/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 09:27:30,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:27:30,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:27:30,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:27:30,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:27:30,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:27:30,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:27:30,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:27:30,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:27:30,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:27:30,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:27:30,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:27:30,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:27:30,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:27:30,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:27:30,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:27:30,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:27:30,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:27:30,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:27:30,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:27:30,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:27:30,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:27:30,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:27:30,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:27:30,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:27:30,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:27:30,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:27:30,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:27:30,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:27:30,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:27:30,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:27:30,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:27:30,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:27:30,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:27:30,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:27:30,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:27:30,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:27:30,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:27:30,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:27:30,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:27:30,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:27:30,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 09:27:30,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:27:30,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:27:30,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:27:30,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:27:30,701 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:27:30,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:27:30,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:27:30,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:27:30,714 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:27:30,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:27:30,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:27:30,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:27:30,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:27:30,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:27:30,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 09:27:30,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:27:30,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:27:30,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:27:30,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:27:30,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:27:30,716 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 09:27:30,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:27:30,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:27:30,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 09:27:30,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 09:27:31,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:27:31,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:27:31,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:27:31,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:27:31,024 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:27:31,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:27:32,104 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:27:32,366 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:27:32,366 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:27:32,377 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50bcb3f61/f7a81d90d6f745caa62b20aedb752f6e/FLAG221945269 [2022-12-13 09:27:32,393 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50bcb3f61/f7a81d90d6f745caa62b20aedb752f6e [2022-12-13 09:27:32,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:27:32,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 09:27:32,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:27:32,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:27:32,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:27:32,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:27:32" (1/1) ... [2022-12-13 09:27:32,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3657ffde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:32, skipping insertion in model container [2022-12-13 09:27:32,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:27:32" (1/1) ... [2022-12-13 09:27:32,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:27:32,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:27:32,639 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 09:27:32,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:27:32,897 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:27:32,908 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/mix047_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 09:27:32,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,936 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:27:32,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:27:32,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:27:33,008 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:27:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33 WrapperNode [2022-12-13 09:27:33,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:27:33,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:27:33,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:27:33,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:27:33,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,091 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-12-13 09:27:33,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:27:33,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:27:33,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:27:33,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:27:33,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:27:33,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:27:33,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:27:33,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:27:33,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (1/1) ... [2022-12-13 09:27:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:27:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 09:27:33,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 09:27:33,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:27:33,204 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 09:27:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 09:27:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 09:27:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 09:27:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 09:27:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 09:27:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 09:27:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 09:27:33,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:27:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 09:27:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:27:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:27:33,207 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 09:27:33,355 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 09:27:33,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:27:33,754 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 09:27:33,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:27:33,856 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 09:27:33,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:27:33 BoogieIcfgContainer [2022-12-13 09:27:33,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:27:33,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:27:33,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:27:33,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:27:33,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:27:32" (1/3) ... [2022-12-13 09:27:33,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387929d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:27:33, skipping insertion in model container [2022-12-13 09:27:33,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:27:33" (2/3) ... [2022-12-13 09:27:33,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387929d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:27:33, skipping insertion in model container [2022-12-13 09:27:33,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:27:33" (3/3) ... [2022-12-13 09:27:33,865 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 09:27:33,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:27:33,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 09:27:33,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:27:33,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 09:27:33,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 09:27:34,046 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 09:27:34,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:27:34,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 09:27:34,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 09:27:34,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 266 flow [2022-12-13 09:27:34,061 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:27:34,073 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 09:27:34,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 266 flow [2022-12-13 09:27:34,113 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 09:27:34,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:27:34,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 09:27:34,118 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 09:27:34,118 INFO L226 LiptonReduction]: Number of co-enabled transitions 3270 [2022-12-13 09:27:39,852 INFO L241 LiptonReduction]: Total number of compositions: 102 [2022-12-13 09:27:39,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 09:27:39,872 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;@13624f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:27:39,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 09:27:39,875 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 09:27:39,875 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:27:39,875 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:27:39,876 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 09:27:39,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:27:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:27:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash 572500, now seen corresponding path program 1 times [2022-12-13 09:27:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:27:39,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834490376] [2022-12-13 09:27:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:27:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:27:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:27:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:27:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:27:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834490376] [2022-12-13 09:27:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834490376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:27:40,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:27:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:27:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403689225] [2022-12-13 09:27:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:27:40,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:27:40,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:27:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:27:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:27:40,305 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2022-12-13 09:27:40,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:27:40,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:27:40,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2022-12-13 09:27:40,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:27:50,139 INFO L130 PetriNetUnfolder]: 89490/129391 cut-off events. [2022-12-13 09:27:50,140 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2022-12-13 09:27:50,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247130 conditions, 129391 events. 89490/129391 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 5901. Compared 1062831 event pairs, 13430 based on Foata normal form. 0/82283 useless extension candidates. Maximal degree in co-relation 247118. Up to 98405 conditions per place. [2022-12-13 09:27:50,577 INFO L137 encePairwiseOnDemand]: 79/83 looper letters, 52 selfloop transitions, 2 changer transitions 71/140 dead transitions. [2022-12-13 09:27:50,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 549 flow [2022-12-13 09:27:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:27:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:27:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2022-12-13 09:27:50,592 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2022-12-13 09:27:50,594 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 178 flow. Second operand 3 states and 175 transitions. [2022-12-13 09:27:50,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 549 flow [2022-12-13 09:27:50,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 542 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 09:27:50,605 INFO L231 Difference]: Finished difference. Result has 92 places, 45 transitions, 102 flow [2022-12-13 09:27:50,607 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=92, PETRI_TRANSITIONS=45} [2022-12-13 09:27:50,611 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -4 predicate places. [2022-12-13 09:27:50,612 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:27:50,613 INFO L89 Accepts]: Start accepts. Operand has 92 places, 45 transitions, 102 flow [2022-12-13 09:27:50,618 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:27:50,618 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:27:50,618 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 45 transitions, 102 flow [2022-12-13 09:27:50,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 45 transitions, 102 flow [2022-12-13 09:27:50,639 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-12-13 09:27:50,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:27:50,640 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 123 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 09:27:50,645 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 45 transitions, 102 flow [2022-12-13 09:27:50,645 INFO L226 LiptonReduction]: Number of co-enabled transitions 1210 [2022-12-13 09:27:50,882 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:27:50,885 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 273 [2022-12-13 09:27:50,885 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2022-12-13 09:27:50,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:27:50,885 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:27:50,885 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:27:50,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:27:50,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:27:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:27:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1165077413, now seen corresponding path program 1 times [2022-12-13 09:27:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:27:50,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208733175] [2022-12-13 09:27:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:27:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:27:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:27:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:27:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:27:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208733175] [2022-12-13 09:27:51,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208733175] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:27:51,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:27:51,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:27:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111400129] [2022-12-13 09:27:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:27:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:27:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:27:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:27:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:27:51,107 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2022-12-13 09:27:51,107 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 09:27:51,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:27:51,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2022-12-13 09:27:51,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:27:55,581 INFO L130 PetriNetUnfolder]: 50411/69517 cut-off events. [2022-12-13 09:27:55,581 INFO L131 PetriNetUnfolder]: For 2700/2700 co-relation queries the response was YES. [2022-12-13 09:27:55,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140138 conditions, 69517 events. 50411/69517 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 438052 event pairs, 19725 based on Foata normal form. 0/55941 useless extension candidates. Maximal degree in co-relation 140128. Up to 35173 conditions per place. [2022-12-13 09:27:56,191 INFO L137 encePairwiseOnDemand]: 34/45 looper letters, 51 selfloop transitions, 10 changer transitions 2/74 dead transitions. [2022-12-13 09:27:56,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 292 flow [2022-12-13 09:27:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:27:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:27:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2022-12-13 09:27:56,197 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-12-13 09:27:56,197 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2022-12-13 09:27:56,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 292 flow [2022-12-13 09:27:56,199 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 09:27:56,200 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 174 flow [2022-12-13 09:27:56,200 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=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 09:27:56,201 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2022-12-13 09:27:56,201 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:27:56,201 INFO L89 Accepts]: Start accepts. Operand has 58 places, 53 transitions, 174 flow [2022-12-13 09:27:56,203 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:27:56,203 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:27:56,203 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 53 transitions, 174 flow [2022-12-13 09:27:56,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 174 flow [2022-12-13 09:27:56,297 INFO L130 PetriNetUnfolder]: 520/1541 cut-off events. [2022-12-13 09:27:56,297 INFO L131 PetriNetUnfolder]: For 154/175 co-relation queries the response was YES. [2022-12-13 09:27:56,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2771 conditions, 1541 events. 520/1541 cut-off events. For 154/175 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 13725 event pairs, 212 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2762. Up to 491 conditions per place. [2022-12-13 09:27:56,315 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 53 transitions, 174 flow [2022-12-13 09:27:56,316 INFO L226 LiptonReduction]: Number of co-enabled transitions 1458 [2022-12-13 09:27:56,389 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:27:56,391 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 190 [2022-12-13 09:27:56,391 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 174 flow [2022-12-13 09:27:56,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:27:56,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:27:56,399 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:27:56,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:27:56,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:27:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:27:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1757661410, now seen corresponding path program 1 times [2022-12-13 09:27:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:27:56,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765282666] [2022-12-13 09:27:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:27:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:27:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:27:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:27:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:27:56,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765282666] [2022-12-13 09:27:56,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765282666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:27:56,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:27:56,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:27:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647822766] [2022-12-13 09:27:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:27:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:27:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:27:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:27:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:27:56,621 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 09:27:56,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:27:56,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:27:56,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 09:27:56,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:27:59,814 INFO L130 PetriNetUnfolder]: 36514/51318 cut-off events. [2022-12-13 09:27:59,814 INFO L131 PetriNetUnfolder]: For 21463/21463 co-relation queries the response was YES. [2022-12-13 09:27:59,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124840 conditions, 51318 events. 36514/51318 cut-off events. For 21463/21463 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 320708 event pairs, 9496 based on Foata normal form. 498/42993 useless extension candidates. Maximal degree in co-relation 124828. Up to 18721 conditions per place. [2022-12-13 09:28:00,248 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 68 selfloop transitions, 9 changer transitions 2/90 dead transitions. [2022-12-13 09:28:00,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 436 flow [2022-12-13 09:28:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:28:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:28:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2022-12-13 09:28:00,250 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2022-12-13 09:28:00,250 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 174 flow. Second operand 4 states and 116 transitions. [2022-12-13 09:28:00,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 436 flow [2022-12-13 09:28:00,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 09:28:00,310 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 214 flow [2022-12-13 09:28:00,310 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-12-13 09:28:00,311 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -35 predicate places. [2022-12-13 09:28:00,311 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:00,311 INFO L89 Accepts]: Start accepts. Operand has 61 places, 56 transitions, 214 flow [2022-12-13 09:28:00,314 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:00,314 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:00,314 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 214 flow [2022-12-13 09:28:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 214 flow [2022-12-13 09:28:00,370 INFO L130 PetriNetUnfolder]: 288/898 cut-off events. [2022-12-13 09:28:00,370 INFO L131 PetriNetUnfolder]: For 357/359 co-relation queries the response was YES. [2022-12-13 09:28:00,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 898 events. 288/898 cut-off events. For 357/359 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6897 event pairs, 78 based on Foata normal form. 0/681 useless extension candidates. Maximal degree in co-relation 1818. Up to 272 conditions per place. [2022-12-13 09:28:00,383 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 56 transitions, 214 flow [2022-12-13 09:28:00,383 INFO L226 LiptonReduction]: Number of co-enabled transitions 1518 [2022-12-13 09:28:00,397 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:00,402 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 91 [2022-12-13 09:28:00,402 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 214 flow [2022-12-13 09:28:00,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:00,402 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:00,403 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 09:28:00,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1346386001, now seen corresponding path program 1 times [2022-12-13 09:28:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539325084] [2022-12-13 09:28:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539325084] [2022-12-13 09:28:00,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539325084] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:00,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:00,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635881] [2022-12-13 09:28:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:28:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:28:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:28:00,554 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:28:00,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:00,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:00,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:28:00,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:03,455 INFO L130 PetriNetUnfolder]: 32520/45739 cut-off events. [2022-12-13 09:28:03,455 INFO L131 PetriNetUnfolder]: For 28985/28985 co-relation queries the response was YES. [2022-12-13 09:28:03,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116776 conditions, 45739 events. 32520/45739 cut-off events. For 28985/28985 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 287902 event pairs, 3452 based on Foata normal form. 60/38510 useless extension candidates. Maximal degree in co-relation 116761. Up to 21361 conditions per place. [2022-12-13 09:28:03,684 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 73 selfloop transitions, 20 changer transitions 0/104 dead transitions. [2022-12-13 09:28:03,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 574 flow [2022-12-13 09:28:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:28:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:28:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2022-12-13 09:28:03,686 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2022-12-13 09:28:03,686 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 214 flow. Second operand 4 states and 122 transitions. [2022-12-13 09:28:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 574 flow [2022-12-13 09:28:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 09:28:03,813 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,813 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2022-12-13 09:28:03,814 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2022-12-13 09:28:03,814 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:03,814 INFO L89 Accepts]: Start accepts. Operand has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,815 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:03,815 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:03,815 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,876 INFO L130 PetriNetUnfolder]: 255/827 cut-off events. [2022-12-13 09:28:03,877 INFO L131 PetriNetUnfolder]: For 1130/1162 co-relation queries the response was YES. [2022-12-13 09:28:03,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 827 events. 255/827 cut-off events. For 1130/1162 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6301 event pairs, 50 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 2147. Up to 237 conditions per place. [2022-12-13 09:28:03,888 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,889 INFO L226 LiptonReduction]: Number of co-enabled transitions 1816 [2022-12-13 09:28:03,896 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:03,897 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 83 [2022-12-13 09:28:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 394 flow [2022-12-13 09:28:03,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:03,898 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:03,898 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 09:28:03,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1188376676, now seen corresponding path program 1 times [2022-12-13 09:28:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298867211] [2022-12-13 09:28:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:04,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:04,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298867211] [2022-12-13 09:28:04,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298867211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:04,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:04,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:28:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246058917] [2022-12-13 09:28:04,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:04,041 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2022-12-13 09:28:04,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:04,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:04,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2022-12-13 09:28:04,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:07,026 INFO L130 PetriNetUnfolder]: 28579/41516 cut-off events. [2022-12-13 09:28:07,027 INFO L131 PetriNetUnfolder]: For 60997/61517 co-relation queries the response was YES. [2022-12-13 09:28:07,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116503 conditions, 41516 events. 28579/41516 cut-off events. For 60997/61517 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 276284 event pairs, 14141 based on Foata normal form. 529/35144 useless extension candidates. Maximal degree in co-relation 116484. Up to 36723 conditions per place. [2022-12-13 09:28:07,279 INFO L137 encePairwiseOnDemand]: 39/43 looper letters, 72 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2022-12-13 09:28:07,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 742 flow [2022-12-13 09:28:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:28:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-12-13 09:28:07,280 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2022-12-13 09:28:07,280 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 394 flow. Second operand 3 states and 91 transitions. [2022-12-13 09:28:07,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 742 flow [2022-12-13 09:28:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 09:28:07,385 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,385 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2022-12-13 09:28:07,386 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -28 predicate places. [2022-12-13 09:28:07,386 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:07,386 INFO L89 Accepts]: Start accepts. Operand has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,388 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:07,389 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:07,389 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,434 INFO L130 PetriNetUnfolder]: 237/785 cut-off events. [2022-12-13 09:28:07,434 INFO L131 PetriNetUnfolder]: For 1124/1162 co-relation queries the response was YES. [2022-12-13 09:28:07,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 785 events. 237/785 cut-off events. For 1124/1162 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5963 event pairs, 24 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 2187. Up to 221 conditions per place. [2022-12-13 09:28:07,441 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,441 INFO L226 LiptonReduction]: Number of co-enabled transitions 2020 [2022-12-13 09:28:07,452 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:07,453 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 67 [2022-12-13 09:28:07,454 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 522 flow [2022-12-13 09:28:07,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:07,454 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:07,454 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:07,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 09:28:07,454 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1752264893, now seen corresponding path program 1 times [2022-12-13 09:28:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:07,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908047816] [2022-12-13 09:28:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:07,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:07,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908047816] [2022-12-13 09:28:07,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908047816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:07,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:07,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:28:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538106687] [2022-12-13 09:28:07,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:07,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:28:07,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:28:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:28:07,568 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:28:07,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:07,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:07,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:28:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:12,621 INFO L130 PetriNetUnfolder]: 47361/66772 cut-off events. [2022-12-13 09:28:12,621 INFO L131 PetriNetUnfolder]: For 111964/111964 co-relation queries the response was YES. [2022-12-13 09:28:12,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190112 conditions, 66772 events. 47361/66772 cut-off events. For 111964/111964 co-relation queries the response was YES. Maximal size of possible extension queue 2284. Compared 443977 event pairs, 8772 based on Foata normal form. 720/55808 useless extension candidates. Maximal degree in co-relation 190090. Up to 27480 conditions per place. [2022-12-13 09:28:12,933 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 80 selfloop transitions, 34 changer transitions 2/127 dead transitions. [2022-12-13 09:28:12,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 938 flow [2022-12-13 09:28:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:28:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:28:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2022-12-13 09:28:12,934 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 09:28:12,935 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 522 flow. Second operand 4 states and 129 transitions. [2022-12-13 09:28:12,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 938 flow [2022-12-13 09:28:13,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 09:28:13,098 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,098 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2022-12-13 09:28:13,099 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -23 predicate places. [2022-12-13 09:28:13,099 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:13,099 INFO L89 Accepts]: Start accepts. Operand has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,101 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:13,102 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:13,102 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,164 INFO L130 PetriNetUnfolder]: 225/885 cut-off events. [2022-12-13 09:28:13,165 INFO L131 PetriNetUnfolder]: For 2198/2300 co-relation queries the response was YES. [2022-12-13 09:28:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 885 events. 225/885 cut-off events. For 2198/2300 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7362 event pairs, 22 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 2756. Up to 224 conditions per place. [2022-12-13 09:28:13,173 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,173 INFO L226 LiptonReduction]: Number of co-enabled transitions 2172 [2022-12-13 09:28:13,253 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:13,254 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 155 [2022-12-13 09:28:13,254 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 721 flow [2022-12-13 09:28:13,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:13,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:13,254 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:13,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 09:28:13,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1752322553, now seen corresponding path program 1 times [2022-12-13 09:28:13,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:13,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023679736] [2022-12-13 09:28:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:13,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:13,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:13,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023679736] [2022-12-13 09:28:13,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023679736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:13,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:13,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448050097] [2022-12-13 09:28:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:13,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:13,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:13,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:13,374 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2022-12-13 09:28:13,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 721 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:13,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:13,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2022-12-13 09:28:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:20,477 INFO L130 PetriNetUnfolder]: 68134/95334 cut-off events. [2022-12-13 09:28:20,477 INFO L131 PetriNetUnfolder]: For 210943/214726 co-relation queries the response was YES. [2022-12-13 09:28:20,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261844 conditions, 95334 events. 68134/95334 cut-off events. For 210943/214726 co-relation queries the response was YES. Maximal size of possible extension queue 3717. Compared 659152 event pairs, 20662 based on Foata normal form. 1903/65974 useless extension candidates. Maximal degree in co-relation 261818. Up to 92110 conditions per place. [2022-12-13 09:28:21,152 INFO L137 encePairwiseOnDemand]: 29/43 looper letters, 91 selfloop transitions, 13 changer transitions 0/132 dead transitions. [2022-12-13 09:28:21,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 1299 flow [2022-12-13 09:28:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:28:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:28:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-12-13 09:28:21,154 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7131782945736435 [2022-12-13 09:28:21,154 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 721 flow. Second operand 3 states and 92 transitions. [2022-12-13 09:28:21,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 1299 flow [2022-12-13 09:28:21,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 1295 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 09:28:21,241 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:21,242 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=808, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2022-12-13 09:28:21,242 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -20 predicate places. [2022-12-13 09:28:21,242 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:21,243 INFO L89 Accepts]: Start accepts. Operand has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:21,244 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:21,244 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:21,244 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:21,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:22,445 INFO L130 PetriNetUnfolder]: 11980/20789 cut-off events. [2022-12-13 09:28:22,445 INFO L131 PetriNetUnfolder]: For 14781/15559 co-relation queries the response was YES. [2022-12-13 09:28:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46053 conditions, 20789 events. 11980/20789 cut-off events. For 14781/15559 co-relation queries the response was YES. Maximal size of possible extension queue 2511. Compared 203328 event pairs, 6636 based on Foata normal form. 22/10258 useless extension candidates. Maximal degree in co-relation 46027. Up to 17008 conditions per place. [2022-12-13 09:28:22,662 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:22,662 INFO L226 LiptonReduction]: Number of co-enabled transitions 2850 [2022-12-13 09:28:23,307 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:23,308 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2066 [2022-12-13 09:28:23,308 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 808 flow [2022-12-13 09:28:23,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:23,308 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:23,308 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 09:28:23,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1044423463, now seen corresponding path program 1 times [2022-12-13 09:28:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:23,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043292421] [2022-12-13 09:28:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043292421] [2022-12-13 09:28:23,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043292421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:23,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:23,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:28:23,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595313922] [2022-12-13 09:28:23,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:23,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:28:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:28:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:28:23,495 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 09:28:23,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:23,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:23,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 09:28:23,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:36,080 INFO L130 PetriNetUnfolder]: 109909/155025 cut-off events. [2022-12-13 09:28:36,081 INFO L131 PetriNetUnfolder]: For 360732/365214 co-relation queries the response was YES. [2022-12-13 09:28:36,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508376 conditions, 155025 events. 109909/155025 cut-off events. For 360732/365214 co-relation queries the response was YES. Maximal size of possible extension queue 6859. Compared 1181897 event pairs, 37014 based on Foata normal form. 1507/122311 useless extension candidates. Maximal degree in co-relation 508347. Up to 90371 conditions per place. [2022-12-13 09:28:36,861 INFO L137 encePairwiseOnDemand]: 33/43 looper letters, 118 selfloop transitions, 37 changer transitions 3/173 dead transitions. [2022-12-13 09:28:36,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 173 transitions, 1597 flow [2022-12-13 09:28:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:28:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:28:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2022-12-13 09:28:36,863 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2022-12-13 09:28:36,863 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 808 flow. Second operand 4 states and 131 transitions. [2022-12-13 09:28:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 173 transitions, 1597 flow [2022-12-13 09:28:37,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 173 transitions, 1568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 09:28:37,251 INFO L231 Difference]: Finished difference. Result has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:37,252 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1185, PETRI_PLACES=81, PETRI_TRANSITIONS=110} [2022-12-13 09:28:37,257 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -15 predicate places. [2022-12-13 09:28:37,257 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:37,257 INFO L89 Accepts]: Start accepts. Operand has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:37,259 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:37,259 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:37,259 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:37,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:39,860 INFO L130 PetriNetUnfolder]: 20193/32871 cut-off events. [2022-12-13 09:28:39,861 INFO L131 PetriNetUnfolder]: For 19138/20513 co-relation queries the response was YES. [2022-12-13 09:28:39,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70372 conditions, 32871 events. 20193/32871 cut-off events. For 19138/20513 co-relation queries the response was YES. Maximal size of possible extension queue 4080. Compared 315652 event pairs, 11584 based on Foata normal form. 27/14556 useless extension candidates. Maximal degree in co-relation 70342. Up to 29422 conditions per place. [2022-12-13 09:28:40,247 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:40,247 INFO L226 LiptonReduction]: Number of co-enabled transitions 3450 [2022-12-13 09:28:41,383 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:41,400 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4143 [2022-12-13 09:28:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 110 transitions, 1185 flow [2022-12-13 09:28:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:41,401 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:41,401 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:28:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 09:28:41,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 09:28:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash 228941317, now seen corresponding path program 1 times [2022-12-13 09:28:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:41,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509554830] [2022-12-13 09:28:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509554830] [2022-12-13 09:28:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509554830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:41,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:41,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:28:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976633441] [2022-12-13 09:28:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:41,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:28:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:28:41,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:28:41,642 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2022-12-13 09:28:41,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 110 transitions, 1185 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:41,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:41,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2022-12-13 09:28:41,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:28:50,830 INFO L130 PetriNetUnfolder]: 71558/104990 cut-off events. [2022-12-13 09:28:50,830 INFO L131 PetriNetUnfolder]: For 298612/301870 co-relation queries the response was YES. [2022-12-13 09:28:51,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352883 conditions, 104990 events. 71558/104990 cut-off events. For 298612/301870 co-relation queries the response was YES. Maximal size of possible extension queue 4734. Compared 813870 event pairs, 11437 based on Foata normal form. 4340/74051 useless extension candidates. Maximal degree in co-relation 352850. Up to 90406 conditions per place. [2022-12-13 09:28:51,328 INFO L137 encePairwiseOnDemand]: 29/43 looper letters, 142 selfloop transitions, 25 changer transitions 5/204 dead transitions. [2022-12-13 09:28:51,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 204 transitions, 2544 flow [2022-12-13 09:28:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:28:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:28:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2022-12-13 09:28:51,330 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2022-12-13 09:28:51,330 INFO L175 Difference]: Start difference. First operand has 81 places, 110 transitions, 1185 flow. Second operand 4 states and 128 transitions. [2022-12-13 09:28:51,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 204 transitions, 2544 flow [2022-12-13 09:28:51,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 204 transitions, 2522 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-12-13 09:28:51,424 INFO L231 Difference]: Finished difference. Result has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:51,424 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1307, PETRI_PLACES=85, PETRI_TRANSITIONS=121} [2022-12-13 09:28:51,425 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -11 predicate places. [2022-12-13 09:28:51,425 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:28:51,425 INFO L89 Accepts]: Start accepts. Operand has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:51,427 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:28:51,427 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:28:51,427 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:51,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:53,025 INFO L130 PetriNetUnfolder]: 15242/27101 cut-off events. [2022-12-13 09:28:53,026 INFO L131 PetriNetUnfolder]: For 18492/24445 co-relation queries the response was YES. [2022-12-13 09:28:53,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83201 conditions, 27101 events. 15242/27101 cut-off events. For 18492/24445 co-relation queries the response was YES. Maximal size of possible extension queue 3792. Compared 275999 event pairs, 4303 based on Foata normal form. 83/13327 useless extension candidates. Maximal degree in co-relation 83168. Up to 23158 conditions per place. [2022-12-13 09:28:53,432 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:53,432 INFO L226 LiptonReduction]: Number of co-enabled transitions 4102 [2022-12-13 09:28:53,961 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:28:53,962 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2537 [2022-12-13 09:28:53,962 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 121 transitions, 1307 flow [2022-12-13 09:28:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:28:53,963 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:28:53,963 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 09:28:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 09:28:53,963 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 09:28:53,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:28:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1523280806, now seen corresponding path program 1 times [2022-12-13 09:28:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:28:53,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149191368] [2022-12-13 09:28:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:28:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:28:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:28:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:28:54,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:28:54,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149191368] [2022-12-13 09:28:54,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149191368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:28:54,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:28:54,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:28:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171707317] [2022-12-13 09:28:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:28:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:28:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:28:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:28:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:28:54,128 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2022-12-13 09:28:54,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 1307 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 09:28:54,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:28:54,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2022-12-13 09:28:54,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:29:08,493 INFO L130 PetriNetUnfolder]: 102753/153386 cut-off events. [2022-12-13 09:29:08,494 INFO L131 PetriNetUnfolder]: For 423792/448640 co-relation queries the response was YES. [2022-12-13 09:29:09,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588171 conditions, 153386 events. 102753/153386 cut-off events. For 423792/448640 co-relation queries the response was YES. Maximal size of possible extension queue 8968. Compared 1323514 event pairs, 31435 based on Foata normal form. 4939/126260 useless extension candidates. Maximal degree in co-relation 588135. Up to 92818 conditions per place. [2022-12-13 09:29:09,283 INFO L137 encePairwiseOnDemand]: 40/43 looper letters, 115 selfloop transitions, 10 changer transitions 7/170 dead transitions. [2022-12-13 09:29:09,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1963 flow [2022-12-13 09:29:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:29:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:29:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-12-13 09:29:09,285 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2022-12-13 09:29:09,285 INFO L175 Difference]: Start difference. First operand has 85 places, 121 transitions, 1307 flow. Second operand 3 states and 91 transitions. [2022-12-13 09:29:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1963 flow [2022-12-13 09:29:09,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 170 transitions, 1881 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-12-13 09:29:09,575 INFO L231 Difference]: Finished difference. Result has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:09,575 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1329, PETRI_PLACES=86, PETRI_TRANSITIONS=124} [2022-12-13 09:29:09,575 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, -10 predicate places. [2022-12-13 09:29:09,576 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:29:09,576 INFO L89 Accepts]: Start accepts. Operand has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:09,577 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:29:09,577 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:29:09,577 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:09,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:12,308 INFO L130 PetriNetUnfolder]: 24159/40881 cut-off events. [2022-12-13 09:29:12,309 INFO L131 PetriNetUnfolder]: For 27693/40862 co-relation queries the response was YES. [2022-12-13 09:29:12,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118726 conditions, 40881 events. 24159/40881 cut-off events. For 27693/40862 co-relation queries the response was YES. Maximal size of possible extension queue 6366. Compared 416875 event pairs, 7057 based on Foata normal form. 118/19070 useless extension candidates. Maximal degree in co-relation 118693. Up to 36100 conditions per place. [2022-12-13 09:29:12,680 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:12,680 INFO L226 LiptonReduction]: Number of co-enabled transitions 4168 [2022-12-13 09:29:13,685 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:29:13,686 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 4110 [2022-12-13 09:29:13,686 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 1329 flow [2022-12-13 09:29:13,686 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 09:29:13,686 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:29:13,687 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 09:29:13,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 09:29:13,687 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 09:29:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:29:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1908875284, now seen corresponding path program 2 times [2022-12-13 09:29:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:29:13,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515515983] [2022-12-13 09:29:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:29:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:29:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:29:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:29:13,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:29:13,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515515983] [2022-12-13 09:29:13,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515515983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:29:13,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:29:13,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:29:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993554452] [2022-12-13 09:29:13,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:29:13,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:29:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:29:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:29:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:29:13,870 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2022-12-13 09:29:13,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 1329 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 09:29:13,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:29:13,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2022-12-13 09:29:13,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand