/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:50:37,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:50:37,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:50:37,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:50:37,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:50:37,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:50:37,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:50:37,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:50:37,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:50:37,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:50:37,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:50:37,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:50:37,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:50:37,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:50:37,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:50:37,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:50:37,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:50:37,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:50:37,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:50:37,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:50:37,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:50:37,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:50:37,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:50:37,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:50:37,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:50:37,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:50:37,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:50:37,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:50:37,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:50:37,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:50:37,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:50:37,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:50:37,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:50:37,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:50:37,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:50:37,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:50:37,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:50:37,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:50:37,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:50:37,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:50:37,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:50:37,849 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-NoLbe.epf [2022-12-12 12:50:37,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:50:37,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:50:37,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:50:37,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:50:37,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:50:37,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:50:37,890 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:50:37,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:50:37,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:50:37,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:50:37,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:50:37,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:50:37,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:50:37,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:50:37,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:50:37,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:50:37,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:50:37,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:50:37,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:50:37,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:50:37,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:50:37,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:50:38,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:50:38,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:50:38,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:50:38,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:50:38,259 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:50:38,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-12-12 12:50:39,398 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:50:39,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:50:39,619 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-12-12 12:50:39,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2668eb965/e868ca1a65ee4f25a748ee6dcf9fa453/FLAGef3304f24 [2022-12-12 12:50:39,637 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2668eb965/e868ca1a65ee4f25a748ee6dcf9fa453 [2022-12-12 12:50:39,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:50:39,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:50:39,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:50:39,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:50:39,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:50:39,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e1eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39, skipping insertion in model container [2022-12-12 12:50:39,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:50:39,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:50:39,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,823 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-12-12 12:50:39,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:50:39,838 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:50:39,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:50:39,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:50:39,890 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-12-12 12:50:39,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:50:39,907 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:50:39,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39 WrapperNode [2022-12-12 12:50:39,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:50:39,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:50:39,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:50:39,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:50:39,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,958 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2022-12-12 12:50:39,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:50:39,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:50:39,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:50:39,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:50:39,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:39,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:50:39,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:50:39,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:50:39,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:50:39,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (1/1) ... [2022-12-12 12:50:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:50:40,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:50:40,030 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) [2022-12-12 12:50:40,051 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 [2022-12-12 12:50:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:50:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 12:50:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 12:50:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 12:50:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:50:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:50:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:50:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:50:40,070 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:50:40,173 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:50:40,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:50:40,344 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:50:40,431 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:50:40,433 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:50:40,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:50:40 BoogieIcfgContainer [2022-12-12 12:50:40,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:50:40,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:50:40,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:50:40,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:50:40,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:50:39" (1/3) ... [2022-12-12 12:50:40,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5f110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:50:40, skipping insertion in model container [2022-12-12 12:50:40,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:50:39" (2/3) ... [2022-12-12 12:50:40,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d5f110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:50:40, skipping insertion in model container [2022-12-12 12:50:40,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:50:40" (3/3) ... [2022-12-12 12:50:40,453 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-12-12 12:50:40,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:50:40,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:50:40,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:50:40,573 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 12:50:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 218 flow [2022-12-12 12:50:40,696 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-12-12 12:50:40,696 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:50:40,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 2/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-12 12:50:40,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 101 transitions, 218 flow [2022-12-12 12:50:40,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 91 transitions, 194 flow [2022-12-12 12:50:40,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:50:40,727 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, 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;@5f646c37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:50:40,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 12:50:40,754 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-12-12 12:50:40,754 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:50:40,755 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:40,755 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:40,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash -548878490, now seen corresponding path program 1 times [2022-12-12 12:50:40,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:40,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702691449] [2022-12-12 12:50:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:41,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:41,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702691449] [2022-12-12 12:50:41,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702691449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:41,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:41,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-12 12:50:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592977448] [2022-12-12 12:50:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:41,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 12:50:41,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:41,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 12:50:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-12 12:50:41,824 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-12-12 12:50:41,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 194 flow. Second operand has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 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) [2022-12-12 12:50:41,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:41,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-12-12 12:50:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:42,243 INFO L130 PetriNetUnfolder]: 33/250 cut-off events. [2022-12-12 12:50:42,243 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-12 12:50:42,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 250 events. 33/250 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 892 event pairs, 18 based on Foata normal form. 5/247 useless extension candidates. Maximal degree in co-relation 239. Up to 44 conditions per place. [2022-12-12 12:50:42,247 INFO L137 encePairwiseOnDemand]: 83/101 looper letters, 40 selfloop transitions, 13 changer transitions 15/127 dead transitions. [2022-12-12 12:50:42,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 127 transitions, 423 flow [2022-12-12 12:50:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:50:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:50:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1162 transitions. [2022-12-12 12:50:42,262 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.719059405940594 [2022-12-12 12:50:42,267 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2022-12-12 12:50:42,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 127 transitions, 423 flow [2022-12-12 12:50:42,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 388 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-12 12:50:42,276 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 127 transitions, 388 flow [2022-12-12 12:50:42,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 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) [2022-12-12 12:50:42,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:42,278 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:50:42,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash -676742674, now seen corresponding path program 2 times [2022-12-12 12:50:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916369453] [2022-12-12 12:50:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:42,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916369453] [2022-12-12 12:50:42,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916369453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:42,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:42,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:50:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679542394] [2022-12-12 12:50:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:42,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:50:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:42,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:50:42,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:50:42,451 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 101 [2022-12-12 12:50:42,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2022-12-12 12:50:42,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:42,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 101 [2022-12-12 12:50:42,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:42,513 INFO L130 PetriNetUnfolder]: 39/277 cut-off events. [2022-12-12 12:50:42,513 INFO L131 PetriNetUnfolder]: For 74/87 co-relation queries the response was YES. [2022-12-12 12:50:42,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 277 events. 39/277 cut-off events. For 74/87 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1017 event pairs, 13 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 192. Up to 65 conditions per place. [2022-12-12 12:50:42,517 INFO L137 encePairwiseOnDemand]: 98/101 looper letters, 28 selfloop transitions, 2 changer transitions 14/130 dead transitions. [2022-12-12 12:50:42,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 130 transitions, 469 flow [2022-12-12 12:50:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:50:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:50:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-12-12 12:50:42,519 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8844884488448845 [2022-12-12 12:50:42,519 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2022-12-12 12:50:42,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 130 transitions, 469 flow [2022-12-12 12:50:42,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 453 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-12 12:50:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 453 flow [2022-12-12 12:50:42,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2022-12-12 12:50:42,527 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:42,540 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:42,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:50:42,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -339960158, now seen corresponding path program 3 times [2022-12-12 12:50:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:42,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254796465] [2022-12-12 12:50:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:42,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:42,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254796465] [2022-12-12 12:50:42,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254796465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:42,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:42,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-12 12:50:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682407643] [2022-12-12 12:50:42,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 12:50:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 12:50:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-12 12:50:42,935 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 101 [2022-12-12 12:50:42,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 453 flow. Second operand has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 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) [2022-12-12 12:50:42,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:42,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 101 [2022-12-12 12:50:42,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:43,232 INFO L130 PetriNetUnfolder]: 39/274 cut-off events. [2022-12-12 12:50:43,233 INFO L131 PetriNetUnfolder]: For 147/171 co-relation queries the response was YES. [2022-12-12 12:50:43,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 274 events. 39/274 cut-off events. For 147/171 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1017 event pairs, 8 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 246. Up to 56 conditions per place. [2022-12-12 12:50:43,238 INFO L137 encePairwiseOnDemand]: 85/101 looper letters, 36 selfloop transitions, 14 changer transitions 28/137 dead transitions. [2022-12-12 12:50:43,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 137 transitions, 652 flow [2022-12-12 12:50:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:50:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:50:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1158 transitions. [2022-12-12 12:50:43,241 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7165841584158416 [2022-12-12 12:50:43,242 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2022-12-12 12:50:43,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 137 transitions, 652 flow [2022-12-12 12:50:43,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 137 transitions, 585 flow, removed 31 selfloop flow, removed 2 redundant places. [2022-12-12 12:50:43,247 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 137 transitions, 585 flow [2022-12-12 12:50:43,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 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) [2022-12-12 12:50:43,247 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:43,248 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:43,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:50:43,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1846859158, now seen corresponding path program 4 times [2022-12-12 12:50:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:43,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256460392] [2022-12-12 12:50:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:43,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256460392] [2022-12-12 12:50:43,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256460392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:43,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:43,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:50:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515472385] [2022-12-12 12:50:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:50:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:50:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:50:43,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 101 [2022-12-12 12:50:43,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 137 transitions, 585 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2022-12-12 12:50:43,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:43,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 101 [2022-12-12 12:50:43,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:43,442 INFO L130 PetriNetUnfolder]: 45/292 cut-off events. [2022-12-12 12:50:43,442 INFO L131 PetriNetUnfolder]: For 268/289 co-relation queries the response was YES. [2022-12-12 12:50:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 292 events. 45/292 cut-off events. For 268/289 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1122 event pairs, 8 based on Foata normal form. 4/291 useless extension candidates. Maximal degree in co-relation 305. Up to 71 conditions per place. [2022-12-12 12:50:43,444 INFO L137 encePairwiseOnDemand]: 98/101 looper letters, 28 selfloop transitions, 2 changer transitions 29/140 dead transitions. [2022-12-12 12:50:43,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 140 transitions, 694 flow [2022-12-12 12:50:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:50:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:50:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-12-12 12:50:43,445 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8844884488448845 [2022-12-12 12:50:43,447 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2022-12-12 12:50:43,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 140 transitions, 694 flow [2022-12-12 12:50:43,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 140 transitions, 662 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-12 12:50:43,450 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 140 transitions, 662 flow [2022-12-12 12:50:43,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2022-12-12 12:50:43,450 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:43,450 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:43,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:50:43,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -353032450, now seen corresponding path program 5 times [2022-12-12 12:50:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911710396] [2022-12-12 12:50:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:43,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911710396] [2022-12-12 12:50:43,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911710396] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:43,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:43,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:50:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883729419] [2022-12-12 12:50:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:50:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:43,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:50:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:50:43,780 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-12-12 12:50:43,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 140 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 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) [2022-12-12 12:50:43,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:43,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-12-12 12:50:43,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:43,914 INFO L130 PetriNetUnfolder]: 99/419 cut-off events. [2022-12-12 12:50:43,914 INFO L131 PetriNetUnfolder]: For 550/583 co-relation queries the response was YES. [2022-12-12 12:50:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 419 events. 99/419 cut-off events. For 550/583 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1969 event pairs, 14 based on Foata normal form. 6/413 useless extension candidates. Maximal degree in co-relation 862. Up to 132 conditions per place. [2022-12-12 12:50:43,916 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 47 selfloop transitions, 9 changer transitions 57/179 dead transitions. [2022-12-12 12:50:43,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 179 transitions, 1187 flow [2022-12-12 12:50:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:50:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:50:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 683 transitions. [2022-12-12 12:50:43,918 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7513751375137514 [2022-12-12 12:50:43,919 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 34 predicate places. [2022-12-12 12:50:43,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 179 transitions, 1187 flow [2022-12-12 12:50:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 179 transitions, 1121 flow, removed 31 selfloop flow, removed 2 redundant places. [2022-12-12 12:50:43,923 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 179 transitions, 1121 flow [2022-12-12 12:50:43,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 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) [2022-12-12 12:50:43,924 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:43,924 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:43,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:50:43,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2013915616, now seen corresponding path program 6 times [2022-12-12 12:50:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:43,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039430134] [2022-12-12 12:50:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:44,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039430134] [2022-12-12 12:50:44,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039430134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:44,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:44,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:50:44,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455578714] [2022-12-12 12:50:44,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:50:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:50:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:50:44,332 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-12-12 12:50:44,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 179 transitions, 1121 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2022-12-12 12:50:44,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:44,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-12-12 12:50:44,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:44,482 INFO L130 PetriNetUnfolder]: 80/362 cut-off events. [2022-12-12 12:50:44,483 INFO L131 PetriNetUnfolder]: For 761/829 co-relation queries the response was YES. [2022-12-12 12:50:44,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 362 events. 80/362 cut-off events. For 761/829 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1569 event pairs, 17 based on Foata normal form. 12/365 useless extension candidates. Maximal degree in co-relation 803. Up to 140 conditions per place. [2022-12-12 12:50:44,484 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 38 selfloop transitions, 5 changer transitions 62/171 dead transitions. [2022-12-12 12:50:44,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 171 transitions, 1245 flow [2022-12-12 12:50:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:50:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:50:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 605 transitions. [2022-12-12 12:50:44,487 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7487623762376238 [2022-12-12 12:50:44,490 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 39 predicate places. [2022-12-12 12:50:44,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 171 transitions, 1245 flow [2022-12-12 12:50:44,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 171 transitions, 1131 flow, removed 52 selfloop flow, removed 3 redundant places. [2022-12-12 12:50:44,494 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 1131 flow [2022-12-12 12:50:44,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 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) [2022-12-12 12:50:44,495 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:44,495 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:50:44,495 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash -154392724, now seen corresponding path program 7 times [2022-12-12 12:50:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:44,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821021245] [2022-12-12 12:50:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:44,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:44,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821021245] [2022-12-12 12:50:44,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821021245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:44,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:44,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 12:50:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86247150] [2022-12-12 12:50:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 12:50:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:44,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 12:50:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-12 12:50:44,923 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-12-12 12:50:44,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 1131 flow. Second operand has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 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) [2022-12-12 12:50:44,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:44,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-12-12 12:50:44,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:45,066 INFO L130 PetriNetUnfolder]: 85/387 cut-off events. [2022-12-12 12:50:45,066 INFO L131 PetriNetUnfolder]: For 1060/1142 co-relation queries the response was YES. [2022-12-12 12:50:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 387 events. 85/387 cut-off events. For 1060/1142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1765 event pairs, 17 based on Foata normal form. 11/389 useless extension candidates. Maximal degree in co-relation 856. Up to 162 conditions per place. [2022-12-12 12:50:45,069 INFO L137 encePairwiseOnDemand]: 91/101 looper letters, 37 selfloop transitions, 12 changer transitions 71/186 dead transitions. [2022-12-12 12:50:45,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 186 transitions, 1533 flow [2022-12-12 12:50:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:50:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:50:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 605 transitions. [2022-12-12 12:50:45,071 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7487623762376238 [2022-12-12 12:50:45,071 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 43 predicate places. [2022-12-12 12:50:45,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 186 transitions, 1533 flow [2022-12-12 12:50:45,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 186 transitions, 1278 flow, removed 116 selfloop flow, removed 4 redundant places. [2022-12-12 12:50:45,076 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 186 transitions, 1278 flow [2022-12-12 12:50:45,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 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) [2022-12-12 12:50:45,077 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:45,077 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:50:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:50:45,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1633722308, now seen corresponding path program 8 times [2022-12-12 12:50:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:45,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900439060] [2022-12-12 12:50:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:45,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900439060] [2022-12-12 12:50:45,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900439060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:45,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:45,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-12 12:50:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406257405] [2022-12-12 12:50:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:45,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-12 12:50:45,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-12 12:50:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-12 12:50:45,543 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-12-12 12:50:45,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 186 transitions, 1278 flow. Second operand has 9 states, 9 states have (on average 72.88888888888889) internal successors, (656), 9 states have internal predecessors, (656), 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) [2022-12-12 12:50:45,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:45,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-12-12 12:50:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:45,686 INFO L130 PetriNetUnfolder]: 64/286 cut-off events. [2022-12-12 12:50:45,686 INFO L131 PetriNetUnfolder]: For 818/875 co-relation queries the response was YES. [2022-12-12 12:50:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 286 events. 64/286 cut-off events. For 818/875 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1146 event pairs, 10 based on Foata normal form. 12/294 useless extension candidates. Maximal degree in co-relation 633. Up to 111 conditions per place. [2022-12-12 12:50:45,687 INFO L137 encePairwiseOnDemand]: 91/101 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2022-12-12 12:50:45,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 164 transitions, 1308 flow [2022-12-12 12:50:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 12:50:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 12:50:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 746 transitions. [2022-12-12 12:50:45,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7386138613861386 [2022-12-12 12:50:45,690 INFO L295 CegarLoopForPetriNet]: 96 programPoint places, 41 predicate places. [2022-12-12 12:50:45,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 164 transitions, 1308 flow [2022-12-12 12:50:45,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 164 transitions, 1102 flow, removed 93 selfloop flow, removed 6 redundant places. [2022-12-12 12:50:45,695 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 164 transitions, 1102 flow [2022-12-12 12:50:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.88888888888889) internal successors, (656), 9 states have internal predecessors, (656), 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) [2022-12-12 12:50:45,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 12:50:45,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 12:50:45,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 12:50:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 12:50:45,699 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2022-12-12 12:50:45,701 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:50:45,701 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:50:45,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:50:45 BasicIcfg [2022-12-12 12:50:45,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:50:45,706 INFO L158 Benchmark]: Toolchain (without parser) took 6066.11ms. Allocated memory was 185.6MB in the beginning and 310.4MB in the end (delta: 124.8MB). Free memory was 160.4MB in the beginning and 180.1MB in the end (delta: -19.7MB). Peak memory consumption was 106.1MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,706 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 161.3MB in the beginning and 161.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:50:45,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.12ms. Allocated memory is still 185.6MB. Free memory was 160.4MB in the beginning and 145.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.89ms. Allocated memory is still 185.6MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,707 INFO L158 Benchmark]: Boogie Preprocessor took 36.91ms. Allocated memory is still 185.6MB. Free memory was 143.1MB in the beginning and 142.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,707 INFO L158 Benchmark]: RCFGBuilder took 448.30ms. Allocated memory is still 185.6MB. Free memory was 142.1MB in the beginning and 123.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,707 INFO L158 Benchmark]: TraceAbstraction took 5257.30ms. Allocated memory was 185.6MB in the beginning and 310.4MB in the end (delta: 124.8MB). Free memory was 122.7MB in the beginning and 180.1MB in the end (delta: -57.5MB). Peak memory consumption was 68.4MB. Max. memory is 8.0GB. [2022-12-12 12:50:45,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 161.3MB in the beginning and 161.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.12ms. Allocated memory is still 185.6MB. Free memory was 160.4MB in the beginning and 145.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.89ms. Allocated memory is still 185.6MB. Free memory was 145.2MB in the beginning and 143.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.91ms. Allocated memory is still 185.6MB. Free memory was 143.1MB in the beginning and 142.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 448.30ms. Allocated memory is still 185.6MB. Free memory was 142.1MB in the beginning and 123.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 5257.30ms. Allocated memory was 185.6MB in the beginning and 310.4MB in the end (delta: 124.8MB). Free memory was 122.7MB in the beginning and 180.1MB in the end (delta: -57.5MB). Peak memory consumption was 68.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 126 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 322 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 211 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1139 IncrementalHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 111 mSDtfsCounter, 1139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1278occurred in iteration=7, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 791 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 696 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 2154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 12:50:45,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...