/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:15:24,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:15:24,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:15:24,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:15:24,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:15:24,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:15:24,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:15:24,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:15:24,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:15:24,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:15:24,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:15:24,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:15:24,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:15:24,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:15:24,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:15:24,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:15:24,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:15:24,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:15:24,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:15:24,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:15:24,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:15:24,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:15:24,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:15:24,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:15:24,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:15:24,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:15:24,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:15:24,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:15:24,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:15:24,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:15:24,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:15:24,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:15:24,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:15:24,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:15:24,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:15:24,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:15:24,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:15:24,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:15:24,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:15:24,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:15:24,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:15:24,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:15:24,959 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:15:24,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:15:24,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:15:24,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:15:24,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:15:24,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:15:24,962 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:15:24,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:15:24,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:15:24,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:15:24,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:15:24,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:15:24,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:15:24,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:15:24,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:15:24,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:15:24,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:15:24,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:15:24,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:15:24,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:15:25,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:15:25,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:15:25,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:15:25,271 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:15:25,271 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:15:25,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2022-12-06 16:15:26,273 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:15:26,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:15:26,471 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2022-12-06 16:15:26,486 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5441abdf/76566692bf664446a475827419c3c4d4/FLAG90380fb5b [2022-12-06 16:15:26,499 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5441abdf/76566692bf664446a475827419c3c4d4 [2022-12-06 16:15:26,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:15:26,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:15:26,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:15:26,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:15:26,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:15:26,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b312bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26, skipping insertion in model container [2022-12-06 16:15:26,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:15:26,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:15:26,654 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 16:15:26,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,769 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-atomic/szymanski.i[31505,31518] [2022-12-06 16:15:26,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,781 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-atomic/szymanski.i[32915,32928] [2022-12-06 16:15:26,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:15:26,795 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:15:26,811 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-06 16:15:26,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,834 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-atomic/szymanski.i[31505,31518] [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,844 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-atomic/szymanski.i[32915,32928] [2022-12-06 16:15:26,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 16:15:26,847 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 16:15:26,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:15:26,881 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:15:26,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26 WrapperNode [2022-12-06 16:15:26,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:15:26,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:15:26,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:15:26,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:15:26,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,923 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-12-06 16:15:26,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:15:26,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:15:26,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:15:26,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:15:26,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:15:26,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:15:26,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:15:26,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:15:26,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (1/1) ... [2022-12-06 16:15:26,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:15:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:15:26,983 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) [2022-12-06 16:15:26,999 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 [2022-12-06 16:15:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:15:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-06 16:15:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-06 16:15:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-06 16:15:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-06 16:15:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:15:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 16:15:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:15:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:15:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:15:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:15:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 16:15:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:15:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:15:27,021 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:15:27,117 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:15:27,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:15:27,284 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:15:27,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:15:27,288 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-06 16:15:27,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:15:27 BoogieIcfgContainer [2022-12-06 16:15:27,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:15:27,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:15:27,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:15:27,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:15:27,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:15:26" (1/3) ... [2022-12-06 16:15:27,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e86c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:15:27, skipping insertion in model container [2022-12-06 16:15:27,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:15:26" (2/3) ... [2022-12-06 16:15:27,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e86c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:15:27, skipping insertion in model container [2022-12-06 16:15:27,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:15:27" (3/3) ... [2022-12-06 16:15:27,295 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-12-06 16:15:27,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:15:27,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-06 16:15:27,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:15:27,351 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 16:15:27,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 242 flow [2022-12-06 16:15:27,425 INFO L130 PetriNetUnfolder]: 20/111 cut-off events. [2022-12-06 16:15:27,425 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 16:15:27,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 20/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-12-06 16:15:27,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 242 flow [2022-12-06 16:15:27,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 102 transitions, 213 flow [2022-12-06 16:15:27,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:15:27,446 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;@64df84df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:15:27,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-06 16:15:27,456 INFO L130 PetriNetUnfolder]: 11/67 cut-off events. [2022-12-06 16:15:27,456 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:15:27,457 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:15:27,457 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:15:27,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-06 16:15:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:15:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 376000553, now seen corresponding path program 1 times [2022-12-06 16:15:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:15:27,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782633168] [2022-12-06 16:15:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:15:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:15:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:15:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:15:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:15:27,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782633168] [2022-12-06 16:15:27,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782633168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:15:27,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:15:27,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:15:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499850978] [2022-12-06 16:15:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:15:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:15:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:15:27,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:15:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:15:27,682 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2022-12-06 16:15:27,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2022-12-06 16:15:27,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:15:27,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2022-12-06 16:15:27,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:27,754 INFO L130 PetriNetUnfolder]: 34/210 cut-off events. [2022-12-06 16:15:27,754 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-06 16:15:27,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 210 events. 34/210 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 704 event pairs, 4 based on Foata normal form. 49/228 useless extension candidates. Maximal degree in co-relation 203. Up to 24 conditions per place. [2022-12-06 16:15:27,757 INFO L137 encePairwiseOnDemand]: 98/113 looper letters, 11 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2022-12-06 16:15:27,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 232 flow [2022-12-06 16:15:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:15:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:15:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2022-12-06 16:15:27,766 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9085545722713865 [2022-12-06 16:15:27,769 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2022-12-06 16:15:27,769 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 232 flow [2022-12-06 16:15:27,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2022-12-06 16:15:27,769 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:15:27,769 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:15:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:15:27,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-06 16:15:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:15:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash -89112021, now seen corresponding path program 1 times [2022-12-06 16:15:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:15:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122500677] [2022-12-06 16:15:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:15:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:15:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:15:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:15:27,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:15:27,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122500677] [2022-12-06 16:15:27,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122500677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:15:27,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:15:27,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:15:27,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735190356] [2022-12-06 16:15:27,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:15:27,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:15:27,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:15:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:15:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:15:27,900 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2022-12-06 16:15:27,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2022-12-06 16:15:27,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:15:27,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2022-12-06 16:15:27,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:27,953 INFO L130 PetriNetUnfolder]: 27/188 cut-off events. [2022-12-06 16:15:27,953 INFO L131 PetriNetUnfolder]: For 44/50 co-relation queries the response was YES. [2022-12-06 16:15:27,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 188 events. 27/188 cut-off events. For 44/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 584 event pairs, 5 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 199. Up to 22 conditions per place. [2022-12-06 16:15:27,955 INFO L137 encePairwiseOnDemand]: 109/113 looper letters, 10 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2022-12-06 16:15:27,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 94 transitions, 248 flow [2022-12-06 16:15:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:15:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:15:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2022-12-06 16:15:27,958 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.855457227138643 [2022-12-06 16:15:27,958 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 4 predicate places. [2022-12-06 16:15:27,958 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 248 flow [2022-12-06 16:15:27,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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) [2022-12-06 16:15:27,959 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:15:27,959 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:15:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:15:27,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-06 16:15:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:15:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1172691303, now seen corresponding path program 1 times [2022-12-06 16:15:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:15:27,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887988671] [2022-12-06 16:15:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:15:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:15:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:15:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:15:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:15:28,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887988671] [2022-12-06 16:15:28,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887988671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:15:28,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:15:28,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 16:15:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257696452] [2022-12-06 16:15:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:15:28,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 16:15:28,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:15:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 16:15:28,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 16:15:28,061 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 113 [2022-12-06 16:15:28,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:15:28,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 113 [2022-12-06 16:15:28,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:28,241 INFO L130 PetriNetUnfolder]: 200/698 cut-off events. [2022-12-06 16:15:28,241 INFO L131 PetriNetUnfolder]: For 407/411 co-relation queries the response was YES. [2022-12-06 16:15:28,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 698 events. 200/698 cut-off events. For 407/411 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4174 event pairs, 77 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 1156. Up to 223 conditions per place. [2022-12-06 16:15:28,246 INFO L137 encePairwiseOnDemand]: 96/113 looper letters, 33 selfloop transitions, 6 changer transitions 33/137 dead transitions. [2022-12-06 16:15:28,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 499 flow [2022-12-06 16:15:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:15:28,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:15:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2022-12-06 16:15:28,257 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7964601769911505 [2022-12-06 16:15:28,257 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2022-12-06 16:15:28,258 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 137 transitions, 499 flow [2022-12-06 16:15:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,258 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:15:28,258 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:15:28,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:15:28,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-06 16:15:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:15:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash -514435635, now seen corresponding path program 2 times [2022-12-06 16:15:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:15:28,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538295155] [2022-12-06 16:15:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:15:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:15:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:15:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:15:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:15:28,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538295155] [2022-12-06 16:15:28,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538295155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:15:28,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:15:28,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 16:15:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826341978] [2022-12-06 16:15:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:15:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 16:15:28,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:15:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 16:15:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 16:15:28,325 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 113 [2022-12-06 16:15:28,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 137 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:15:28,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 113 [2022-12-06 16:15:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:28,568 INFO L130 PetriNetUnfolder]: 487/1403 cut-off events. [2022-12-06 16:15:28,568 INFO L131 PetriNetUnfolder]: For 1311/1318 co-relation queries the response was YES. [2022-12-06 16:15:28,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1403 events. 487/1403 cut-off events. For 1311/1318 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9973 event pairs, 177 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 2881. Up to 466 conditions per place. [2022-12-06 16:15:28,577 INFO L137 encePairwiseOnDemand]: 96/113 looper letters, 45 selfloop transitions, 14 changer transitions 46/185 dead transitions. [2022-12-06 16:15:28,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 185 transitions, 827 flow [2022-12-06 16:15:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:15:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:15:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2022-12-06 16:15:28,579 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-12-06 16:15:28,583 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 12 predicate places. [2022-12-06 16:15:28,583 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 185 transitions, 827 flow [2022-12-06 16:15:28,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,583 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:15:28,584 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:15:28,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:15:28,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-06 16:15:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:15:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -705001463, now seen corresponding path program 3 times [2022-12-06 16:15:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:15:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353952043] [2022-12-06 16:15:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:15:28,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:15:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:15:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:15:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:15:28,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353952043] [2022-12-06 16:15:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353952043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:15:28,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:15:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 16:15:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811473868] [2022-12-06 16:15:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:15:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 16:15:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:15:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 16:15:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 16:15:28,680 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 113 [2022-12-06 16:15:28,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 185 transitions, 827 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:15:28,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 113 [2022-12-06 16:15:28,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:15:28,878 INFO L130 PetriNetUnfolder]: 561/1604 cut-off events. [2022-12-06 16:15:28,878 INFO L131 PetriNetUnfolder]: For 2204/2285 co-relation queries the response was YES. [2022-12-06 16:15:28,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 1604 events. 561/1604 cut-off events. For 2204/2285 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11658 event pairs, 100 based on Foata normal form. 6/1399 useless extension candidates. Maximal degree in co-relation 3734. Up to 601 conditions per place. [2022-12-06 16:15:28,883 INFO L137 encePairwiseOnDemand]: 95/113 looper letters, 0 selfloop transitions, 0 changer transitions 245/245 dead transitions. [2022-12-06 16:15:28,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 245 transitions, 1474 flow [2022-12-06 16:15:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:15:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:15:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2022-12-06 16:15:28,885 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8017699115044248 [2022-12-06 16:15:28,887 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 12 predicate places. [2022-12-06 16:15:28,887 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 245 transitions, 1474 flow [2022-12-06 16:15:28,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2022-12-06 16:15:28,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-06 16:15:28,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-06 16:15:28,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-06 16:15:28,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-06 16:15:28,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-06 16:15:28,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-06 16:15:28,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:15:28,897 INFO L458 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-12-06 16:15:28,901 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:15:28,901 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:15:28,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:15:28 BasicIcfg [2022-12-06 16:15:28,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:15:28,909 INFO L158 Benchmark]: Toolchain (without parser) took 2407.12ms. Allocated memory was 175.1MB in the beginning and 231.7MB in the end (delta: 56.6MB). Free memory was 139.4MB in the beginning and 89.5MB in the end (delta: 49.9MB). Peak memory consumption was 107.1MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,909 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 152.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:15:28,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.43ms. Allocated memory is still 175.1MB. Free memory was 139.4MB in the beginning and 112.6MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.72ms. Allocated memory is still 175.1MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,910 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 175.1MB. Free memory was 111.0MB in the beginning and 109.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,910 INFO L158 Benchmark]: RCFGBuilder took 331.71ms. Allocated memory is still 175.1MB. Free memory was 109.0MB in the beginning and 94.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,910 INFO L158 Benchmark]: TraceAbstraction took 1617.02ms. Allocated memory was 175.1MB in the beginning and 231.7MB in the end (delta: 56.6MB). Free memory was 94.3MB in the beginning and 89.5MB in the end (delta: 4.8MB). Peak memory consumption was 62.0MB. Max. memory is 8.0GB. [2022-12-06 16:15:28,912 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 175.1MB. Free memory is still 152.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 379.43ms. Allocated memory is still 175.1MB. Free memory was 139.4MB in the beginning and 112.6MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.72ms. Allocated memory is still 175.1MB. Free memory was 112.6MB in the beginning and 111.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 175.1MB. Free memory was 111.0MB in the beginning and 109.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 331.71ms. Allocated memory is still 175.1MB. Free memory was 109.0MB in the beginning and 94.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1617.02ms. Allocated memory was 175.1MB in the beginning and 231.7MB in the end (delta: 56.6MB). Free memory was 94.3MB in the beginning and 89.5MB in the end (delta: 4.8MB). Peak memory consumption was 62.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 132 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1474occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 16:15:28,946 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...