/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 06:17:19,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 06:17:19,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 06:17:19,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 06:17:19,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 06:17:19,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 06:17:19,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 06:17:19,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 06:17:19,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 06:17:19,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 06:17:19,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 06:17:19,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 06:17:19,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 06:17:19,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 06:17:19,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 06:17:19,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 06:17:19,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 06:17:19,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 06:17:19,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 06:17:19,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 06:17:19,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 06:17:19,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 06:17:19,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 06:17:19,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 06:17:19,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 06:17:19,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 06:17:19,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 06:17:19,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 06:17:19,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 06:17:19,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 06:17:19,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 06:17:19,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 06:17:19,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 06:17:19,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 06:17:19,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 06:17:19,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 06:17:19,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 06:17:19,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 06:17:19,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 06:17:19,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 06:17:19,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 06:17:19,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2022-12-13 06:17:19,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 06:17:19,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 06:17:19,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 06:17:19,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 06:17:19,857 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 06:17:19,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 06:17:19,867 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 06:17:19,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 06:17:19,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 06:17:19,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 06:17:19,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 06:17:19,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:17:19,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 06:17:19,869 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 06:17:19,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-13 06:17:20,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 06:17:20,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 06:17:20,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 06:17:20,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 06:17:20,138 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 06:17:20,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 06:17:21,139 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 06:17:21,524 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 06:17:21,524 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 06:17:21,557 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4675ef0ee/6da73cb0cd7c448898a7406e4dbe3984/FLAG5b3f106ec [2022-12-13 06:17:21,567 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4675ef0ee/6da73cb0cd7c448898a7406e4dbe3984 [2022-12-13 06:17:21,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 06:17:21,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 06:17:21,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 06:17:21,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 06:17:21,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 06:17:21,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:17:21" (1/1) ... [2022-12-13 06:17:21,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335f9dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:21, skipping insertion in model container [2022-12-13 06:17:21,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:17:21" (1/1) ... [2022-12-13 06:17:21,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 06:17:21,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 06:17:21,722 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.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 06:17:21,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,935 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,937 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,938 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,942 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:21,986 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:21,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:17:21,998 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 06:17:22,009 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.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 06:17:22,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 06:17:22,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 06:17:22,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:17:22,125 INFO L208 MainTranslator]: Completed translation [2022-12-13 06:17:22,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22 WrapperNode [2022-12-13 06:17:22,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 06:17:22,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 06:17:22,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 06:17:22,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 06:17:22,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,195 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2022-12-13 06:17:22,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 06:17:22,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 06:17:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 06:17:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 06:17:22,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 06:17:22,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 06:17:22,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 06:17:22,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 06:17:22,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (1/1) ... [2022-12-13 06:17:22,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:17:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 06:17:22,269 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 06:17:22,272 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 06:17:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 06:17:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 06:17:22,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 06:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 06:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 06:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 06:17:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 06:17:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 06:17:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 06:17:22,299 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 06:17:22,445 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 06:17:22,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 06:17:22,701 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 06:17:22,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 06:17:22,816 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 06:17:22,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:17:22 BoogieIcfgContainer [2022-12-13 06:17:22,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 06:17:22,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 06:17:22,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 06:17:22,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 06:17:22,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:17:21" (1/3) ... [2022-12-13 06:17:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1febcc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:17:22, skipping insertion in model container [2022-12-13 06:17:22,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:17:22" (2/3) ... [2022-12-13 06:17:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1febcc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:17:22, skipping insertion in model container [2022-12-13 06:17:22,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:17:22" (3/3) ... [2022-12-13 06:17:22,825 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 06:17:22,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 06:17:22,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 06:17:22,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 06:17:22,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 06:17:22,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2022-12-13 06:17:22,994 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-12-13 06:17:22,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:17:23,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 06:17:23,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2022-12-13 06:17:23,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2022-12-13 06:17:23,009 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:23,033 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2022-12-13 06:17:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2022-12-13 06:17:23,080 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-12-13 06:17:23,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:17:23,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 06:17:23,083 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2022-12-13 06:17:23,083 INFO L226 LiptonReduction]: Number of co-enabled transitions 2936 [2022-12-13 06:17:31,618 INFO L241 LiptonReduction]: Total number of compositions: 100 [2022-12-13 06:17:31,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 06:17:31,633 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;@20665791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 06:17:31,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 06:17:31,637 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2022-12-13 06:17:31,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:17:31,637 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:31,637 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:31,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash -619695006, now seen corresponding path program 1 times [2022-12-13 06:17:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:31,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10694414] [2022-12-13 06:17:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:31,992 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 06:17:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:31,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10694414] [2022-12-13 06:17:31,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10694414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:31,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:31,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 06:17:31,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192738893] [2022-12-13 06:17:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:32,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 06:17:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 06:17:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 06:17:32,024 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 67 [2022-12-13 06:17:32,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:17:32,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:32,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 67 [2022-12-13 06:17:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:17:37,669 INFO L130 PetriNetUnfolder]: 42055/62575 cut-off events. [2022-12-13 06:17:37,669 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 06:17:37,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118479 conditions, 62575 events. 42055/62575 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 3808. Compared 514099 event pairs, 5495 based on Foata normal form. 0/37016 useless extension candidates. Maximal degree in co-relation 118467. Up to 47761 conditions per place. [2022-12-13 06:17:37,926 INFO L137 encePairwiseOnDemand]: 61/67 looper letters, 36 selfloop transitions, 3 changer transitions 48/101 dead transitions. [2022-12-13 06:17:37,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 388 flow [2022-12-13 06:17:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 06:17:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 06:17:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2022-12-13 06:17:37,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 06:17:37,940 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2022-12-13 06:17:37,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 101 transitions, 388 flow [2022-12-13 06:17:38,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 53 transitions, 196 flow [2022-12-13 06:17:38,334 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:17:38,336 INFO L89 Accepts]: Start accepts. Operand has 55 places, 53 transitions, 196 flow [2022-12-13 06:17:38,340 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:17:38,340 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:38,340 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 53 transitions, 196 flow [2022-12-13 06:17:38,345 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 53 transitions, 196 flow [2022-12-13 06:17:38,345 INFO L226 LiptonReduction]: Number of co-enabled transitions 816 [2022-12-13 06:17:40,646 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:17:40,648 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2314 [2022-12-13 06:17:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 196 flow [2022-12-13 06:17:40,648 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 06:17:40,648 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:40,648 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:40,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 06:17:40,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1473692271, now seen corresponding path program 1 times [2022-12-13 06:17:40,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:40,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660331246] [2022-12-13 06:17:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:41,108 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 06:17:41,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:41,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660331246] [2022-12-13 06:17:41,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660331246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:41,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:41,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 06:17:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778190221] [2022-12-13 06:17:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:41,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 06:17:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:41,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 06:17:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 06:17:41,112 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 06:17:41,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 06:17:41,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:41,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 06:17:41,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:17:42,991 INFO L130 PetriNetUnfolder]: 20650/29427 cut-off events. [2022-12-13 06:17:42,991 INFO L131 PetriNetUnfolder]: For 4078/4078 co-relation queries the response was YES. [2022-12-13 06:17:43,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80207 conditions, 29427 events. 20650/29427 cut-off events. For 4078/4078 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 178863 event pairs, 2874 based on Foata normal form. 1080/24676 useless extension candidates. Maximal degree in co-relation 80192. Up to 20403 conditions per place. [2022-12-13 06:17:43,144 INFO L137 encePairwiseOnDemand]: 29/40 looper letters, 66 selfloop transitions, 10 changer transitions 1/86 dead transitions. [2022-12-13 06:17:43,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 86 transitions, 468 flow [2022-12-13 06:17:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 06:17:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 06:17:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2022-12-13 06:17:43,147 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64375 [2022-12-13 06:17:43,148 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -21 predicate places. [2022-12-13 06:17:43,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 86 transitions, 468 flow [2022-12-13 06:17:43,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 85 transitions, 462 flow [2022-12-13 06:17:43,364 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:17:43,364 INFO L89 Accepts]: Start accepts. Operand has 57 places, 85 transitions, 462 flow [2022-12-13 06:17:43,365 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:17:43,365 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:43,365 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 85 transitions, 462 flow [2022-12-13 06:17:43,367 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 85 transitions, 462 flow [2022-12-13 06:17:43,367 INFO L226 LiptonReduction]: Number of co-enabled transitions 934 [2022-12-13 06:17:45,631 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 06:17:45,632 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2269 [2022-12-13 06:17:45,632 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 85 transitions, 464 flow [2022-12-13 06:17:45,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 06:17:45,632 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:45,632 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:45,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 06:17:45,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:45,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1120983534, now seen corresponding path program 1 times [2022-12-13 06:17:45,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:45,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504298832] [2022-12-13 06:17:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:45,904 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 06:17:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504298832] [2022-12-13 06:17:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504298832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:45,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:45,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 06:17:45,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415514931] [2022-12-13 06:17:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 06:17:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 06:17:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 06:17:45,909 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2022-12-13 06:17:45,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 85 transitions, 464 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 06:17:45,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:45,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2022-12-13 06:17:45,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:17:48,101 INFO L130 PetriNetUnfolder]: 18697/26989 cut-off events. [2022-12-13 06:17:48,102 INFO L131 PetriNetUnfolder]: For 10937/10937 co-relation queries the response was YES. [2022-12-13 06:17:48,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94615 conditions, 26989 events. 18697/26989 cut-off events. For 10937/10937 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 168303 event pairs, 1211 based on Foata normal form. 130/22045 useless extension candidates. Maximal degree in co-relation 94597. Up to 20808 conditions per place. [2022-12-13 06:17:48,250 INFO L137 encePairwiseOnDemand]: 36/42 looper letters, 96 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2022-12-13 06:17:48,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 06:17:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 06:17:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2022-12-13 06:17:48,252 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2022-12-13 06:17:48,252 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2022-12-13 06:17:48,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,505 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:17:48,505 INFO L89 Accepts]: Start accepts. Operand has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,508 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:17:48,508 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:48,509 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,523 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,524 INFO L226 LiptonReduction]: Number of co-enabled transitions 1216 [2022-12-13 06:17:48,569 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:17:48,570 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 65 [2022-12-13 06:17:48,570 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 122 transitions, 892 flow [2022-12-13 06:17:48,570 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 06:17:48,570 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:48,570 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:48,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 06:17:48,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1981533662, now seen corresponding path program 1 times [2022-12-13 06:17:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:48,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807227442] [2022-12-13 06:17:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:48,700 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 06:17:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807227442] [2022-12-13 06:17:48,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807227442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:48,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:48,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 06:17:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793239191] [2022-12-13 06:17:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 06:17:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 06:17:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 06:17:48,704 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2022-12-13 06:17:48,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 122 transitions, 892 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:17:48,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:48,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2022-12-13 06:17:48,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:17:51,196 INFO L130 PetriNetUnfolder]: 25007/36874 cut-off events. [2022-12-13 06:17:51,197 INFO L131 PetriNetUnfolder]: For 32256/32256 co-relation queries the response was YES. [2022-12-13 06:17:51,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157915 conditions, 36874 events. 25007/36874 cut-off events. For 32256/32256 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 252482 event pairs, 1261 based on Foata normal form. 1350/30460 useless extension candidates. Maximal degree in co-relation 157894. Up to 28333 conditions per place. [2022-12-13 06:17:51,628 INFO L137 encePairwiseOnDemand]: 36/41 looper letters, 133 selfloop transitions, 9 changer transitions 7/167 dead transitions. [2022-12-13 06:17:51,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 167 transitions, 1553 flow [2022-12-13 06:17:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 06:17:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 06:17:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2022-12-13 06:17:51,661 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7235772357723578 [2022-12-13 06:17:51,662 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -18 predicate places. [2022-12-13 06:17:51,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 167 transitions, 1553 flow [2022-12-13 06:17:52,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 160 transitions, 1485 flow [2022-12-13 06:17:52,401 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:17:52,401 INFO L89 Accepts]: Start accepts. Operand has 61 places, 160 transitions, 1485 flow [2022-12-13 06:17:52,405 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:17:52,405 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:52,405 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 160 transitions, 1485 flow [2022-12-13 06:17:52,409 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 160 transitions, 1485 flow [2022-12-13 06:17:52,409 INFO L226 LiptonReduction]: Number of co-enabled transitions 1532 [2022-12-13 06:17:52,484 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:17:52,500 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 99 [2022-12-13 06:17:52,500 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 160 transitions, 1485 flow [2022-12-13 06:17:52,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:17:52,500 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:52,500 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:52,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 06:17:52,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:52,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash -390958439, now seen corresponding path program 1 times [2022-12-13 06:17:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:52,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781925846] [2022-12-13 06:17:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:52,837 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 06:17:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:52,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781925846] [2022-12-13 06:17:52,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781925846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:52,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:52,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 06:17:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774144058] [2022-12-13 06:17:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:52,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 06:17:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 06:17:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 06:17:52,839 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2022-12-13 06:17:52,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 160 transitions, 1485 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:17:52,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:52,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2022-12-13 06:17:52,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:17:55,940 INFO L130 PetriNetUnfolder]: 24316/35894 cut-off events. [2022-12-13 06:17:55,940 INFO L131 PetriNetUnfolder]: For 28905/28905 co-relation queries the response was YES. [2022-12-13 06:17:56,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188445 conditions, 35894 events. 24316/35894 cut-off events. For 28905/28905 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 244711 event pairs, 1020 based on Foata normal form. 100/28307 useless extension candidates. Maximal degree in co-relation 188421. Up to 27726 conditions per place. [2022-12-13 06:17:56,217 INFO L137 encePairwiseOnDemand]: 27/41 looper letters, 219 selfloop transitions, 42 changer transitions 0/270 dead transitions. [2022-12-13 06:17:56,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 06:17:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 06:17:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2022-12-13 06:17:56,219 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7134146341463414 [2022-12-13 06:17:56,219 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2022-12-13 06:17:56,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,871 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:17:56,871 INFO L89 Accepts]: Start accepts. Operand has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,874 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:17:56,874 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:17:56,875 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,883 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,883 INFO L226 LiptonReduction]: Number of co-enabled transitions 2278 [2022-12-13 06:17:56,946 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:17:56,949 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 78 [2022-12-13 06:17:56,949 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 270 transitions, 3072 flow [2022-12-13 06:17:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:17:56,949 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:17:56,949 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:17:56,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 06:17:56,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:17:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:17:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2147202178, now seen corresponding path program 1 times [2022-12-13 06:17:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:17:56,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900499771] [2022-12-13 06:17:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:17:56,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:17:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:17:57,291 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 06:17:57,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:17:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900499771] [2022-12-13 06:17:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900499771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:17:57,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:17:57,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 06:17:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202114989] [2022-12-13 06:17:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:17:57,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 06:17:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:17:57,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 06:17:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 06:17:57,294 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2022-12-13 06:17:57,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 270 transitions, 3072 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 06:17:57,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:17:57,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2022-12-13 06:17:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:01,564 INFO L130 PetriNetUnfolder]: 32290/48452 cut-off events. [2022-12-13 06:18:01,564 INFO L131 PetriNetUnfolder]: For 60956/60956 co-relation queries the response was YES. [2022-12-13 06:18:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294120 conditions, 48452 events. 32290/48452 cut-off events. For 60956/60956 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 355217 event pairs, 1370 based on Foata normal form. 1125/38185 useless extension candidates. Maximal degree in co-relation 294093. Up to 37948 conditions per place. [2022-12-13 06:18:01,867 INFO L137 encePairwiseOnDemand]: 36/41 looper letters, 282 selfloop transitions, 16 changer transitions 46/369 dead transitions. [2022-12-13 06:18:01,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 369 transitions, 4953 flow [2022-12-13 06:18:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 06:18:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 06:18:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-12-13 06:18:01,870 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2022-12-13 06:18:01,872 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2022-12-13 06:18:01,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 369 transitions, 4953 flow [2022-12-13 06:18:02,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 323 transitions, 4323 flow [2022-12-13 06:18:02,591 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:02,591 INFO L89 Accepts]: Start accepts. Operand has 66 places, 323 transitions, 4323 flow [2022-12-13 06:18:02,592 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:02,592 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:02,592 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 323 transitions, 4323 flow [2022-12-13 06:18:02,623 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 323 transitions, 4323 flow [2022-12-13 06:18:02,624 INFO L226 LiptonReduction]: Number of co-enabled transitions 2664 [2022-12-13 06:18:02,694 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:02,695 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 104 [2022-12-13 06:18:02,695 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 323 transitions, 4323 flow [2022-12-13 06:18:02,695 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 06:18:02,695 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:02,695 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 06:18:02,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash 835170622, now seen corresponding path program 1 times [2022-12-13 06:18:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:02,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321558070] [2022-12-13 06:18:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:02,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:03,435 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 06:18:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:03,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321558070] [2022-12-13 06:18:03,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321558070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:03,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:03,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 06:18:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523961584] [2022-12-13 06:18:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:03,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 06:18:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 06:18:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 06:18:03,437 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:03,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 323 transitions, 4323 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:03,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:03,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:03,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:07,720 INFO L130 PetriNetUnfolder]: 27688/42168 cut-off events. [2022-12-13 06:18:07,721 INFO L131 PetriNetUnfolder]: For 75369/75369 co-relation queries the response was YES. [2022-12-13 06:18:07,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290879 conditions, 42168 events. 27688/42168 cut-off events. For 75369/75369 co-relation queries the response was YES. Maximal size of possible extension queue 2193. Compared 313400 event pairs, 1088 based on Foata normal form. 80/31943 useless extension candidates. Maximal degree in co-relation 290849. Up to 33236 conditions per place. [2022-12-13 06:18:08,168 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 382 selfloop transitions, 30 changer transitions 14/449 dead transitions. [2022-12-13 06:18:08,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 449 transitions, 6903 flow [2022-12-13 06:18:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 06:18:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 06:18:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2022-12-13 06:18:08,169 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.65 [2022-12-13 06:18:08,170 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2022-12-13 06:18:08,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 449 transitions, 6903 flow [2022-12-13 06:18:08,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 435 transitions, 6679 flow [2022-12-13 06:18:08,649 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:08,649 INFO L89 Accepts]: Start accepts. Operand has 69 places, 435 transitions, 6679 flow [2022-12-13 06:18:08,651 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:08,651 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:08,651 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 435 transitions, 6679 flow [2022-12-13 06:18:08,667 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 435 transitions, 6679 flow [2022-12-13 06:18:08,668 INFO L226 LiptonReduction]: Number of co-enabled transitions 3252 [2022-12-13 06:18:08,720 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:08,721 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 72 [2022-12-13 06:18:08,721 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 435 transitions, 6679 flow [2022-12-13 06:18:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:08,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:08,721 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 06:18:08,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 118282256, now seen corresponding path program 1 times [2022-12-13 06:18:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:08,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294458607] [2022-12-13 06:18:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:09,544 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 06:18:09,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:09,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294458607] [2022-12-13 06:18:09,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294458607] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:09,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:09,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 06:18:09,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715052996] [2022-12-13 06:18:09,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:09,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 06:18:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 06:18:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 06:18:09,546 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:09,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 435 transitions, 6679 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:09,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:09,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:09,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:15,159 INFO L130 PetriNetUnfolder]: 28727/43585 cut-off events. [2022-12-13 06:18:15,159 INFO L131 PetriNetUnfolder]: For 124845/124845 co-relation queries the response was YES. [2022-12-13 06:18:15,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336544 conditions, 43585 events. 28727/43585 cut-off events. For 124845/124845 co-relation queries the response was YES. Maximal size of possible extension queue 2157. Compared 322530 event pairs, 1068 based on Foata normal form. 80/33358 useless extension candidates. Maximal degree in co-relation 336511. Up to 34443 conditions per place. [2022-12-13 06:18:15,448 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 453 selfloop transitions, 42 changer transitions 32/550 dead transitions. [2022-12-13 06:18:15,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 550 transitions, 9585 flow [2022-12-13 06:18:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 06:18:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 06:18:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2022-12-13 06:18:15,450 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.635 [2022-12-13 06:18:15,450 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2022-12-13 06:18:15,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 550 transitions, 9585 flow [2022-12-13 06:18:15,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 518 transitions, 9009 flow [2022-12-13 06:18:16,157 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:16,157 INFO L89 Accepts]: Start accepts. Operand has 73 places, 518 transitions, 9009 flow [2022-12-13 06:18:16,159 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:16,159 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:16,159 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 518 transitions, 9009 flow [2022-12-13 06:18:16,183 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 518 transitions, 9009 flow [2022-12-13 06:18:16,184 INFO L226 LiptonReduction]: Number of co-enabled transitions 3708 [2022-12-13 06:18:16,239 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:16,240 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 83 [2022-12-13 06:18:16,240 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 518 transitions, 9009 flow [2022-12-13 06:18:16,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:16,240 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:16,240 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:16,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 06:18:16,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -724188440, now seen corresponding path program 2 times [2022-12-13 06:18:16,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:16,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654431195] [2022-12-13 06:18:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:16,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:16,722 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 06:18:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:16,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654431195] [2022-12-13 06:18:16,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654431195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:16,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:16,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 06:18:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546605841] [2022-12-13 06:18:16,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:16,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 06:18:16,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 06:18:16,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 06:18:16,725 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:16,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 518 transitions, 9009 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:16,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:16,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:16,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:22,810 INFO L130 PetriNetUnfolder]: 32696/49591 cut-off events. [2022-12-13 06:18:22,810 INFO L131 PetriNetUnfolder]: For 220842/220842 co-relation queries the response was YES. [2022-12-13 06:18:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421755 conditions, 49591 events. 32696/49591 cut-off events. For 220842/220842 co-relation queries the response was YES. Maximal size of possible extension queue 2553. Compared 375469 event pairs, 1164 based on Foata normal form. 280/38181 useless extension candidates. Maximal degree in co-relation 421719. Up to 39134 conditions per place. [2022-12-13 06:18:23,180 INFO L137 encePairwiseOnDemand]: 33/40 looper letters, 511 selfloop transitions, 46 changer transitions 40/620 dead transitions. [2022-12-13 06:18:23,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 620 transitions, 12039 flow [2022-12-13 06:18:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 06:18:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 06:18:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2022-12-13 06:18:23,182 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64 [2022-12-13 06:18:23,183 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2022-12-13 06:18:23,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 620 transitions, 12039 flow [2022-12-13 06:18:23,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 580 transitions, 11239 flow [2022-12-13 06:18:23,968 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:23,968 INFO L89 Accepts]: Start accepts. Operand has 77 places, 580 transitions, 11239 flow [2022-12-13 06:18:23,970 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:23,970 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:23,971 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 580 transitions, 11239 flow [2022-12-13 06:18:23,998 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 580 transitions, 11239 flow [2022-12-13 06:18:23,998 INFO L226 LiptonReduction]: Number of co-enabled transitions 4126 [2022-12-13 06:18:24,057 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:24,058 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 90 [2022-12-13 06:18:24,058 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 580 transitions, 11239 flow [2022-12-13 06:18:24,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 06:18:24,058 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:24,058 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 06:18:24,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 120473336, now seen corresponding path program 3 times [2022-12-13 06:18:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:24,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934280427] [2022-12-13 06:18:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:24,329 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 06:18:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:24,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934280427] [2022-12-13 06:18:24,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934280427] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:24,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:24,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 06:18:24,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584380857] [2022-12-13 06:18:24,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:24,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 06:18:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 06:18:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 06:18:24,332 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:24,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 580 transitions, 11239 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 06:18:24,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:24,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:30,555 INFO L130 PetriNetUnfolder]: 32199/49366 cut-off events. [2022-12-13 06:18:30,555 INFO L131 PetriNetUnfolder]: For 275162/275162 co-relation queries the response was YES. [2022-12-13 06:18:30,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460038 conditions, 49366 events. 32199/49366 cut-off events. For 275162/275162 co-relation queries the response was YES. Maximal size of possible extension queue 2594. Compared 380552 event pairs, 928 based on Foata normal form. 200/38039 useless extension candidates. Maximal degree in co-relation 459999. Up to 39079 conditions per place. [2022-12-13 06:18:30,951 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 557 selfloop transitions, 65 changer transitions 23/668 dead transitions. [2022-12-13 06:18:30,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 668 transitions, 14289 flow [2022-12-13 06:18:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 06:18:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 06:18:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2022-12-13 06:18:30,953 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2022-12-13 06:18:30,953 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2022-12-13 06:18:30,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 668 transitions, 14289 flow [2022-12-13 06:18:31,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 645 transitions, 13783 flow [2022-12-13 06:18:31,745 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:31,746 INFO L89 Accepts]: Start accepts. Operand has 82 places, 645 transitions, 13783 flow [2022-12-13 06:18:31,748 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:31,748 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:31,748 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 645 transitions, 13783 flow [2022-12-13 06:18:31,781 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 645 transitions, 13783 flow [2022-12-13 06:18:31,781 INFO L226 LiptonReduction]: Number of co-enabled transitions 4546 [2022-12-13 06:18:31,834 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:31,835 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 90 [2022-12-13 06:18:31,835 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 645 transitions, 13783 flow [2022-12-13 06:18:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 06:18:31,836 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:31,836 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:31,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 06:18:31,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -628228569, now seen corresponding path program 1 times [2022-12-13 06:18:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:31,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136005624] [2022-12-13 06:18:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:32,370 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 06:18:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:32,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136005624] [2022-12-13 06:18:32,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136005624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:32,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:32,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 06:18:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730696832] [2022-12-13 06:18:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 06:18:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 06:18:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 06:18:32,372 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:32,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 645 transitions, 13783 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 06:18:32,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:32,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:39,789 INFO L130 PetriNetUnfolder]: 35211/54348 cut-off events. [2022-12-13 06:18:39,789 INFO L131 PetriNetUnfolder]: For 408366/408366 co-relation queries the response was YES. [2022-12-13 06:18:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544944 conditions, 54348 events. 35211/54348 cut-off events. For 408366/408366 co-relation queries the response was YES. Maximal size of possible extension queue 3047. Compared 431549 event pairs, 1272 based on Foata normal form. 240/41915 useless extension candidates. Maximal degree in co-relation 544902. Up to 42622 conditions per place. [2022-12-13 06:18:40,281 INFO L137 encePairwiseOnDemand]: 32/40 looper letters, 638 selfloop transitions, 38 changer transitions 36/735 dead transitions. [2022-12-13 06:18:40,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 735 transitions, 17187 flow [2022-12-13 06:18:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 06:18:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 06:18:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2022-12-13 06:18:40,283 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.645 [2022-12-13 06:18:40,283 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2022-12-13 06:18:40,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 735 transitions, 17187 flow [2022-12-13 06:18:40,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 699 transitions, 16323 flow [2022-12-13 06:18:41,288 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 06:18:41,288 INFO L89 Accepts]: Start accepts. Operand has 86 places, 699 transitions, 16323 flow [2022-12-13 06:18:41,291 INFO L95 Accepts]: Finished accepts. [2022-12-13 06:18:41,291 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:18:41,291 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 699 transitions, 16323 flow [2022-12-13 06:18:41,334 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 699 transitions, 16323 flow [2022-12-13 06:18:41,335 INFO L226 LiptonReduction]: Number of co-enabled transitions 4924 [2022-12-13 06:18:41,392 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 06:18:41,393 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 105 [2022-12-13 06:18:41,393 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 699 transitions, 16323 flow [2022-12-13 06:18:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 06:18:41,393 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:18:41,393 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 06:18:41,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 06:18:41,393 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 06:18:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:18:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash -975016369, now seen corresponding path program 2 times [2022-12-13 06:18:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:18:41,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923104629] [2022-12-13 06:18:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:18:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:18:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 06:18:41,930 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 06:18:41,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 06:18:41,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923104629] [2022-12-13 06:18:41,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923104629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 06:18:41,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 06:18:41,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 06:18:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598465286] [2022-12-13 06:18:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 06:18:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 06:18:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 06:18:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 06:18:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 06:18:41,934 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2022-12-13 06:18:41,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 699 transitions, 16323 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 06:18:41,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 06:18:41,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2022-12-13 06:18:41,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 06:18:50,148 INFO L130 PetriNetUnfolder]: 34689/54136 cut-off events. [2022-12-13 06:18:50,148 INFO L131 PetriNetUnfolder]: For 485297/485297 co-relation queries the response was YES. [2022-12-13 06:18:50,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581717 conditions, 54136 events. 34689/54136 cut-off events. For 485297/485297 co-relation queries the response was YES. Maximal size of possible extension queue 3089. Compared 438246 event pairs, 1608 based on Foata normal form. 120/41772 useless extension candidates. Maximal degree in co-relation 581672. Up to 42106 conditions per place. [2022-12-13 06:18:50,812 INFO L137 encePairwiseOnDemand]: 34/40 looper letters, 698 selfloop transitions, 92 changer transitions 47/860 dead transitions. [2022-12-13 06:18:50,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 860 transitions, 21861 flow [2022-12-13 06:18:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 06:18:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 06:18:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2022-12-13 06:18:50,815 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2022-12-13 06:18:50,816 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-13 06:18:50,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 860 transitions, 21861 flow [2022-12-13 06:18:51,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 813 transitions, 20639 flow