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:08,794 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 00:36:08,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 466622892, now seen corresponding path program 1 times [2022-12-13 00:36:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:08,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99512398] [2022-12-13 00:36:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:08,903 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 00:36:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:08,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99512398] [2022-12-13 00:36:08,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99512398] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:08,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:08,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:36:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910136581] [2022-12-13 00:36:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:36:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:36:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:36:08,905 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 00:36:08,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:08,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:08,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 00:36:08,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:13,089 INFO L130 PetriNetUnfolder]: 42743/59853 cut-off events. [2022-12-13 00:36:13,089 INFO L131 PetriNetUnfolder]: For 51865/53978 co-relation queries the response was YES. [2022-12-13 00:36:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145104 conditions, 59853 events. 42743/59853 cut-off events. For 51865/53978 co-relation queries the response was YES. Maximal size of possible extension queue 2344. Compared 392399 event pairs, 13107 based on Foata normal form. 800/41194 useless extension candidates. Maximal degree in co-relation 145081. Up to 57472 conditions per place. [2022-12-13 00:36:13,438 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 57 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2022-12-13 00:36:13,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 693 flow [2022-12-13 00:36:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:36:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:36:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2022-12-13 00:36:13,439 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2022-12-13 00:36:13,439 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 432 flow. Second operand 3 states and 96 transitions. [2022-12-13 00:36:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 693 flow [2022-12-13 00:36:13,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 687 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 00:36:13,484 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:13,484 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2022-12-13 00:36:13,485 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -24 predicate places. [2022-12-13 00:36:13,485 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:13,485 INFO L89 Accepts]: Start accepts. Operand has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:13,486 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:13,486 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:13,486 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:14,144 INFO L130 PetriNetUnfolder]: 6992/11969 cut-off events. [2022-12-13 00:36:14,144 INFO L131 PetriNetUnfolder]: For 3044/3233 co-relation queries the response was YES. [2022-12-13 00:36:14,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24925 conditions, 11969 events. 6992/11969 cut-off events. For 3044/3233 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 107168 event pairs, 3992 based on Foata normal form. 3/5842 useless extension candidates. Maximal degree in co-relation 24903. Up to 9787 conditions per place. [2022-12-13 00:36:14,251 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:14,251 INFO L226 LiptonReduction]: Number of co-enabled transitions 2368 [2022-12-13 00:36:14,413 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:14,414 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 929 [2022-12-13 00:36:14,414 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 515 flow [2022-12-13 00:36:14,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:36:14,414 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:14,414 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:14,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 00:36:14,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 806606976, now seen corresponding path program 1 times [2022-12-13 00:36:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:14,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074669039] [2022-12-13 00:36:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:14,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:14,636 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 00:36:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:14,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074669039] [2022-12-13 00:36:14,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074669039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:14,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:14,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:36:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907918423] [2022-12-13 00:36:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:36:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:36:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:36:14,638 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 00:36:14,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 515 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 00:36:14,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:14,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 00:36:14,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:17,699 INFO L130 PetriNetUnfolder]: 27350/40722 cut-off events. [2022-12-13 00:36:17,700 INFO L131 PetriNetUnfolder]: For 31639/32888 co-relation queries the response was YES. [2022-12-13 00:36:17,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121244 conditions, 40722 events. 27350/40722 cut-off events. For 31639/32888 co-relation queries the response was YES. Maximal size of possible extension queue 1774. Compared 288028 event pairs, 4563 based on Foata normal form. 1663/29468 useless extension candidates. Maximal degree in co-relation 121219. Up to 33076 conditions per place. [2022-12-13 00:36:17,924 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 75 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2022-12-13 00:36:17,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 130 transitions, 951 flow [2022-12-13 00:36:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:36:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:36:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2022-12-13 00:36:17,925 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2022-12-13 00:36:17,926 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 515 flow. Second operand 4 states and 133 transitions. [2022-12-13 00:36:17,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 130 transitions, 951 flow [2022-12-13 00:36:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 938 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:36:17,947 INFO L231 Difference]: Finished difference. Result has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:17,947 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=650, PETRI_PLACES=76, PETRI_TRANSITIONS=92} [2022-12-13 00:36:17,948 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -21 predicate places. [2022-12-13 00:36:17,948 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:17,948 INFO L89 Accepts]: Start accepts. Operand has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:17,949 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:17,949 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:17,950 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:18,389 INFO L130 PetriNetUnfolder]: 5120/9545 cut-off events. [2022-12-13 00:36:18,390 INFO L131 PetriNetUnfolder]: For 3230/4883 co-relation queries the response was YES. [2022-12-13 00:36:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28563 conditions, 9545 events. 5120/9545 cut-off events. For 3230/4883 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 87026 event pairs, 1490 based on Foata normal form. 40/4858 useless extension candidates. Maximal degree in co-relation 28539. Up to 7783 conditions per place. [2022-12-13 00:36:18,493 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:18,493 INFO L226 LiptonReduction]: Number of co-enabled transitions 2866 [2022-12-13 00:36:18,602 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:18,603 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 655 [2022-12-13 00:36:18,603 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 92 transitions, 650 flow [2022-12-13 00:36:18,603 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 00:36:18,603 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:18,603 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:18,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 00:36:18,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2049302141, now seen corresponding path program 1 times [2022-12-13 00:36:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:18,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438559833] [2022-12-13 00:36:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:18,813 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 00:36:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438559833] [2022-12-13 00:36:18,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438559833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:18,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:18,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:36:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033475998] [2022-12-13 00:36:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:36:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:36:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:36:18,815 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 00:36:18,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 00:36:18,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:18,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 00:36:18,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:24,170 INFO L130 PetriNetUnfolder]: 46151/68233 cut-off events. [2022-12-13 00:36:24,170 INFO L131 PetriNetUnfolder]: For 138002/146587 co-relation queries the response was YES. [2022-12-13 00:36:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256510 conditions, 68233 events. 46151/68233 cut-off events. For 138002/146587 co-relation queries the response was YES. Maximal size of possible extension queue 2993. Compared 507611 event pairs, 6729 based on Foata normal form. 2782/58986 useless extension candidates. Maximal degree in co-relation 256483. Up to 35404 conditions per place. [2022-12-13 00:36:24,719 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 184 selfloop transitions, 44 changer transitions 4/251 dead transitions. [2022-12-13 00:36:24,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 251 transitions, 2143 flow [2022-12-13 00:36:24,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:36:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:36:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2022-12-13 00:36:24,720 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7310606060606061 [2022-12-13 00:36:24,720 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 650 flow. Second operand 6 states and 193 transitions. [2022-12-13 00:36:24,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 251 transitions, 2143 flow [2022-12-13 00:36:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 251 transitions, 1981 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-12-13 00:36:24,881 INFO L231 Difference]: Finished difference. Result has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:24,881 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1055, PETRI_PLACES=82, PETRI_TRANSITIONS=117} [2022-12-13 00:36:24,882 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -15 predicate places. [2022-12-13 00:36:24,882 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:24,882 INFO L89 Accepts]: Start accepts. Operand has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:24,886 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:24,886 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:24,886 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:24,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:25,691 INFO L130 PetriNetUnfolder]: 8778/15691 cut-off events. [2022-12-13 00:36:25,691 INFO L131 PetriNetUnfolder]: For 8578/9633 co-relation queries the response was YES. [2022-12-13 00:36:25,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44839 conditions, 15691 events. 8778/15691 cut-off events. For 8578/9633 co-relation queries the response was YES. Maximal size of possible extension queue 2052. Compared 147001 event pairs, 2421 based on Foata normal form. 62/7584 useless extension candidates. Maximal degree in co-relation 44812. Up to 13285 conditions per place. [2022-12-13 00:36:25,827 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:25,827 INFO L226 LiptonReduction]: Number of co-enabled transitions 3678 [2022-12-13 00:36:25,984 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:25,985 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1103 [2022-12-13 00:36:25,985 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 117 transitions, 1055 flow [2022-12-13 00:36:25,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 00:36:25,985 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:25,985 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 00:36:25,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 531461207, now seen corresponding path program 1 times [2022-12-13 00:36:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:25,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650512330] [2022-12-13 00:36:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:26,176 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 00:36:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650512330] [2022-12-13 00:36:26,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650512330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:26,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:26,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:36:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342307718] [2022-12-13 00:36:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:26,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:36:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:36:26,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:36:26,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2022-12-13 00:36:26,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 117 transitions, 1055 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 00:36:26,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:26,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2022-12-13 00:36:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:29,169 INFO L130 PetriNetUnfolder]: 24588/38457 cut-off events. [2022-12-13 00:36:29,169 INFO L131 PetriNetUnfolder]: For 45807/46473 co-relation queries the response was YES. [2022-12-13 00:36:29,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128621 conditions, 38457 events. 24588/38457 cut-off events. For 45807/46473 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 293423 event pairs, 1962 based on Foata normal form. 2891/27972 useless extension candidates. Maximal degree in co-relation 128591. Up to 18433 conditions per place. [2022-12-13 00:36:29,386 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 103 selfloop transitions, 37 changer transitions 4/192 dead transitions. [2022-12-13 00:36:29,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 192 transitions, 1860 flow [2022-12-13 00:36:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:36:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:36:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2022-12-13 00:36:29,387 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2022-12-13 00:36:29,387 INFO L175 Difference]: Start difference. First operand has 82 places, 117 transitions, 1055 flow. Second operand 5 states and 168 transitions. [2022-12-13 00:36:29,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 192 transitions, 1860 flow [2022-12-13 00:36:29,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 192 transitions, 1860 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:36:29,428 INFO L231 Difference]: Finished difference. Result has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:29,429 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1234, PETRI_PLACES=87, PETRI_TRANSITIONS=128} [2022-12-13 00:36:29,429 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, -10 predicate places. [2022-12-13 00:36:29,429 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:29,429 INFO L89 Accepts]: Start accepts. Operand has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:29,431 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:29,431 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:29,431 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:29,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:30,170 INFO L130 PetriNetUnfolder]: 5176/10713 cut-off events. [2022-12-13 00:36:30,171 INFO L131 PetriNetUnfolder]: For 7333/9567 co-relation queries the response was YES. [2022-12-13 00:36:30,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40394 conditions, 10713 events. 5176/10713 cut-off events. For 7333/9567 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 107856 event pairs, 503 based on Foata normal form. 63/5560 useless extension candidates. Maximal degree in co-relation 40364. Up to 8344 conditions per place. [2022-12-13 00:36:30,269 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:30,269 INFO L226 LiptonReduction]: Number of co-enabled transitions 3556 [2022-12-13 00:36:30,359 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:36:30,360 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 931 [2022-12-13 00:36:30,360 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 128 transitions, 1234 flow [2022-12-13 00:36:30,360 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 00:36:30,360 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:30,360 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:30,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 00:36:30,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash 690369286, now seen corresponding path program 1 times [2022-12-13 00:36:30,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:30,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215621508] [2022-12-13 00:36:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:30,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:31,216 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 00:36:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:31,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215621508] [2022-12-13 00:36:31,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215621508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:31,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:31,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 00:36:31,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593147888] [2022-12-13 00:36:31,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:31,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 00:36:31,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:31,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 00:36:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 00:36:31,219 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 00:36:31,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 128 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 00:36:31,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:31,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 00:36:31,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:36:36,190 INFO L130 PetriNetUnfolder]: 36313/56364 cut-off events. [2022-12-13 00:36:36,191 INFO L131 PetriNetUnfolder]: For 171607/180837 co-relation queries the response was YES. [2022-12-13 00:36:36,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241977 conditions, 56364 events. 36313/56364 cut-off events. For 171607/180837 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 442763 event pairs, 3544 based on Foata normal form. 4237/50028 useless extension candidates. Maximal degree in co-relation 241944. Up to 26808 conditions per place. [2022-12-13 00:36:36,739 INFO L137 encePairwiseOnDemand]: 30/44 looper letters, 224 selfloop transitions, 129 changer transitions 7/383 dead transitions. [2022-12-13 00:36:36,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 383 transitions, 4063 flow [2022-12-13 00:36:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 00:36:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 00:36:36,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2022-12-13 00:36:36,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2022-12-13 00:36:36,741 INFO L175 Difference]: Start difference. First operand has 87 places, 128 transitions, 1234 flow. Second operand 9 states and 276 transitions. [2022-12-13 00:36:36,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 383 transitions, 4063 flow [2022-12-13 00:36:39,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 383 transitions, 3781 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-12-13 00:36:39,926 INFO L231 Difference]: Finished difference. Result has 98 places, 216 transitions, 2756 flow [2022-12-13 00:36:39,926 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2756, PETRI_PLACES=98, PETRI_TRANSITIONS=216} [2022-12-13 00:36:39,926 INFO L295 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2022-12-13 00:36:39,926 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:36:39,926 INFO L89 Accepts]: Start accepts. Operand has 98 places, 216 transitions, 2756 flow [2022-12-13 00:36:39,928 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:36:39,928 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:36:39,928 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 216 transitions, 2756 flow [2022-12-13 00:36:39,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 216 transitions, 2756 flow [2022-12-13 00:36:41,282 INFO L130 PetriNetUnfolder]: 13792/24229 cut-off events. [2022-12-13 00:36:41,282 INFO L131 PetriNetUnfolder]: For 32952/36537 co-relation queries the response was YES. [2022-12-13 00:36:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78791 conditions, 24229 events. 13792/24229 cut-off events. For 32952/36537 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 225979 event pairs, 641 based on Foata normal form. 284/11894 useless extension candidates. Maximal degree in co-relation 78755. Up to 14554 conditions per place. [2022-12-13 00:36:41,716 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 216 transitions, 2756 flow [2022-12-13 00:36:41,717 INFO L226 LiptonReduction]: Number of co-enabled transitions 5692 [2022-12-13 00:36:42,451 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:36:42,452 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2526 [2022-12-13 00:36:42,452 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 216 transitions, 2768 flow [2022-12-13 00:36:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 00:36:42,452 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:36:42,452 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:36:42,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 00:36:42,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:36:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:36:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1658344044, now seen corresponding path program 1 times [2022-12-13 00:36:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:36:42,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583478868] [2022-12-13 00:36:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:36:42,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:36:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:36:42,805 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 00:36:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:36:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583478868] [2022-12-13 00:36:42,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583478868] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:36:42,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:36:42,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:36:42,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049347163] [2022-12-13 00:36:42,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:36:42,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:36:42,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:36:42,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:36:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:36:42,807 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2022-12-13 00:36:42,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 216 transitions, 2768 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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 00:36:42,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:36:42,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2022-12-13 00:36:42,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand