./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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_write_nvram.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 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:13:39,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:13:39,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:13:39,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:13:39,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:13:39,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:13:39,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:13:39,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:13:39,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:13:39,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:13:39,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:13:39,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:13:39,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:13:39,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:13:39,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:13:39,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:13:39,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:13:39,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:13:39,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:13:39,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:13:39,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:13:39,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:13:39,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:13:39,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:13:39,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:13:39,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:13:39,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:13:39,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:13:39,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:13:39,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:13:39,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:13:39,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:13:39,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:13:39,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:13:39,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:13:39,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:13:39,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:13:39,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:13:39,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:13:39,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:13:39,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:13:39,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:13:39,546 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:13:39,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:13:39,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:13:39,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:13:39,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:13:39,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:13:39,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:13:39,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:13:39,549 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:13:39,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:13:39,549 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:13:39,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:13:39,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:13:39,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:13:39,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:13:39,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:13:39,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:13:39,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:13:39,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:13:39,551 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:13:39,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:13:39,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:13:39,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:13:39,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:13:39,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:13:39,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:13:39,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:13:39,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:13:39,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:13:39,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:13:39,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:13:39,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:13:39,553 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:13:39,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:13:39,554 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:13:39,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a382c3d3f68b2f5ab68f4f645755e252baf0f41b5f6fcd4ac49047e77a0e936 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:13:39,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:13:39,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:13:39,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:13:39,896 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:13:39,896 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:13:39,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2023-08-30 17:13:41,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:13:41,530 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:13:41,531 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_write_nvram.i [2023-08-30 17:13:41,571 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98468b1/eee991a19a524bbeb1a3804ba86adff1/FLAG6519cc3a0 [2023-08-30 17:13:41,592 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98468b1/eee991a19a524bbeb1a3804ba86adff1 [2023-08-30 17:13:41,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:13:41,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:13:41,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:13:41,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:13:41,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:13:41,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:13:41" (1/1) ... [2023-08-30 17:13:41,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61760d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:41, skipping insertion in model container [2023-08-30 17:13:41,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:13:41" (1/1) ... [2023-08-30 17:13:41,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:13:41,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:13:42,041 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_write_nvram.i[5469,5482] [2023-08-30 17:13:44,296 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:13:44,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:13:44,789 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:13:44,811 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_write_nvram.i[5469,5482] [2023-08-30 17:13:45,010 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:13:45,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:13:45,586 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,587 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:13:45,593 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:13:45,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45 WrapperNode [2023-08-30 17:13:45,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:13:45,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:13:45,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:13:45,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:13:45,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,742 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 18, statements flattened = 358 [2023-08-30 17:13:45,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:13:45,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:13:45,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:13:45,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:13:45,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:13:45,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:13:45,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:13:45,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:13:45,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (1/1) ... [2023-08-30 17:13:45,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:13:45,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:13:45,866 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 17:13:45,871 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 17:13:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:13:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:13:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:13:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:13:45,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2023-08-30 17:13:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_write_nvram [2023-08-30 17:13:45,891 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_write_nvram [2023-08-30 17:13:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:13:45,892 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 17:13:46,318 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:13:46,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:13:46,814 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:13:46,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:13:46,823 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 17:13:46,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:13:46 BoogieIcfgContainer [2023-08-30 17:13:46,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:13:46,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:13:46,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:13:46,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:13:46,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:13:41" (1/3) ... [2023-08-30 17:13:46,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bc3d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:13:46, skipping insertion in model container [2023-08-30 17:13:46,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:13:45" (2/3) ... [2023-08-30 17:13:46,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bc3d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:13:46, skipping insertion in model container [2023-08-30 17:13:46,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:13:46" (3/3) ... [2023-08-30 17:13:46,832 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_write_nvram.i [2023-08-30 17:13:46,838 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:13:46,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:13:46,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 17:13:46,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:13:46,953 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:13:46,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 379 places, 387 transitions, 790 flow [2023-08-30 17:13:47,090 INFO L130 PetriNetUnfolder]: 15/385 cut-off events. [2023-08-30 17:13:47,091 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:13:47,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 385 events. 15/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 281. Up to 4 conditions per place. [2023-08-30 17:13:47,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 379 places, 387 transitions, 790 flow [2023-08-30 17:13:47,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 377 transitions, 763 flow [2023-08-30 17:13:47,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:13:47,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 377 transitions, 763 flow [2023-08-30 17:13:47,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 377 transitions, 763 flow [2023-08-30 17:13:47,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 377 transitions, 763 flow [2023-08-30 17:13:47,193 INFO L130 PetriNetUnfolder]: 15/377 cut-off events. [2023-08-30 17:13:47,193 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:13:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 377 events. 15/377 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 454 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 281. Up to 4 conditions per place. [2023-08-30 17:13:47,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 19092 [2023-08-30 17:14:45,816 WARN L222 SmtUtils]: Spent 14.93s on a formula simplification that was a NOOP. DAG size: 504 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:14:53,756 WARN L222 SmtUtils]: Spent 7.92s on a formula simplification that was a NOOP. DAG size: 430 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:15:12,922 WARN L222 SmtUtils]: Spent 19.16s on a formula simplification that was a NOOP. DAG size: 504 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:15:26,795 WARN L222 SmtUtils]: Spent 13.86s on a formula simplification that was a NOOP. DAG size: 430 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:16:59,129 WARN L222 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 518 DAG size of output: 514 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:17:43,594 WARN L222 SmtUtils]: Spent 44.46s on a formula simplification that was a NOOP. DAG size: 502 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:11,242 WARN L222 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 528 DAG size of output: 524 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:51,828 WARN L222 SmtUtils]: Spent 40.58s on a formula simplification that was a NOOP. DAG size: 512 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:51,841 INFO L134 LiptonReduction]: Checked pairs total: 17926 [2023-08-30 17:19:51,841 INFO L136 LiptonReduction]: Total number of compositions: 426 [2023-08-30 17:19:51,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:19:51,857 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;@55d90a66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:19:51,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 17:19:51,866 INFO L130 PetriNetUnfolder]: 5/17 cut-off events. [2023-08-30 17:19:51,866 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:19:51,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:19:51,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:19:51,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:19:51,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:19:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 613609338, now seen corresponding path program 1 times [2023-08-30 17:19:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:19:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46277265] [2023-08-30 17:19:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:19:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:19:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:19:52,795 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 17:19:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:19:52,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46277265] [2023-08-30 17:19:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46277265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:19:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:19:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:19:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171974739] [2023-08-30 17:19:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:19:52,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:19:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:19:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:19:52,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:19:52,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 813 [2023-08-30 17:19:52,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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 17:19:52,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:19:52,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 813 [2023-08-30 17:19:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:19:53,371 INFO L130 PetriNetUnfolder]: 237/372 cut-off events. [2023-08-30 17:19:53,371 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 17:19:53,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 372 events. 237/372 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1143 event pairs, 89 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 644. Up to 264 conditions per place. [2023-08-30 17:19:53,375 INFO L137 encePairwiseOnDemand]: 808/813 looper letters, 30 selfloop transitions, 4 changer transitions 3/37 dead transitions. [2023-08-30 17:19:53,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 37 transitions, 163 flow [2023-08-30 17:19:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:19:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:19:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2023-08-30 17:19:53,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46084460844608444 [2023-08-30 17:19:53,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2023-08-30 17:19:53,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2023-08-30 17:19:53,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:19:53,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2023-08-30 17:19:53,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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 17:19:53,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 813.0) internal successors, (3252), 4 states have internal predecessors, (3252), 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 17:19:53,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 813.0) internal successors, (3252), 4 states have internal predecessors, (3252), 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 17:19:53,426 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 55 flow. Second operand 3 states and 1124 transitions. [2023-08-30 17:19:53,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 37 transitions, 163 flow [2023-08-30 17:19:53,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 37 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:19:53,448 INFO L231 Difference]: Finished difference. Result has 25 places, 26 transitions, 80 flow [2023-08-30 17:19:53,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=25, PETRI_TRANSITIONS=26} [2023-08-30 17:19:53,457 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-30 17:19:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 26 transitions, 80 flow [2023-08-30 17:19:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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 17:19:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:19:53,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:19:53,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:19:53,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:19:53,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:19:53,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1842022213, now seen corresponding path program 1 times [2023-08-30 17:19:53,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:19:53,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143201215] [2023-08-30 17:19:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:19:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:19:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:19:54,263 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 17:19:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:19:54,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143201215] [2023-08-30 17:19:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143201215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:19:54,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:19:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 17:19:54,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593832368] [2023-08-30 17:19:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:19:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:19:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:19:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:19:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 17:19:54,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 813 [2023-08-30 17:19:54,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 26 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 358.1666666666667) internal successors, (2149), 6 states have internal predecessors, (2149), 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 17:19:54,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:19:54,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 813 [2023-08-30 17:19:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:19:54,973 INFO L130 PetriNetUnfolder]: 242/389 cut-off events. [2023-08-30 17:19:54,974 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2023-08-30 17:19:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 389 events. 242/389 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1341 event pairs, 21 based on Foata normal form. 9/306 useless extension candidates. Maximal degree in co-relation 672. Up to 202 conditions per place. [2023-08-30 17:19:54,976 INFO L137 encePairwiseOnDemand]: 806/813 looper letters, 35 selfloop transitions, 7 changer transitions 8/50 dead transitions. [2023-08-30 17:19:54,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 50 transitions, 243 flow [2023-08-30 17:19:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 17:19:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 17:19:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1834 transitions. [2023-08-30 17:19:54,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45116851168511685 [2023-08-30 17:19:54,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1834 transitions. [2023-08-30 17:19:54,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1834 transitions. [2023-08-30 17:19:54,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:19:54,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1834 transitions. [2023-08-30 17:19:54,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 366.8) internal successors, (1834), 5 states have internal predecessors, (1834), 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 17:19:54,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 813.0) internal successors, (4878), 6 states have internal predecessors, (4878), 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 17:19:54,994 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 813.0) internal successors, (4878), 6 states have internal predecessors, (4878), 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 17:19:54,994 INFO L175 Difference]: Start difference. First operand has 25 places, 26 transitions, 80 flow. Second operand 5 states and 1834 transitions. [2023-08-30 17:19:54,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 50 transitions, 243 flow [2023-08-30 17:19:54,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 50 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:19:54,996 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2023-08-30 17:19:54,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-08-30 17:19:54,997 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-08-30 17:19:54,997 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2023-08-30 17:19:54,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 358.1666666666667) internal successors, (2149), 6 states have internal predecessors, (2149), 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 17:19:54,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:19:54,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:19:54,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:19:55,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:19:55,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:19:55,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1596026477, now seen corresponding path program 1 times [2023-08-30 17:19:55,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:19:55,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644647878] [2023-08-30 17:19:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:19:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:19:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:19:55,350 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 17:19:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:19:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644647878] [2023-08-30 17:19:55,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644647878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:19:55,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:19:55,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:19:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323970929] [2023-08-30 17:19:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:19:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:19:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:19:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:19:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:19:55,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 813 [2023-08-30 17:19:55,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 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 17:19:55,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:19:55,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 813 [2023-08-30 17:19:55,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:19:55,768 INFO L130 PetriNetUnfolder]: 177/314 cut-off events. [2023-08-30 17:19:55,769 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 17:19:55,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 314 events. 177/314 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1030 event pairs, 77 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 432. Up to 216 conditions per place. [2023-08-30 17:19:55,770 INFO L137 encePairwiseOnDemand]: 809/813 looper letters, 23 selfloop transitions, 4 changer transitions 10/37 dead transitions. [2023-08-30 17:19:55,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 217 flow [2023-08-30 17:19:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:19:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:19:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1119 transitions. [2023-08-30 17:19:55,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879458794587946 [2023-08-30 17:19:55,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1119 transitions. [2023-08-30 17:19:55,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1119 transitions. [2023-08-30 17:19:55,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:19:55,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1119 transitions. [2023-08-30 17:19:55,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 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 17:19:55,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 813.0) internal successors, (3252), 4 states have internal predecessors, (3252), 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 17:19:55,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 813.0) internal successors, (3252), 4 states have internal predecessors, (3252), 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 17:19:55,783 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 3 states and 1119 transitions. [2023-08-30 17:19:55,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 217 flow [2023-08-30 17:19:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:19:55,787 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 112 flow [2023-08-30 17:19:55,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-30 17:19:55,789 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-30 17:19:55,789 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 112 flow [2023-08-30 17:19:55,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 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 17:19:55,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:19:55,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:19:55,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:19:55,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:19:55,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:19:55,791 INFO L85 PathProgramCache]: Analyzing trace with hash -629217462, now seen corresponding path program 1 times [2023-08-30 17:19:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:19:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234867631] [2023-08-30 17:19:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:19:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:19:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:19:58,126 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 17:19:58,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:19:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234867631] [2023-08-30 17:19:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234867631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:19:58,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:19:58,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:19:58,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631044960] [2023-08-30 17:19:58,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:19:58,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:19:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:19:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:19:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:19:58,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 813 [2023-08-30 17:19:58,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:19:58,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:19:58,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 813 [2023-08-30 17:19:58,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:19:59,375 INFO L130 PetriNetUnfolder]: 196/389 cut-off events. [2023-08-30 17:19:59,375 INFO L131 PetriNetUnfolder]: For 517/517 co-relation queries the response was YES. [2023-08-30 17:19:59,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 389 events. 196/389 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1707 event pairs, 16 based on Foata normal form. 4/393 useless extension candidates. Maximal degree in co-relation 962. Up to 104 conditions per place. [2023-08-30 17:19:59,377 INFO L137 encePairwiseOnDemand]: 805/813 looper letters, 43 selfloop transitions, 12 changer transitions 10/65 dead transitions. [2023-08-30 17:19:59,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 65 transitions, 406 flow [2023-08-30 17:19:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:19:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:19:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2548 transitions. [2023-08-30 17:19:59,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772447724477243 [2023-08-30 17:19:59,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2548 transitions. [2023-08-30 17:19:59,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2548 transitions. [2023-08-30 17:19:59,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:19:59,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2548 transitions. [2023-08-30 17:19:59,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 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 17:19:59,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:19:59,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:19:59,400 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 112 flow. Second operand 7 states and 2548 transitions. [2023-08-30 17:19:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 65 transitions, 406 flow [2023-08-30 17:19:59,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 65 transitions, 370 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:19:59,405 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 166 flow [2023-08-30 17:19:59,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 17:19:59,407 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-08-30 17:19:59,407 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 166 flow [2023-08-30 17:19:59,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:19:59,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:19:59,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:19:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:19:59,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:19:59,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:19:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1713199274, now seen corresponding path program 2 times [2023-08-30 17:19:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:19:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302934390] [2023-08-30 17:19:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:19:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:19:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:05,296 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 17:20:05,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302934390] [2023-08-30 17:20:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302934390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690256635] [2023-08-30 17:20:05,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:20:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:20:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:20:06,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 813 [2023-08-30 17:20:06,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 346.375) internal successors, (2771), 8 states have internal predecessors, (2771), 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 17:20:06,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:06,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 813 [2023-08-30 17:20:06,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:06,857 INFO L130 PetriNetUnfolder]: 273/520 cut-off events. [2023-08-30 17:20:06,857 INFO L131 PetriNetUnfolder]: For 653/653 co-relation queries the response was YES. [2023-08-30 17:20:06,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 520 events. 273/520 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2349 event pairs, 67 based on Foata normal form. 10/530 useless extension candidates. Maximal degree in co-relation 1140. Up to 220 conditions per place. [2023-08-30 17:20:06,859 INFO L137 encePairwiseOnDemand]: 801/813 looper letters, 34 selfloop transitions, 31 changer transitions 18/83 dead transitions. [2023-08-30 17:20:06,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 560 flow [2023-08-30 17:20:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:20:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:20:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3869 transitions. [2023-08-30 17:20:06,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43262887174326287 [2023-08-30 17:20:06,869 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3869 transitions. [2023-08-30 17:20:06,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3869 transitions. [2023-08-30 17:20:06,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:06,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3869 transitions. [2023-08-30 17:20:06,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 351.72727272727275) internal successors, (3869), 11 states have internal predecessors, (3869), 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 17:20:06,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 813.0) internal successors, (9756), 12 states have internal predecessors, (9756), 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 17:20:06,890 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 813.0) internal successors, (9756), 12 states have internal predecessors, (9756), 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 17:20:06,890 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 166 flow. Second operand 11 states and 3869 transitions. [2023-08-30 17:20:06,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 560 flow [2023-08-30 17:20:06,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 556 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 17:20:06,895 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 410 flow [2023-08-30 17:20:06,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-30 17:20:06,898 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 28 predicate places. [2023-08-30 17:20:06,898 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 410 flow [2023-08-30 17:20:06,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 346.375) internal successors, (2771), 8 states have internal predecessors, (2771), 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 17:20:06,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:06,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:06,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:20:06,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:06,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1932884782, now seen corresponding path program 1 times [2023-08-30 17:20:06,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014383402] [2023-08-30 17:20:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:08,964 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 17:20:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014383402] [2023-08-30 17:20:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014383402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:08,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:08,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802107486] [2023-08-30 17:20:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:20:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:20:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:20:09,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 813 [2023-08-30 17:20:09,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 348.375) internal successors, (2787), 8 states have internal predecessors, (2787), 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 17:20:09,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:09,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 813 [2023-08-30 17:20:09,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:10,238 INFO L130 PetriNetUnfolder]: 273/516 cut-off events. [2023-08-30 17:20:10,238 INFO L131 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2023-08-30 17:20:10,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 516 events. 273/516 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2313 event pairs, 32 based on Foata normal form. 6/522 useless extension candidates. Maximal degree in co-relation 1899. Up to 299 conditions per place. [2023-08-30 17:20:10,241 INFO L137 encePairwiseOnDemand]: 805/813 looper letters, 47 selfloop transitions, 17 changer transitions 11/75 dead transitions. [2023-08-30 17:20:10,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 665 flow [2023-08-30 17:20:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:20:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:20:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2474 transitions. [2023-08-30 17:20:10,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4347214900720436 [2023-08-30 17:20:10,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2474 transitions. [2023-08-30 17:20:10,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2474 transitions. [2023-08-30 17:20:10,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:10,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2474 transitions. [2023-08-30 17:20:10,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.42857142857144) internal successors, (2474), 7 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 17:20:10,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:10,261 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 410 flow. Second operand 7 states and 2474 transitions. [2023-08-30 17:20:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 665 flow [2023-08-30 17:20:10,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 624 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-30 17:20:10,268 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 443 flow [2023-08-30 17:20:10,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 17:20:10,272 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2023-08-30 17:20:10,272 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 443 flow [2023-08-30 17:20:10,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 348.375) internal successors, (2787), 8 states have internal predecessors, (2787), 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 17:20:10,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:10,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:20:10,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:10,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash -624922700, now seen corresponding path program 2 times [2023-08-30 17:20:10,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:10,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890956519] [2023-08-30 17:20:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:10,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:12,835 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 17:20:12,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:12,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890956519] [2023-08-30 17:20:12,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890956519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:12,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075673375] [2023-08-30 17:20:12,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:12,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:12,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:12,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:13,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 813 [2023-08-30 17:20:13,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 351.57142857142856) internal successors, (2461), 7 states have internal predecessors, (2461), 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 17:20:13,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:13,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 813 [2023-08-30 17:20:13,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:14,231 INFO L130 PetriNetUnfolder]: 367/661 cut-off events. [2023-08-30 17:20:14,231 INFO L131 PetriNetUnfolder]: For 2497/2497 co-relation queries the response was YES. [2023-08-30 17:20:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 661 events. 367/661 cut-off events. For 2497/2497 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3033 event pairs, 94 based on Foata normal form. 10/671 useless extension candidates. Maximal degree in co-relation 2651. Up to 356 conditions per place. [2023-08-30 17:20:14,236 INFO L137 encePairwiseOnDemand]: 802/813 looper letters, 55 selfloop transitions, 42 changer transitions 10/107 dead transitions. [2023-08-30 17:20:14,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 1019 flow [2023-08-30 17:20:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:20:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:20:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3569 transitions. [2023-08-30 17:20:14,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43899138991389913 [2023-08-30 17:20:14,244 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3569 transitions. [2023-08-30 17:20:14,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3569 transitions. [2023-08-30 17:20:14,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:14,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3569 transitions. [2023-08-30 17:20:14,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 356.9) internal successors, (3569), 10 states have internal predecessors, (3569), 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 17:20:14,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:14,262 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:14,263 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 443 flow. Second operand 10 states and 3569 transitions. [2023-08-30 17:20:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 1019 flow [2023-08-30 17:20:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 980 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 17:20:14,272 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 797 flow [2023-08-30 17:20:14,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=797, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-30 17:20:14,273 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-30 17:20:14,273 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 797 flow [2023-08-30 17:20:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 351.57142857142856) internal successors, (2461), 7 states have internal predecessors, (2461), 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 17:20:14,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:14,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:20:14,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:14,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash 808012148, now seen corresponding path program 3 times [2023-08-30 17:20:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730524881] [2023-08-30 17:20:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:16,561 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 17:20:16,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730524881] [2023-08-30 17:20:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730524881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:16,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414396447] [2023-08-30 17:20:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:16,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:16,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 813 [2023-08-30 17:20:16,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 797 flow. Second operand has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:16,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:16,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 813 [2023-08-30 17:20:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:17,679 INFO L130 PetriNetUnfolder]: 384/690 cut-off events. [2023-08-30 17:20:17,680 INFO L131 PetriNetUnfolder]: For 2839/2839 co-relation queries the response was YES. [2023-08-30 17:20:17,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 690 events. 384/690 cut-off events. For 2839/2839 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3144 event pairs, 40 based on Foata normal form. 10/700 useless extension candidates. Maximal degree in co-relation 3159. Up to 376 conditions per place. [2023-08-30 17:20:17,685 INFO L137 encePairwiseOnDemand]: 803/813 looper letters, 71 selfloop transitions, 36 changer transitions 12/119 dead transitions. [2023-08-30 17:20:17,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 1329 flow [2023-08-30 17:20:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 17:20:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 17:20:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3230 transitions. [2023-08-30 17:20:17,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44143774771081046 [2023-08-30 17:20:17,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3230 transitions. [2023-08-30 17:20:17,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3230 transitions. [2023-08-30 17:20:17,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:17,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3230 transitions. [2023-08-30 17:20:17,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 358.8888888888889) internal successors, (3230), 9 states have internal predecessors, (3230), 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 17:20:17,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 813.0) internal successors, (8130), 10 states have internal predecessors, (8130), 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 17:20:17,709 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 813.0) internal successors, (8130), 10 states have internal predecessors, (8130), 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 17:20:17,709 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 797 flow. Second operand 9 states and 3230 transitions. [2023-08-30 17:20:17,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 1329 flow [2023-08-30 17:20:17,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 1177 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-08-30 17:20:17,724 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 940 flow [2023-08-30 17:20:17,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=940, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2023-08-30 17:20:17,725 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2023-08-30 17:20:17,725 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 940 flow [2023-08-30 17:20:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:17,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:17,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:17,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 17:20:17,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:17,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1869477730, now seen corresponding path program 4 times [2023-08-30 17:20:17,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:17,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314447450] [2023-08-30 17:20:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:19,923 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 17:20:19,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:19,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314447450] [2023-08-30 17:20:19,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314447450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:19,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:19,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659193794] [2023-08-30 17:20:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:20,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 813 [2023-08-30 17:20:20,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 940 flow. Second operand has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:20,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:20,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 813 [2023-08-30 17:20:20,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:21,030 INFO L130 PetriNetUnfolder]: 411/735 cut-off events. [2023-08-30 17:20:21,030 INFO L131 PetriNetUnfolder]: For 3419/3419 co-relation queries the response was YES. [2023-08-30 17:20:21,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 735 events. 411/735 cut-off events. For 3419/3419 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3436 event pairs, 41 based on Foata normal form. 10/745 useless extension candidates. Maximal degree in co-relation 3426. Up to 372 conditions per place. [2023-08-30 17:20:21,036 INFO L137 encePairwiseOnDemand]: 802/813 looper letters, 76 selfloop transitions, 52 changer transitions 19/147 dead transitions. [2023-08-30 17:20:21,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 147 transitions, 1612 flow [2023-08-30 17:20:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:20:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:20:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3592 transitions. [2023-08-30 17:20:21,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44182041820418205 [2023-08-30 17:20:21,045 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3592 transitions. [2023-08-30 17:20:21,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3592 transitions. [2023-08-30 17:20:21,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:21,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3592 transitions. [2023-08-30 17:20:21,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 359.2) internal successors, (3592), 10 states have internal predecessors, (3592), 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 17:20:21,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:21,061 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:21,061 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 940 flow. Second operand 10 states and 3592 transitions. [2023-08-30 17:20:21,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 147 transitions, 1612 flow [2023-08-30 17:20:21,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 147 transitions, 1590 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 17:20:21,077 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 1275 flow [2023-08-30 17:20:21,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2023-08-30 17:20:21,078 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-08-30 17:20:21,078 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 1275 flow [2023-08-30 17:20:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:21,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:21,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:21,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 17:20:21,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:21,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1770099818, now seen corresponding path program 5 times [2023-08-30 17:20:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577828281] [2023-08-30 17:20:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:23,272 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 17:20:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:23,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577828281] [2023-08-30 17:20:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577828281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:23,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407520244] [2023-08-30 17:20:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:23,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 813 [2023-08-30 17:20:23,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 1275 flow. Second operand has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:23,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:23,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 813 [2023-08-30 17:20:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:24,434 INFO L130 PetriNetUnfolder]: 428/762 cut-off events. [2023-08-30 17:20:24,434 INFO L131 PetriNetUnfolder]: For 4676/4676 co-relation queries the response was YES. [2023-08-30 17:20:24,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 762 events. 428/762 cut-off events. For 4676/4676 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3541 event pairs, 50 based on Foata normal form. 10/772 useless extension candidates. Maximal degree in co-relation 4041. Up to 436 conditions per place. [2023-08-30 17:20:24,442 INFO L137 encePairwiseOnDemand]: 803/813 looper letters, 85 selfloop transitions, 51 changer transitions 12/148 dead transitions. [2023-08-30 17:20:24,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 148 transitions, 1874 flow [2023-08-30 17:20:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 17:20:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 17:20:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3231 transitions. [2023-08-30 17:20:24,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44157441574415746 [2023-08-30 17:20:24,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3231 transitions. [2023-08-30 17:20:24,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3231 transitions. [2023-08-30 17:20:24,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:24,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3231 transitions. [2023-08-30 17:20:24,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 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 17:20:24,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 813.0) internal successors, (8130), 10 states have internal predecessors, (8130), 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 17:20:24,464 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 813.0) internal successors, (8130), 10 states have internal predecessors, (8130), 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 17:20:24,464 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 1275 flow. Second operand 9 states and 3231 transitions. [2023-08-30 17:20:24,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 148 transitions, 1874 flow [2023-08-30 17:20:24,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 148 transitions, 1824 flow, removed 25 selfloop flow, removed 0 redundant places. [2023-08-30 17:20:24,488 INFO L231 Difference]: Finished difference. Result has 102 places, 122 transitions, 1541 flow [2023-08-30 17:20:24,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1541, PETRI_PLACES=102, PETRI_TRANSITIONS=122} [2023-08-30 17:20:24,489 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2023-08-30 17:20:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 122 transitions, 1541 flow [2023-08-30 17:20:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 17:20:24,490 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:24,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1773501758, now seen corresponding path program 6 times [2023-08-30 17:20:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:24,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809303671] [2023-08-30 17:20:24,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:25,715 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 17:20:25,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:25,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809303671] [2023-08-30 17:20:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809303671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:25,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:25,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393004114] [2023-08-30 17:20:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:25,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:26,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 813 [2023-08-30 17:20:26,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 122 transitions, 1541 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:26,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:26,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 813 [2023-08-30 17:20:26,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:26,675 INFO L130 PetriNetUnfolder]: 424/750 cut-off events. [2023-08-30 17:20:26,675 INFO L131 PetriNetUnfolder]: For 5593/5593 co-relation queries the response was YES. [2023-08-30 17:20:26,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 750 events. 424/750 cut-off events. For 5593/5593 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3445 event pairs, 29 based on Foata normal form. 6/756 useless extension candidates. Maximal degree in co-relation 4234. Up to 286 conditions per place. [2023-08-30 17:20:26,681 INFO L137 encePairwiseOnDemand]: 806/813 looper letters, 115 selfloop transitions, 36 changer transitions 10/161 dead transitions. [2023-08-30 17:20:26,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 161 transitions, 2160 flow [2023-08-30 17:20:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 17:20:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 17:20:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2902 transitions. [2023-08-30 17:20:26,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461869618696187 [2023-08-30 17:20:26,687 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2902 transitions. [2023-08-30 17:20:26,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2902 transitions. [2023-08-30 17:20:26,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:26,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2902 transitions. [2023-08-30 17:20:26,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 362.75) internal successors, (2902), 8 states have internal predecessors, (2902), 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 17:20:26,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 813.0) internal successors, (7317), 9 states have internal predecessors, (7317), 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 17:20:26,699 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 813.0) internal successors, (7317), 9 states have internal predecessors, (7317), 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 17:20:26,699 INFO L175 Difference]: Start difference. First operand has 102 places, 122 transitions, 1541 flow. Second operand 8 states and 2902 transitions. [2023-08-30 17:20:26,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 161 transitions, 2160 flow [2023-08-30 17:20:26,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 161 transitions, 2079 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-30 17:20:26,729 INFO L231 Difference]: Finished difference. Result has 108 places, 126 transitions, 1615 flow [2023-08-30 17:20:26,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1615, PETRI_PLACES=108, PETRI_TRANSITIONS=126} [2023-08-30 17:20:26,729 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 84 predicate places. [2023-08-30 17:20:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 126 transitions, 1615 flow [2023-08-30 17:20:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:26,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:26,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:26,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 17:20:26,731 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:26,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1717495852, now seen corresponding path program 7 times [2023-08-30 17:20:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070505439] [2023-08-30 17:20:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:27,738 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 17:20:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:27,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070505439] [2023-08-30 17:20:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070505439] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168161650] [2023-08-30 17:20:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:27,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:27,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:28,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 813 [2023-08-30 17:20:28,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 126 transitions, 1615 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:28,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:28,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 813 [2023-08-30 17:20:28,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:28,712 INFO L130 PetriNetUnfolder]: 428/758 cut-off events. [2023-08-30 17:20:28,712 INFO L131 PetriNetUnfolder]: For 6489/6489 co-relation queries the response was YES. [2023-08-30 17:20:28,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 758 events. 428/758 cut-off events. For 6489/6489 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3484 event pairs, 32 based on Foata normal form. 6/764 useless extension candidates. Maximal degree in co-relation 4315. Up to 297 conditions per place. [2023-08-30 17:20:28,717 INFO L137 encePairwiseOnDemand]: 806/813 looper letters, 114 selfloop transitions, 38 changer transitions 12/164 dead transitions. [2023-08-30 17:20:28,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 2245 flow [2023-08-30 17:20:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:20:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:20:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2546 transitions. [2023-08-30 17:20:28,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44737304515902304 [2023-08-30 17:20:28,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2546 transitions. [2023-08-30 17:20:28,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2546 transitions. [2023-08-30 17:20:28,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:28,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2546 transitions. [2023-08-30 17:20:28,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 363.7142857142857) internal successors, (2546), 7 states have internal predecessors, (2546), 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 17:20:28,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:28,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:28,733 INFO L175 Difference]: Start difference. First operand has 108 places, 126 transitions, 1615 flow. Second operand 7 states and 2546 transitions. [2023-08-30 17:20:28,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 2245 flow [2023-08-30 17:20:28,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 2213 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 17:20:28,765 INFO L231 Difference]: Finished difference. Result has 114 places, 128 transitions, 1713 flow [2023-08-30 17:20:28,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1713, PETRI_PLACES=114, PETRI_TRANSITIONS=128} [2023-08-30 17:20:28,766 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-08-30 17:20:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 128 transitions, 1713 flow [2023-08-30 17:20:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:28,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 17:20:28,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:28,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1973792680, now seen corresponding path program 8 times [2023-08-30 17:20:28,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:28,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549510347] [2023-08-30 17:20:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:28,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:30,771 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 17:20:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549510347] [2023-08-30 17:20:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549510347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:30,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236524003] [2023-08-30 17:20:30,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:30,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:31,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 813 [2023-08-30 17:20:31,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 128 transitions, 1713 flow. Second operand has 7 states, 7 states have (on average 354.57142857142856) internal successors, (2482), 7 states have internal predecessors, (2482), 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 17:20:31,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:31,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 813 [2023-08-30 17:20:31,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:31,935 INFO L130 PetriNetUnfolder]: 472/833 cut-off events. [2023-08-30 17:20:31,935 INFO L131 PetriNetUnfolder]: For 8758/8758 co-relation queries the response was YES. [2023-08-30 17:20:31,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 833 events. 472/833 cut-off events. For 8758/8758 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3897 event pairs, 59 based on Foata normal form. 10/843 useless extension candidates. Maximal degree in co-relation 4954. Up to 441 conditions per place. [2023-08-30 17:20:31,942 INFO L137 encePairwiseOnDemand]: 802/813 looper letters, 68 selfloop transitions, 91 changer transitions 10/169 dead transitions. [2023-08-30 17:20:31,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 169 transitions, 2444 flow [2023-08-30 17:20:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:20:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:20:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3597 transitions. [2023-08-30 17:20:31,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44243542435424354 [2023-08-30 17:20:31,948 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3597 transitions. [2023-08-30 17:20:31,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3597 transitions. [2023-08-30 17:20:31,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:31,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3597 transitions. [2023-08-30 17:20:31,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 359.7) internal successors, (3597), 10 states have internal predecessors, (3597), 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 17:20:31,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:31,961 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:31,962 INFO L175 Difference]: Start difference. First operand has 114 places, 128 transitions, 1713 flow. Second operand 10 states and 3597 transitions. [2023-08-30 17:20:31,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 169 transitions, 2444 flow [2023-08-30 17:20:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 169 transitions, 2382 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 17:20:32,003 INFO L231 Difference]: Finished difference. Result has 124 places, 142 transitions, 2164 flow [2023-08-30 17:20:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2164, PETRI_PLACES=124, PETRI_TRANSITIONS=142} [2023-08-30 17:20:32,004 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 100 predicate places. [2023-08-30 17:20:32,004 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 142 transitions, 2164 flow [2023-08-30 17:20:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 354.57142857142856) internal successors, (2482), 7 states have internal predecessors, (2482), 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 17:20:32,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:32,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:32,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 17:20:32,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:32,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash -390220190, now seen corresponding path program 3 times [2023-08-30 17:20:32,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:32,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842321167] [2023-08-30 17:20:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:35,140 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 17:20:35,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:35,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842321167] [2023-08-30 17:20:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842321167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:35,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:35,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 17:20:35,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039002688] [2023-08-30 17:20:35,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:35,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 17:20:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:35,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 17:20:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:20:35,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 813 [2023-08-30 17:20:35,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 142 transitions, 2164 flow. Second operand has 9 states, 9 states have (on average 346.22222222222223) internal successors, (3116), 9 states have internal predecessors, (3116), 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 17:20:35,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:35,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 813 [2023-08-30 17:20:35,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:36,702 INFO L130 PetriNetUnfolder]: 462/811 cut-off events. [2023-08-30 17:20:36,703 INFO L131 PetriNetUnfolder]: For 8996/8996 co-relation queries the response was YES. [2023-08-30 17:20:36,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 811 events. 462/811 cut-off events. For 8996/8996 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3757 event pairs, 59 based on Foata normal form. 4/815 useless extension candidates. Maximal degree in co-relation 5146. Up to 440 conditions per place. [2023-08-30 17:20:36,711 INFO L137 encePairwiseOnDemand]: 805/813 looper letters, 115 selfloop transitions, 40 changer transitions 10/165 dead transitions. [2023-08-30 17:20:36,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 2625 flow [2023-08-30 17:20:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:20:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:20:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2463 transitions. [2023-08-30 17:20:36,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327886136004217 [2023-08-30 17:20:36,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2463 transitions. [2023-08-30 17:20:36,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2463 transitions. [2023-08-30 17:20:36,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:36,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2463 transitions. [2023-08-30 17:20:36,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.85714285714283) internal successors, (2463), 7 states have internal predecessors, (2463), 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 17:20:36,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:36,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:36,725 INFO L175 Difference]: Start difference. First operand has 124 places, 142 transitions, 2164 flow. Second operand 7 states and 2463 transitions. [2023-08-30 17:20:36,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 2625 flow [2023-08-30 17:20:36,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 165 transitions, 2493 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-08-30 17:20:36,766 INFO L231 Difference]: Finished difference. Result has 128 places, 144 transitions, 2186 flow [2023-08-30 17:20:36,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=2036, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2186, PETRI_PLACES=128, PETRI_TRANSITIONS=144} [2023-08-30 17:20:36,768 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 104 predicate places. [2023-08-30 17:20:36,768 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 144 transitions, 2186 flow [2023-08-30 17:20:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 346.22222222222223) internal successors, (3116), 9 states have internal predecessors, (3116), 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 17:20:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:36,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 17:20:36,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:36,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -633752502, now seen corresponding path program 9 times [2023-08-30 17:20:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056090299] [2023-08-30 17:20:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:38,542 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 17:20:38,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:38,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056090299] [2023-08-30 17:20:38,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056090299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:38,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:38,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 17:20:38,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102010157] [2023-08-30 17:20:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 17:20:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 17:20:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:20:39,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 813 [2023-08-30 17:20:39,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 144 transitions, 2186 flow. Second operand has 9 states, 9 states have (on average 348.22222222222223) internal successors, (3134), 9 states have internal predecessors, (3134), 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 17:20:39,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:39,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 813 [2023-08-30 17:20:39,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:39,877 INFO L130 PetriNetUnfolder]: 502/882 cut-off events. [2023-08-30 17:20:39,877 INFO L131 PetriNetUnfolder]: For 10787/10787 co-relation queries the response was YES. [2023-08-30 17:20:39,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 882 events. 502/882 cut-off events. For 10787/10787 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4170 event pairs, 102 based on Foata normal form. 10/892 useless extension candidates. Maximal degree in co-relation 5656. Up to 429 conditions per place. [2023-08-30 17:20:39,884 INFO L137 encePairwiseOnDemand]: 802/813 looper letters, 75 selfloop transitions, 102 changer transitions 10/187 dead transitions. [2023-08-30 17:20:39,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 187 transitions, 3062 flow [2023-08-30 17:20:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:20:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:20:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3885 transitions. [2023-08-30 17:20:39,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344179805434418 [2023-08-30 17:20:39,889 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3885 transitions. [2023-08-30 17:20:39,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3885 transitions. [2023-08-30 17:20:39,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:39,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3885 transitions. [2023-08-30 17:20:39,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 353.1818181818182) internal successors, (3885), 11 states have internal predecessors, (3885), 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 17:20:39,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 813.0) internal successors, (9756), 12 states have internal predecessors, (9756), 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 17:20:39,900 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 813.0) internal successors, (9756), 12 states have internal predecessors, (9756), 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 17:20:39,900 INFO L175 Difference]: Start difference. First operand has 128 places, 144 transitions, 2186 flow. Second operand 11 states and 3885 transitions. [2023-08-30 17:20:39,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 187 transitions, 3062 flow [2023-08-30 17:20:39,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 187 transitions, 2970 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 17:20:39,943 INFO L231 Difference]: Finished difference. Result has 138 places, 160 transitions, 2726 flow [2023-08-30 17:20:39,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2726, PETRI_PLACES=138, PETRI_TRANSITIONS=160} [2023-08-30 17:20:39,944 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 114 predicate places. [2023-08-30 17:20:39,944 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 160 transitions, 2726 flow [2023-08-30 17:20:39,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 348.22222222222223) internal successors, (3134), 9 states have internal predecessors, (3134), 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 17:20:39,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:39,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 17:20:39,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:39,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:39,946 INFO L85 PathProgramCache]: Analyzing trace with hash 802823656, now seen corresponding path program 4 times [2023-08-30 17:20:39,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069189881] [2023-08-30 17:20:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:40,835 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 17:20:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069189881] [2023-08-30 17:20:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069189881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:40,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:40,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721837867] [2023-08-30 17:20:40,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:40,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:41,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 813 [2023-08-30 17:20:41,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 160 transitions, 2726 flow. Second operand has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:41,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:41,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 813 [2023-08-30 17:20:41,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:41,847 INFO L130 PetriNetUnfolder]: 504/878 cut-off events. [2023-08-30 17:20:41,847 INFO L131 PetriNetUnfolder]: For 11097/11097 co-relation queries the response was YES. [2023-08-30 17:20:41,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 878 events. 504/878 cut-off events. For 11097/11097 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4086 event pairs, 29 based on Foata normal form. 4/882 useless extension candidates. Maximal degree in co-relation 6017. Up to 317 conditions per place. [2023-08-30 17:20:41,856 INFO L137 encePairwiseOnDemand]: 805/813 looper letters, 142 selfloop transitions, 47 changer transitions 14/203 dead transitions. [2023-08-30 17:20:41,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 203 transitions, 3520 flow [2023-08-30 17:20:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 17:20:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 17:20:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2906 transitions. [2023-08-30 17:20:41,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468019680196802 [2023-08-30 17:20:41,861 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2906 transitions. [2023-08-30 17:20:41,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2906 transitions. [2023-08-30 17:20:41,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:41,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2906 transitions. [2023-08-30 17:20:41,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 363.25) internal successors, (2906), 8 states have internal predecessors, (2906), 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 17:20:41,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 813.0) internal successors, (7317), 9 states have internal predecessors, (7317), 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 17:20:41,871 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 813.0) internal successors, (7317), 9 states have internal predecessors, (7317), 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 17:20:41,871 INFO L175 Difference]: Start difference. First operand has 138 places, 160 transitions, 2726 flow. Second operand 8 states and 2906 transitions. [2023-08-30 17:20:41,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 203 transitions, 3520 flow [2023-08-30 17:20:41,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 203 transitions, 3403 flow, removed 56 selfloop flow, removed 3 redundant places. [2023-08-30 17:20:41,924 INFO L231 Difference]: Finished difference. Result has 143 places, 163 transitions, 2778 flow [2023-08-30 17:20:41,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2778, PETRI_PLACES=143, PETRI_TRANSITIONS=163} [2023-08-30 17:20:41,924 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 119 predicate places. [2023-08-30 17:20:41,924 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 163 transitions, 2778 flow [2023-08-30 17:20:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 356.57142857142856) internal successors, (2496), 7 states have internal predecessors, (2496), 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 17:20:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:41,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 17:20:41,925 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:41,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 807118418, now seen corresponding path program 10 times [2023-08-30 17:20:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885090224] [2023-08-30 17:20:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:41,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:43,661 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 17:20:43,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:43,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885090224] [2023-08-30 17:20:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885090224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:43,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476324121] [2023-08-30 17:20:43,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:43,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:44,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 813 [2023-08-30 17:20:44,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 2778 flow. Second operand has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:44,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:44,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 813 [2023-08-30 17:20:44,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:44,852 INFO L130 PetriNetUnfolder]: 518/914 cut-off events. [2023-08-30 17:20:44,852 INFO L131 PetriNetUnfolder]: For 11940/11940 co-relation queries the response was YES. [2023-08-30 17:20:44,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 914 events. 518/914 cut-off events. For 11940/11940 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4304 event pairs, 43 based on Foata normal form. 10/924 useless extension candidates. Maximal degree in co-relation 6211. Up to 500 conditions per place. [2023-08-30 17:20:44,859 INFO L137 encePairwiseOnDemand]: 803/813 looper letters, 125 selfloop transitions, 60 changer transitions 13/198 dead transitions. [2023-08-30 17:20:44,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 198 transitions, 3482 flow [2023-08-30 17:20:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:20:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:20:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3587 transitions. [2023-08-30 17:20:44,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44120541205412056 [2023-08-30 17:20:44,862 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3587 transitions. [2023-08-30 17:20:44,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3587 transitions. [2023-08-30 17:20:44,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:44,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3587 transitions. [2023-08-30 17:20:44,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 358.7) internal successors, (3587), 10 states have internal predecessors, (3587), 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 17:20:44,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:44,872 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 813.0) internal successors, (8943), 11 states have internal predecessors, (8943), 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 17:20:44,872 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 2778 flow. Second operand 10 states and 3587 transitions. [2023-08-30 17:20:44,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 198 transitions, 3482 flow [2023-08-30 17:20:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 198 transitions, 3373 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-30 17:20:44,923 INFO L231 Difference]: Finished difference. Result has 151 places, 169 transitions, 2918 flow [2023-08-30 17:20:44,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2918, PETRI_PLACES=151, PETRI_TRANSITIONS=169} [2023-08-30 17:20:44,924 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 127 predicate places. [2023-08-30 17:20:44,925 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 169 transitions, 2918 flow [2023-08-30 17:20:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 353.57142857142856) internal successors, (2475), 7 states have internal predecessors, (2475), 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 17:20:44,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 17:20:44,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:44,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1930230487, now seen corresponding path program 1 times [2023-08-30 17:20:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:44,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272447543] [2023-08-30 17:20:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:20:45,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272447543] [2023-08-30 17:20:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272447543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:20:45,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:20:45,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 17:20:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400189888] [2023-08-30 17:20:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:20:45,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:20:45,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:20:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:20:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:20:46,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 813 [2023-08-30 17:20:46,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 169 transitions, 2918 flow. Second operand has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 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 17:20:46,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:20:46,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 813 [2023-08-30 17:20:46,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:20:46,895 INFO L130 PetriNetUnfolder]: 628/1160 cut-off events. [2023-08-30 17:20:46,895 INFO L131 PetriNetUnfolder]: For 15922/15922 co-relation queries the response was YES. [2023-08-30 17:20:46,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 1160 events. 628/1160 cut-off events. For 15922/15922 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6192 event pairs, 164 based on Foata normal form. 6/1166 useless extension candidates. Maximal degree in co-relation 7699. Up to 477 conditions per place. [2023-08-30 17:20:46,903 INFO L137 encePairwiseOnDemand]: 804/813 looper letters, 133 selfloop transitions, 62 changer transitions 14/209 dead transitions. [2023-08-30 17:20:46,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 209 transitions, 3800 flow [2023-08-30 17:20:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:20:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:20:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2460 transitions. [2023-08-30 17:20:46,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43226146547179756 [2023-08-30 17:20:46,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2460 transitions. [2023-08-30 17:20:46,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2460 transitions. [2023-08-30 17:20:46,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:20:46,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2460 transitions. [2023-08-30 17:20:46,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.42857142857144) internal successors, (2460), 7 states have internal predecessors, (2460), 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 17:20:46,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:46,915 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 813.0) internal successors, (6504), 8 states have internal predecessors, (6504), 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 17:20:46,915 INFO L175 Difference]: Start difference. First operand has 151 places, 169 transitions, 2918 flow. Second operand 7 states and 2460 transitions. [2023-08-30 17:20:46,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 209 transitions, 3800 flow [2023-08-30 17:20:46,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 209 transitions, 3728 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-30 17:20:46,980 INFO L231 Difference]: Finished difference. Result has 157 places, 173 transitions, 3196 flow [2023-08-30 17:20:46,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=813, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3196, PETRI_PLACES=157, PETRI_TRANSITIONS=173} [2023-08-30 17:20:46,980 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 133 predicate places. [2023-08-30 17:20:46,981 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 173 transitions, 3196 flow [2023-08-30 17:20:46,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.7142857142857) internal successors, (2420), 7 states have internal predecessors, (2420), 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 17:20:46,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:20:46,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:20:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 17:20:46,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, whoop_wrapper_write_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-30 17:20:46,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:20:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1269029010, now seen corresponding path program 1 times [2023-08-30 17:20:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:20:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075256803] [2023-08-30 17:20:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:46,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:20:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:20:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:20:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075256803] [2023-08-30 17:20:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075256803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:20:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273703276] [2023-08-30 17:20:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:20:47,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:20:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:20:47,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:20:47,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:20:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:20:48,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 17:20:48,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:20:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver Killed by 15