./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:36:58,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:36:58,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:36:58,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:36:58,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:36:58,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:36:58,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:36:58,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:36:58,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:36:58,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:36:58,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:36:58,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:36:58,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:36:58,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:36:58,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:36:58,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:36:58,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:36:58,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:36:58,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:36:58,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:36:58,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:36:58,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:36:58,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:36:58,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:36:58,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:36:58,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:36:58,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:36:58,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:36:58,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:36:58,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:36:58,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:36:58,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:36:58,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:36:58,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:36:58,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:36:58,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:36:58,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:36:58,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:36:58,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:36:58,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:36:58,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:36:58,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:36:58,941 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:36:58,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:36:58,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:36:58,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:36:58,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:36:58,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:36:58,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:36:58,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:36:58,943 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:36:58,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:36:58,944 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:36:58,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:36:58,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:36:58,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:36:58,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:36:58,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:36:58,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:36:58,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:36:58,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:36:58,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:36:58,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:36:58,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:36:58,947 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:36:58,948 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30012893862a7e15af8bbbaf0239dbd2e8b93523943e1ee06536b5f9fb75a514 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:36:59,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:36:59,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:36:59,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:36:59,178 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:36:59,179 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:36:59,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-08-30 23:37:00,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:37:00,459 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:37:00,460 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-08-30 23:37:00,488 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1333709ef/bdc7d00250b240659989a43015921915/FLAG7521612b8 [2023-08-30 23:37:00,497 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1333709ef/bdc7d00250b240659989a43015921915 [2023-08-30 23:37:00,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:37:00,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:37:00,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:37:00,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:37:00,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:37:00,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:37:00" (1/1) ... [2023-08-30 23:37:00,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275a8a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:00, skipping insertion in model container [2023-08-30 23:37:00,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:37:00" (1/1) ... [2023-08-30 23:37:00,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:37:00,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:37:00,859 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2023-08-30 23:37:03,199 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:37:03,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:37:03,538 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:37:03,547 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2023-08-30 23:37:03,715 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:37:03,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:37:04,092 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,092 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,092 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,092 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,092 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,093 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,093 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:04,097 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:37:04,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04 WrapperNode [2023-08-30 23:37:04,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:37:04,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:37:04,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:37:04,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:37:04,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,214 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 19, statements flattened = 323 [2023-08-30 23:37:04,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:37:04,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:37:04,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:37:04,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:37:04,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:37:04,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:37:04,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:37:04,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:37:04,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (1/1) ... [2023-08-30 23:37:04,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:37:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:37:04,308 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) [2023-08-30 23:37:04,328 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 [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2023-08-30 23:37:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:37:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:37:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2023-08-30 23:37:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:37:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:37:04,338 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:37:04,652 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:37:04,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:37:04,924 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:37:04,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:37:04,942 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 23:37:04,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:04 BoogieIcfgContainer [2023-08-30 23:37:04,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:37:04,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:37:04,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:37:04,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:37:04,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:37:00" (1/3) ... [2023-08-30 23:37:04,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9316aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:37:04, skipping insertion in model container [2023-08-30 23:37:04,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:04" (2/3) ... [2023-08-30 23:37:04,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9316aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:37:04, skipping insertion in model container [2023-08-30 23:37:04,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:04" (3/3) ... [2023-08-30 23:37:04,949 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-08-30 23:37:04,954 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:37:04,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:37:04,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:37:04,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:37:05,033 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:37:05,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 339 transitions, 694 flow [2023-08-30 23:37:05,122 INFO L130 PetriNetUnfolder]: 11/337 cut-off events. [2023-08-30 23:37:05,122 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:37:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 11/337 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 282. Up to 4 conditions per place. [2023-08-30 23:37:05,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 339 transitions, 694 flow [2023-08-30 23:37:05,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 329 transitions, 667 flow [2023-08-30 23:37:05,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:37:05,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 329 transitions, 667 flow [2023-08-30 23:37:05,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 329 transitions, 667 flow [2023-08-30 23:37:05,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 329 transitions, 667 flow [2023-08-30 23:37:05,261 INFO L130 PetriNetUnfolder]: 11/329 cut-off events. [2023-08-30 23:37:05,261 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:37:05,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 329 events. 11/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 290 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 282. Up to 4 conditions per place. [2023-08-30 23:37:05,266 INFO L119 LiptonReduction]: Number of co-enabled transitions 9786 [2023-08-30 23:38:07,285 WARN L222 SmtUtils]: Spent 14.87s on a formula simplification that was a NOOP. DAG size: 491 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:38:20,444 WARN L222 SmtUtils]: Spent 13.15s on a formula simplification that was a NOOP. DAG size: 443 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:38:41,394 WARN L222 SmtUtils]: Spent 20.95s on a formula simplification that was a NOOP. DAG size: 494 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:38:59,533 WARN L222 SmtUtils]: Spent 18.13s on a formula simplification that was a NOOP. DAG size: 446 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:40:37,113 WARN L222 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 552 DAG size of output: 548 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:41:15,450 WARN L222 SmtUtils]: Spent 38.32s on a formula simplification that was a NOOP. DAG size: 496 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:42:56,833 WARN L222 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 559 DAG size of output: 555 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:43:22,411 WARN L222 SmtUtils]: Spent 25.57s on a formula simplification that was a NOOP. DAG size: 503 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:31,877 WARN L222 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 492 DAG size of output: 488 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:44:53,566 WARN L222 SmtUtils]: Spent 21.68s on a formula simplification that was a NOOP. DAG size: 480 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:46:01,829 WARN L222 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 495 DAG size of output: 491 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:46:25,444 WARN L222 SmtUtils]: Spent 23.61s on a formula simplification that was a NOOP. DAG size: 483 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:46:25,453 INFO L134 LiptonReduction]: Checked pairs total: 9091 [2023-08-30 23:46:25,454 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-08-30 23:46:25,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:46:25,466 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=true, 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;@221e796d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:46:25,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 23:46:25,472 INFO L130 PetriNetUnfolder]: 4/16 cut-off events. [2023-08-30 23:46:25,472 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:46:25,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:25,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:46:25,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:25,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1008130679, now seen corresponding path program 1 times [2023-08-30 23:46:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300034484] [2023-08-30 23:46:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:25,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300034484] [2023-08-30 23:46:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300034484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:46:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272472844] [2023-08-30 23:46:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:46:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:46:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:46:26,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 703 [2023-08-30 23:46:26,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 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) [2023-08-30 23:46:26,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:26,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 703 [2023-08-30 23:46:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:26,900 INFO L130 PetriNetUnfolder]: 137/232 cut-off events. [2023-08-30 23:46:26,901 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 23:46:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 232 events. 137/232 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 707 event pairs, 53 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 412. Up to 186 conditions per place. [2023-08-30 23:46:26,902 INFO L137 encePairwiseOnDemand]: 695/703 looper letters, 15 selfloop transitions, 6 changer transitions 8/29 dead transitions. [2023-08-30 23:46:26,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 29 transitions, 131 flow [2023-08-30 23:46:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:46:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:46:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-08-30 23:46:26,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46372688477951635 [2023-08-30 23:46:26,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-08-30 23:46:26,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-08-30 23:46:26,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:26,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-08-30 23:46:26,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2023-08-30 23:46:26,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 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) [2023-08-30 23:46:26,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 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) [2023-08-30 23:46:26,930 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 47 flow. Second operand 3 states and 978 transitions. [2023-08-30 23:46:26,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 29 transitions, 131 flow [2023-08-30 23:46:26,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 29 transitions, 123 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:46:26,933 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 71 flow [2023-08-30 23:46:26,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-08-30 23:46:26,936 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-08-30 23:46:26,936 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 71 flow [2023-08-30 23:46:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 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) [2023-08-30 23:46:26,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:46:26,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:26,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1187279274, now seen corresponding path program 1 times [2023-08-30 23:46:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750241008] [2023-08-30 23:46:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750241008] [2023-08-30 23:46:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750241008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:27,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:46:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359247672] [2023-08-30 23:46:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:27,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:46:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:27,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:46:27,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:46:27,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 703 [2023-08-30 23:46:27,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 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) [2023-08-30 23:46:27,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:27,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 703 [2023-08-30 23:46:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:28,301 INFO L130 PetriNetUnfolder]: 68/124 cut-off events. [2023-08-30 23:46:28,302 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 23:46:28,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 124 events. 68/124 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 3 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 262. Up to 90 conditions per place. [2023-08-30 23:46:28,303 INFO L137 encePairwiseOnDemand]: 695/703 looper letters, 19 selfloop transitions, 9 changer transitions 2/30 dead transitions. [2023-08-30 23:46:28,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 30 transitions, 171 flow [2023-08-30 23:46:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:46:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:46:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1584 transitions. [2023-08-30 23:46:28,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45064011379800856 [2023-08-30 23:46:28,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1584 transitions. [2023-08-30 23:46:28,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1584 transitions. [2023-08-30 23:46:28,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:28,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1584 transitions. [2023-08-30 23:46:28,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.8) internal successors, (1584), 5 states have internal predecessors, (1584), 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) [2023-08-30 23:46:28,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:28,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:28,316 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 71 flow. Second operand 5 states and 1584 transitions. [2023-08-30 23:46:28,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 30 transitions, 171 flow [2023-08-30 23:46:28,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:46:28,317 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 104 flow [2023-08-30 23:46:28,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 23:46:28,318 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-30 23:46:28,318 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 104 flow [2023-08-30 23:46:28,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 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) [2023-08-30 23:46:28,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:28,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:28,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:46:28,320 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:28,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -5231298, now seen corresponding path program 1 times [2023-08-30 23:46:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:28,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701387738] [2023-08-30 23:46:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:29,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701387738] [2023-08-30 23:46:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701387738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:29,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:29,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 23:46:29,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991559542] [2023-08-30 23:46:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:29,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:46:29,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:46:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 23:46:29,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 703 [2023-08-30 23:46:29,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2023-08-30 23:46:29,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:29,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 703 [2023-08-30 23:46:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:30,009 INFO L130 PetriNetUnfolder]: 69/131 cut-off events. [2023-08-30 23:46:30,010 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 23:46:30,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 131 events. 69/131 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 415 event pairs, 7 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 274. Up to 89 conditions per place. [2023-08-30 23:46:30,011 INFO L137 encePairwiseOnDemand]: 697/703 looper letters, 19 selfloop transitions, 6 changer transitions 7/32 dead transitions. [2023-08-30 23:46:30,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 212 flow [2023-08-30 23:46:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:46:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:46:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1599 transitions. [2023-08-30 23:46:30,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549075391180654 [2023-08-30 23:46:30,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1599 transitions. [2023-08-30 23:46:30,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1599 transitions. [2023-08-30 23:46:30,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:30,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1599 transitions. [2023-08-30 23:46:30,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.8) internal successors, (1599), 5 states have internal predecessors, (1599), 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) [2023-08-30 23:46:30,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:30,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:30,023 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 104 flow. Second operand 5 states and 1599 transitions. [2023-08-30 23:46:30,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 212 flow [2023-08-30 23:46:30,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 201 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:46:30,025 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 99 flow [2023-08-30 23:46:30,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2023-08-30 23:46:30,026 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-30 23:46:30,027 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 99 flow [2023-08-30 23:46:30,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2023-08-30 23:46:30,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:30,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:46:30,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:30,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1485686408, now seen corresponding path program 2 times [2023-08-30 23:46:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:30,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499236605] [2023-08-30 23:46:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499236605] [2023-08-30 23:46:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499236605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:30,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:46:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178033529] [2023-08-30 23:46:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:46:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:46:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:46:31,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 703 [2023-08-30 23:46:31,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 312.2857142857143) internal successors, (2186), 7 states have internal predecessors, (2186), 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) [2023-08-30 23:46:31,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:31,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 703 [2023-08-30 23:46:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:31,873 INFO L130 PetriNetUnfolder]: 42/90 cut-off events. [2023-08-30 23:46:31,873 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-30 23:46:31,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 90 events. 42/90 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 5 based on Foata normal form. 6/94 useless extension candidates. Maximal degree in co-relation 190. Up to 52 conditions per place. [2023-08-30 23:46:31,873 INFO L137 encePairwiseOnDemand]: 698/703 looper letters, 17 selfloop transitions, 6 changer transitions 4/27 dead transitions. [2023-08-30 23:46:31,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 187 flow [2023-08-30 23:46:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:46:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:46:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1580 transitions. [2023-08-30 23:46:31,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44950213371266 [2023-08-30 23:46:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1580 transitions. [2023-08-30 23:46:31,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1580 transitions. [2023-08-30 23:46:31,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:31,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1580 transitions. [2023-08-30 23:46:31,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 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) [2023-08-30 23:46:31,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:31,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 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) [2023-08-30 23:46:31,886 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 99 flow. Second operand 5 states and 1580 transitions. [2023-08-30 23:46:31,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 187 flow [2023-08-30 23:46:31,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 177 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 23:46:31,887 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 99 flow [2023-08-30 23:46:31,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-30 23:46:31,888 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2023-08-30 23:46:31,888 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 99 flow [2023-08-30 23:46:31,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.2857142857143) internal successors, (2186), 7 states have internal predecessors, (2186), 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) [2023-08-30 23:46:31,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:31,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:31,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:46:31,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:31,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:31,890 INFO L85 PathProgramCache]: Analyzing trace with hash -315650535, now seen corresponding path program 1 times [2023-08-30 23:46:31,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:31,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396205142] [2023-08-30 23:46:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:32,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396205142] [2023-08-30 23:46:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396205142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:32,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:32,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:46:32,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224200753] [2023-08-30 23:46:32,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:32,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:46:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:46:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:46:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 703 [2023-08-30 23:46:32,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 313.42857142857144) internal successors, (2194), 7 states have internal predecessors, (2194), 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) [2023-08-30 23:46:32,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:32,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 703 [2023-08-30 23:46:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:34,378 INFO L130 PetriNetUnfolder]: 34/78 cut-off events. [2023-08-30 23:46:34,378 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-30 23:46:34,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 78 events. 34/78 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 199 event pairs, 6 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 120. Up to 29 conditions per place. [2023-08-30 23:46:34,379 INFO L137 encePairwiseOnDemand]: 696/703 looper letters, 16 selfloop transitions, 8 changer transitions 7/31 dead transitions. [2023-08-30 23:46:34,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 220 flow [2023-08-30 23:46:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 23:46:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 23:46:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2526 transitions. [2023-08-30 23:46:34,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491465149359886 [2023-08-30 23:46:34,383 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2526 transitions. [2023-08-30 23:46:34,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2526 transitions. [2023-08-30 23:46:34,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:34,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2526 transitions. [2023-08-30 23:46:34,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.75) internal successors, (2526), 8 states have internal predecessors, (2526), 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) [2023-08-30 23:46:34,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 703.0) internal successors, (6327), 9 states have internal predecessors, (6327), 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) [2023-08-30 23:46:34,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 703.0) internal successors, (6327), 9 states have internal predecessors, (6327), 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) [2023-08-30 23:46:34,394 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 99 flow. Second operand 8 states and 2526 transitions. [2023-08-30 23:46:34,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 220 flow [2023-08-30 23:46:34,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 23:46:34,396 INFO L231 Difference]: Finished difference. Result has 32 places, 18 transitions, 124 flow [2023-08-30 23:46:34,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2023-08-30 23:46:34,396 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2023-08-30 23:46:34,396 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 18 transitions, 124 flow [2023-08-30 23:46:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.42857142857144) internal successors, (2194), 7 states have internal predecessors, (2194), 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) [2023-08-30 23:46:34,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:34,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:46:34,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:34,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1519557245, now seen corresponding path program 2 times [2023-08-30 23:46:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:34,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682404194] [2023-08-30 23:46:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:34,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682404194] [2023-08-30 23:46:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682404194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:35,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:46:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533051451] [2023-08-30 23:46:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:35,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:46:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:46:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:46:35,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 703 [2023-08-30 23:46:35,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 18 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 313.42857142857144) internal successors, (2194), 7 states have internal predecessors, (2194), 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) [2023-08-30 23:46:35,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:35,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 703 [2023-08-30 23:46:35,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:35,981 INFO L130 PetriNetUnfolder]: 27/65 cut-off events. [2023-08-30 23:46:35,981 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-08-30 23:46:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 65 events. 27/65 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 1 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 230. Up to 23 conditions per place. [2023-08-30 23:46:35,981 INFO L137 encePairwiseOnDemand]: 697/703 looper letters, 8 selfloop transitions, 5 changer transitions 15/28 dead transitions. [2023-08-30 23:46:35,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 213 flow [2023-08-30 23:46:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:46:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:46:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2211 transitions. [2023-08-30 23:46:35,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492989229831335 [2023-08-30 23:46:35,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2211 transitions. [2023-08-30 23:46:35,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2211 transitions. [2023-08-30 23:46:35,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:35,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2211 transitions. [2023-08-30 23:46:35,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.85714285714283) internal successors, (2211), 7 states have internal predecessors, (2211), 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) [2023-08-30 23:46:35,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 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) [2023-08-30 23:46:35,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 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) [2023-08-30 23:46:35,995 INFO L175 Difference]: Start difference. First operand has 32 places, 18 transitions, 124 flow. Second operand 7 states and 2211 transitions. [2023-08-30 23:46:35,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 213 flow [2023-08-30 23:46:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 23:46:35,997 INFO L231 Difference]: Finished difference. Result has 34 places, 12 transitions, 75 flow [2023-08-30 23:46:35,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=12} [2023-08-30 23:46:35,997 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 12 predicate places. [2023-08-30 23:46:35,997 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 12 transitions, 75 flow [2023-08-30 23:46:35,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.42857142857144) internal successors, (2194), 7 states have internal predecessors, (2194), 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) [2023-08-30 23:46:35,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:46:35,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:46:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 23:46:35,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 23:46:35,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:46:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1188350985, now seen corresponding path program 3 times [2023-08-30 23:46:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:46:35,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376647665] [2023-08-30 23:46:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:46:35,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:46:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:46:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:46:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:46:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376647665] [2023-08-30 23:46:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376647665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:46:37,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:46:37,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 23:46:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337039149] [2023-08-30 23:46:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:46:37,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:46:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:46:37,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:46:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:46:37,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 703 [2023-08-30 23:46:37,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 12 transitions, 75 flow. Second operand has 8 states, 8 states have (on average 309.25) internal successors, (2474), 8 states have internal predecessors, (2474), 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) [2023-08-30 23:46:37,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:46:37,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 703 [2023-08-30 23:46:37,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:46:37,981 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 23:46:37,981 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 23:46:37,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 15 events. 3/15 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 2/17 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2023-08-30 23:46:37,981 INFO L137 encePairwiseOnDemand]: 698/703 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-30 23:46:37,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 12 transitions, 91 flow [2023-08-30 23:46:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:46:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:46:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1861 transitions. [2023-08-30 23:46:37,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44120436225699383 [2023-08-30 23:46:37,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1861 transitions. [2023-08-30 23:46:37,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1861 transitions. [2023-08-30 23:46:37,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:46:37,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1861 transitions. [2023-08-30 23:46:37,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.1666666666667) internal successors, (1861), 6 states have internal predecessors, (1861), 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) [2023-08-30 23:46:37,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 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) [2023-08-30 23:46:37,993 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 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) [2023-08-30 23:46:37,993 INFO L175 Difference]: Start difference. First operand has 34 places, 12 transitions, 75 flow. Second operand 6 states and 1861 transitions. [2023-08-30 23:46:37,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 12 transitions, 91 flow [2023-08-30 23:46:37,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 12 transitions, 53 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-08-30 23:46:37,993 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-30 23:46:37,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-30 23:46:37,994 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-08-30 23:46:37,994 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-30 23:46:37,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.25) internal successors, (2474), 8 states have internal predecessors, (2474), 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) [2023-08-30 23:46:37,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 23:46:37,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 23:46:37,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 23:46:37,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-30 23:46:37,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 23:46:37,998 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-08-30 23:46:38,000 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:46:38,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:46:38,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:46:38 BasicIcfg [2023-08-30 23:46:38,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:46:38,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:46:38,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:46:38,003 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:46:38,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:04" (3/4) ... [2023-08-30 23:46:38,005 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:46:38,008 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_read_nvram [2023-08-30 23:46:38,008 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_nvram_unlocked_ioctl [2023-08-30 23:46:38,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-30 23:46:38,011 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-30 23:46:38,012 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-08-30 23:46:38,012 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:46:38,012 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:46:38,036 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:46:38,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:46:38,037 INFO L158 Benchmark]: Toolchain (without parser) took 577534.27ms. Allocated memory was 77.6MB in the beginning and 352.3MB in the end (delta: 274.7MB). Free memory was 44.4MB in the beginning and 265.1MB in the end (delta: -220.7MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,037 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 77.6MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:46:38,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3594.66ms. Allocated memory was 77.6MB in the beginning and 134.2MB in the end (delta: 56.6MB). Free memory was 44.2MB in the beginning and 64.8MB in the end (delta: -20.6MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.24ms. Allocated memory is still 134.2MB. Free memory was 64.8MB in the beginning and 55.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,037 INFO L158 Benchmark]: Boogie Preprocessor took 63.37ms. Allocated memory is still 134.2MB. Free memory was 55.6MB in the beginning and 51.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,038 INFO L158 Benchmark]: RCFGBuilder took 662.02ms. Allocated memory is still 134.2MB. Free memory was 51.4MB in the beginning and 43.5MB in the end (delta: 7.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,038 INFO L158 Benchmark]: TraceAbstraction took 573057.23ms. Allocated memory was 134.2MB in the beginning and 352.3MB in the end (delta: 218.1MB). Free memory was 42.7MB in the beginning and 269.3MB in the end (delta: -226.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:46:38,038 INFO L158 Benchmark]: Witness Printer took 33.62ms. Allocated memory is still 352.3MB. Free memory was 269.3MB in the beginning and 265.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 23:46:38,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 77.6MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3594.66ms. Allocated memory was 77.6MB in the beginning and 134.2MB in the end (delta: 56.6MB). Free memory was 44.2MB in the beginning and 64.8MB in the end (delta: -20.6MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.24ms. Allocated memory is still 134.2MB. Free memory was 64.8MB in the beginning and 55.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.37ms. Allocated memory is still 134.2MB. Free memory was 55.6MB in the beginning and 51.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 662.02ms. Allocated memory is still 134.2MB. Free memory was 51.4MB in the beginning and 43.5MB in the end (delta: 7.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 573057.23ms. Allocated memory was 134.2MB in the beginning and 352.3MB in the end (delta: 218.1MB). Free memory was 42.7MB in the beginning and 269.3MB in the end (delta: -226.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.62ms. Allocated memory is still 352.3MB. Free memory was 269.3MB in the beginning and 265.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 560.3s, 325 PlacesBefore, 22 PlacesAfterwards, 329 TransitionsBefore, 19 TransitionsAfterwards, 9786 CoEnabledTransitionPairs, 10 FixpointIterations, 185 TrivialSequentialCompositions, 132 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 364 TotalNumberOfCompositions, 9091 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7587, independent: 7476, independent conditional: 0, independent unconditional: 7476, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5323, independent: 5290, independent conditional: 0, independent unconditional: 5290, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7587, independent: 2186, independent conditional: 0, independent unconditional: 2186, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 5323, unknown conditional: 0, unknown unconditional: 5323] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: 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, 458 locations, 4 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: 572.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 560.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1621 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1117 mSDsluCounter, 791 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 649 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2572 IncrementalHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 142 mSDtfsCounter, 2572 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2023-08-30 23:46:38,067 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE