/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-SemanticLbe.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/safe013_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:42:14,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:42:14,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:42:14,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:42:14,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:42:14,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:42:14,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:42:14,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:42:14,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:42:14,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:42:14,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:42:14,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:42:14,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:42:14,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:42:14,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:42:14,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:42:14,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:42:14,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:42:14,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:42:14,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:42:14,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:42:14,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:42:14,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:42:14,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:42:14,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:42:14,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:42:14,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:42:14,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:42:14,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:42:14,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:42:14,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:42:14,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:42:14,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:42:14,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:42:14,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:42:14,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:42:14,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:42:14,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:42:14,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:42:14,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:42:14,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:42:14,943 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-SemanticLbe.epf [2022-12-12 21:42:14,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:42:14,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:42:14,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:42:14,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:42:14,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:42:14,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:42:14,974 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:42:14,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:42:14,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:42:14,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:42:14,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:42:14,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:42:14,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:42:14,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:42:14,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:14,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:42:14,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:42:14,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:42:15,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:42:15,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:42:15,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:42:15,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:42:15,341 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:42:15,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2022-12-12 21:42:16,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:42:16,593 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:42:16,594 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2022-12-12 21:42:16,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb6841cc/4324c7aaf6944c8db9fc940f31e3c330/FLAG745c8ef86 [2022-12-12 21:42:16,618 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb6841cc/4324c7aaf6944c8db9fc940f31e3c330 [2022-12-12 21:42:16,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:42:16,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:42:16,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:16,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:42:16,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:42:16,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:16,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a58e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16, skipping insertion in model container [2022-12-12 21:42:16,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:16,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:42:16,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:42:16,784 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/safe013_tso.i[945,958] [2022-12-12 21:42:16,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:16,880 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:42:16,893 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/safe013_tso.i[945,958] [2022-12-12 21:42:16,915 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,916 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:42:16,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:42:16,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:42:16,962 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:42:16,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16 WrapperNode [2022-12-12 21:42:16,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:42:16,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:16,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:42:16,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:42:16,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:16,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,012 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 21:42:17,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:42:17,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:42:17,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:42:17,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:42:17,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:42:17,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:42:17,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:42:17,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:42:17,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (1/1) ... [2022-12-12 21:42:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:42:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:42:17,102 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 21:42:17,127 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 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:42:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:42:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:42:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:42:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:42:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:42:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:42:17,154 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 21:42:17,300 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:42:17,302 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:42:17,397 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:42:17,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:42:17,402 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:42:17,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:17 BoogieIcfgContainer [2022-12-12 21:42:17,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:42:17,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:42:17,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:42:17,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:42:17,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:42:16" (1/3) ... [2022-12-12 21:42:17,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d337140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:17, skipping insertion in model container [2022-12-12 21:42:17,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:42:16" (2/3) ... [2022-12-12 21:42:17,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d337140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:42:17, skipping insertion in model container [2022-12-12 21:42:17,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:42:17" (3/3) ... [2022-12-12 21:42:17,409 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2022-12-12 21:42:17,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:42:17,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 21:42:17,422 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:42:17,456 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:42:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 21:42:17,533 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 21:42:17,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 21:42:17,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 21:42:17,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:17,543 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:42:17,566 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:17,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:17,595 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-12 21:42:17,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:17,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 21:42:17,598 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 21:42:17,598 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 21:42:19,404 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-12 21:42:19,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:42:19,419 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;@56a4b2b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:42:19,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 21:42:19,423 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2022-12-12 21:42:19,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:42:19,423 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:19,424 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:19,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:19,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 225880474, now seen corresponding path program 1 times [2022-12-12 21:42:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:19,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189210347] [2022-12-12 21:42:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:19,824 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 21:42:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:19,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189210347] [2022-12-12 21:42:19,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189210347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:19,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:19,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083554134] [2022-12-12 21:42:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:19,859 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:19,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 21:42:19,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:19,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:19,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:20,043 INFO L130 PetriNetUnfolder]: 869/1452 cut-off events. [2022-12-12 21:42:20,043 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-12 21:42:20,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1452 events. 869/1452 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8572 event pairs, 316 based on Foata normal form. 64/1181 useless extension candidates. Maximal degree in co-relation 2858. Up to 886 conditions per place. [2022-12-12 21:42:20,056 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 29 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-12-12 21:42:20,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 165 flow [2022-12-12 21:42:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-12-12 21:42:20,063 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-12-12 21:42:20,067 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-12 21:42:20,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 41 transitions, 165 flow [2022-12-12 21:42:20,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 41 transitions, 165 flow [2022-12-12 21:42:20,073 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 165 flow [2022-12-12 21:42:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 21:42:20,074 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:20,074 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:20,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:42:20,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1587639342, now seen corresponding path program 1 times [2022-12-12 21:42:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:20,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428491373] [2022-12-12 21:42:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:20,212 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 21:42:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:20,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428491373] [2022-12-12 21:42:20,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428491373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:20,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:20,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 21:42:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498890214] [2022-12-12 21:42:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:20,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 21:42:20,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 21:42:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 21:42:20,215 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2022-12-12 21:42:20,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 21:42:20,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:20,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2022-12-12 21:42:20,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:20,342 INFO L130 PetriNetUnfolder]: 829/1414 cut-off events. [2022-12-12 21:42:20,343 INFO L131 PetriNetUnfolder]: For 180/186 co-relation queries the response was YES. [2022-12-12 21:42:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 1414 events. 829/1414 cut-off events. For 180/186 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8236 event pairs, 69 based on Foata normal form. 16/1103 useless extension candidates. Maximal degree in co-relation 3904. Up to 957 conditions per place. [2022-12-12 21:42:20,348 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 39 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2022-12-12 21:42:20,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 293 flow [2022-12-12 21:42:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 21:42:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 21:42:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 21:42:20,350 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2022-12-12 21:42:20,350 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-12-12 21:42:20,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 52 transitions, 293 flow [2022-12-12 21:42:20,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 52 transitions, 293 flow [2022-12-12 21:42:20,355 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 52 transitions, 293 flow [2022-12-12 21:42:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 21:42:20,356 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:20,356 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:42:20,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1587639869, now seen corresponding path program 1 times [2022-12-12 21:42:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:20,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586358296] [2022-12-12 21:42:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:20,468 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 21:42:20,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:20,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586358296] [2022-12-12 21:42:20,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586358296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:20,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:20,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664225237] [2022-12-12 21:42:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:20,473 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-12 21:42:20,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 21:42:20,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:20,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-12 21:42:20,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:20,618 INFO L130 PetriNetUnfolder]: 801/1366 cut-off events. [2022-12-12 21:42:20,619 INFO L131 PetriNetUnfolder]: For 179/197 co-relation queries the response was YES. [2022-12-12 21:42:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5047 conditions, 1366 events. 801/1366 cut-off events. For 179/197 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7909 event pairs, 57 based on Foata normal form. 6/1053 useless extension candidates. Maximal degree in co-relation 5030. Up to 917 conditions per place. [2022-12-12 21:42:20,629 INFO L137 encePairwiseOnDemand]: 22/27 looper letters, 43 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2022-12-12 21:42:20,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 421 flow [2022-12-12 21:42:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-12-12 21:42:20,632 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 21:42:20,634 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 21:42:20,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 57 transitions, 421 flow [2022-12-12 21:42:20,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 57 transitions, 421 flow [2022-12-12 21:42:20,644 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 57 transitions, 421 flow [2022-12-12 21:42:20,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 21:42:20,644 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:20,644 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:42:20,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1972179317, now seen corresponding path program 1 times [2022-12-12 21:42:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:20,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878723025] [2022-12-12 21:42:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:20,775 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 21:42:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:20,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878723025] [2022-12-12 21:42:20,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878723025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:20,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:20,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363410300] [2022-12-12 21:42:20,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:20,780 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:20,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 57 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 21:42:20,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:20,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:20,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:20,981 INFO L130 PetriNetUnfolder]: 1122/1879 cut-off events. [2022-12-12 21:42:20,981 INFO L131 PetriNetUnfolder]: For 894/894 co-relation queries the response was YES. [2022-12-12 21:42:20,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1879 events. 1122/1879 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9961 event pairs, 79 based on Foata normal form. 20/1510 useless extension candidates. Maximal degree in co-relation 8272. Up to 1154 conditions per place. [2022-12-12 21:42:20,993 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 77 selfloop transitions, 18 changer transitions 4/105 dead transitions. [2022-12-12 21:42:20,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 105 transitions, 985 flow [2022-12-12 21:42:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2022-12-12 21:42:20,996 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2022-12-12 21:42:20,998 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-12 21:42:20,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 105 transitions, 985 flow [2022-12-12 21:42:21,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 101 transitions, 945 flow [2022-12-12 21:42:21,008 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 101 transitions, 945 flow [2022-12-12 21:42:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 21:42:21,009 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:21,009 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:21,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:42:21,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1972195127, now seen corresponding path program 2 times [2022-12-12 21:42:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:21,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043633821] [2022-12-12 21:42:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:21,099 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 21:42:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:21,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043633821] [2022-12-12 21:42:21,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043633821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:21,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:21,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240432157] [2022-12-12 21:42:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:21,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:21,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:21,101 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:21,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 101 transitions, 945 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 21:42:21,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:21,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:21,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:21,316 INFO L130 PetriNetUnfolder]: 1295/2236 cut-off events. [2022-12-12 21:42:21,316 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2022-12-12 21:42:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11944 conditions, 2236 events. 1295/2236 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12993 event pairs, 30 based on Foata normal form. 80/1809 useless extension candidates. Maximal degree in co-relation 11921. Up to 1441 conditions per place. [2022-12-12 21:42:21,335 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 51 selfloop transitions, 9 changer transitions 52/118 dead transitions. [2022-12-12 21:42:21,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 118 transitions, 1333 flow [2022-12-12 21:42:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2022-12-12 21:42:21,337 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2022-12-12 21:42:21,339 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-12-12 21:42:21,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 118 transitions, 1333 flow [2022-12-12 21:42:21,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 66 transitions, 729 flow [2022-12-12 21:42:21,346 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 729 flow [2022-12-12 21:42:21,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 21:42:21,347 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:21,347 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:21,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:42:21,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash -105416366, now seen corresponding path program 1 times [2022-12-12 21:42:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:21,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102717817] [2022-12-12 21:42:21,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:21,440 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 21:42:21,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102717817] [2022-12-12 21:42:21,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102717817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:21,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:21,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:42:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311581598] [2022-12-12 21:42:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:21,441 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:21,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 21:42:21,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:21,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:21,675 INFO L130 PetriNetUnfolder]: 1482/2415 cut-off events. [2022-12-12 21:42:21,675 INFO L131 PetriNetUnfolder]: For 4448/4487 co-relation queries the response was YES. [2022-12-12 21:42:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14039 conditions, 2415 events. 1482/2415 cut-off events. For 4448/4487 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 13436 event pairs, 204 based on Foata normal form. 117/1966 useless extension candidates. Maximal degree in co-relation 14013. Up to 1630 conditions per place. [2022-12-12 21:42:21,688 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 61 selfloop transitions, 26 changer transitions 65/163 dead transitions. [2022-12-12 21:42:21,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 163 transitions, 2119 flow [2022-12-12 21:42:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:42:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:42:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-12 21:42:21,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2022-12-12 21:42:21,690 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-12 21:42:21,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 163 transitions, 2119 flow [2022-12-12 21:42:21,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 98 transitions, 1269 flow [2022-12-12 21:42:21,700 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 98 transitions, 1269 flow [2022-12-12 21:42:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 21:42:21,700 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:21,700 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:21,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:42:21,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1162557445, now seen corresponding path program 1 times [2022-12-12 21:42:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836978544] [2022-12-12 21:42:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:21,785 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 21:42:21,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:21,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836978544] [2022-12-12 21:42:21,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836978544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:21,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:21,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:21,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597674589] [2022-12-12 21:42:21,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:21,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:42:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:42:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:42:21,787 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:21,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 98 transitions, 1269 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 21:42:21,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:21,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:21,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:21,967 INFO L130 PetriNetUnfolder]: 1045/1841 cut-off events. [2022-12-12 21:42:21,967 INFO L131 PetriNetUnfolder]: For 4024/4174 co-relation queries the response was YES. [2022-12-12 21:42:21,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12451 conditions, 1841 events. 1045/1841 cut-off events. For 4024/4174 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10796 event pairs, 47 based on Foata normal form. 174/1620 useless extension candidates. Maximal degree in co-relation 12422. Up to 1616 conditions per place. [2022-12-12 21:42:21,978 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 54 selfloop transitions, 41 changer transitions 56/162 dead transitions. [2022-12-12 21:42:21,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 162 transitions, 2380 flow [2022-12-12 21:42:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:42:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:42:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2022-12-12 21:42:21,979 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2022-12-12 21:42:21,980 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2022-12-12 21:42:21,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 162 transitions, 2380 flow [2022-12-12 21:42:21,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 106 transitions, 1544 flow [2022-12-12 21:42:21,988 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 106 transitions, 1544 flow [2022-12-12 21:42:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 21:42:21,988 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:21,988 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:21,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 21:42:21,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1449968936, now seen corresponding path program 1 times [2022-12-12 21:42:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:21,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120510342] [2022-12-12 21:42:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:22,057 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 21:42:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120510342] [2022-12-12 21:42:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120510342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:22,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:42:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687526072] [2022-12-12 21:42:22,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:42:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:42:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:42:22,059 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 21:42:22,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 106 transitions, 1544 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 21:42:22,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:22,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 21:42:22,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:22,196 INFO L130 PetriNetUnfolder]: 753/1519 cut-off events. [2022-12-12 21:42:22,196 INFO L131 PetriNetUnfolder]: For 5306/5371 co-relation queries the response was YES. [2022-12-12 21:42:22,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11250 conditions, 1519 events. 753/1519 cut-off events. For 5306/5371 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9845 event pairs, 18 based on Foata normal form. 78/1321 useless extension candidates. Maximal degree in co-relation 11218. Up to 1309 conditions per place. [2022-12-12 21:42:22,202 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 84 selfloop transitions, 4 changer transitions 61/164 dead transitions. [2022-12-12 21:42:22,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 164 transitions, 2786 flow [2022-12-12 21:42:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:42:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:42:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2022-12-12 21:42:22,204 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6203703703703703 [2022-12-12 21:42:22,204 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2022-12-12 21:42:22,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 164 transitions, 2786 flow [2022-12-12 21:42:22,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 103 transitions, 1703 flow [2022-12-12 21:42:22,209 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 103 transitions, 1703 flow [2022-12-12 21:42:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 21:42:22,209 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:42:22,209 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:22,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 21:42:22,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:42:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:42:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1155697349, now seen corresponding path program 1 times [2022-12-12 21:42:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:42:22,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442501984] [2022-12-12 21:42:22,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:42:22,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:42:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:42:22,281 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 21:42:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:42:22,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442501984] [2022-12-12 21:42:22,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442501984] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:42:22,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:42:22,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:42:22,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86452990] [2022-12-12 21:42:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:42:22,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:42:22,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:42:22,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:42:22,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:42:22,283 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:42:22,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 103 transitions, 1703 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:22,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:42:22,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:42:22,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:42:22,400 INFO L130 PetriNetUnfolder]: 280/760 cut-off events. [2022-12-12 21:42:22,400 INFO L131 PetriNetUnfolder]: For 3804/3938 co-relation queries the response was YES. [2022-12-12 21:42:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6299 conditions, 760 events. 280/760 cut-off events. For 3804/3938 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5306 event pairs, 0 based on Foata normal form. 87/720 useless extension candidates. Maximal degree in co-relation 6264. Up to 639 conditions per place. [2022-12-12 21:42:22,402 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2022-12-12 21:42:22,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 2027 flow [2022-12-12 21:42:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 21:42:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 21:42:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2022-12-12 21:42:22,404 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2022-12-12 21:42:22,404 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-12-12 21:42:22,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 111 transitions, 2027 flow [2022-12-12 21:42:22,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:22,406 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 21:42:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 21:42:22,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 21:42:22,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 21:42:22,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 21:42:22,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 21:42:22,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 21:42:22,409 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:42:22,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:42:22,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:42:22,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:42:22 BasicIcfg [2022-12-12 21:42:22,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:42:22,416 INFO L158 Benchmark]: Toolchain (without parser) took 5793.41ms. Allocated memory was 196.1MB in the beginning and 296.7MB in the end (delta: 100.7MB). Free memory was 171.2MB in the beginning and 130.0MB in the end (delta: 41.3MB). Peak memory consumption was 143.3MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,416 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:42:22,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.64ms. Allocated memory is still 196.1MB. Free memory was 171.2MB in the beginning and 147.4MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.24ms. Allocated memory is still 196.1MB. Free memory was 147.4MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,417 INFO L158 Benchmark]: Boogie Preprocessor took 27.73ms. Allocated memory is still 196.1MB. Free memory was 145.3MB in the beginning and 144.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,417 INFO L158 Benchmark]: RCFGBuilder took 360.56ms. Allocated memory is still 196.1MB. Free memory was 144.3MB in the beginning and 130.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,419 INFO L158 Benchmark]: TraceAbstraction took 5009.57ms. Allocated memory was 196.1MB in the beginning and 296.7MB in the end (delta: 100.7MB). Free memory was 129.1MB in the beginning and 130.0MB in the end (delta: -868.9kB). Peak memory consumption was 101.4MB. Max. memory is 8.0GB. [2022-12-12 21:42:22,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory is still 172.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 340.64ms. Allocated memory is still 196.1MB. Free memory was 171.2MB in the beginning and 147.4MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.24ms. Allocated memory is still 196.1MB. Free memory was 147.4MB in the beginning and 145.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.73ms. Allocated memory is still 196.1MB. Free memory was 145.3MB in the beginning and 144.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 360.56ms. Allocated memory is still 196.1MB. Free memory was 144.3MB in the beginning and 130.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5009.57ms. Allocated memory was 196.1MB in the beginning and 296.7MB in the end (delta: 100.7MB). Free memory was 129.1MB in the beginning and 130.0MB in the end (delta: -868.9kB). Peak memory consumption was 101.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 79 PlacesBefore, 36 PlacesAfterwards, 70 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1151, independent: 1096, independent conditional: 1096, independent unconditional: 0, dependent: 55, dependent conditional: 55, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1151, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1151, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1151, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 820, independent: 784, independent conditional: 0, independent unconditional: 784, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 820, independent: 739, independent conditional: 0, independent unconditional: 739, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 81, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1151, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 820, unknown conditional: 0, unknown unconditional: 820] , Statistics on independence cache: Total cache size (in pairs): 1123, Positive cache size: 1087, Positive conditional cache size: 0, Positive unconditional cache size: 1087, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 18]: 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 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 214 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 214 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 594 IncrementalHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 15 mSDtfsCounter, 594 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1703occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 5440 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 21:42:22,450 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...