/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:31:58,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:31:58,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:31:58,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:31:58,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:31:58,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:31:58,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:31:58,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:31:58,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:31:58,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:31:58,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:31:58,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:31:58,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:31:58,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:31:58,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:31:58,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:31:58,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:31:58,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:31:58,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:31:58,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:31:58,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:31:58,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:31:58,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:31:58,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:31:58,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:31:58,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:31:58,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:31:58,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:31:58,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:31:58,505 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:31:58,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:31:58,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:31:58,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:31:58,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:31:58,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:31:58,507 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:31:58,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:31:58,507 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:31:58,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:31:58,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:31:58,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:31:58,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:31:58,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:31:58,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:31:58,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:31:58,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:31:58,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:31:58,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:31:58,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:31:58,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:31:58,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:31:58,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:31:58,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:31:58,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:31:58,511 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:31:58,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:31:58,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:31:58,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:31:58,720 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:31:58,720 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:31:58,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-01-27 18:31:59,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:32:00,318 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:32:00,319 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-01-27 18:32:00,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47e171551/1da6250b138542dfa339b30e109d4710/FLAG2be65fc2d [2023-01-27 18:32:00,372 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47e171551/1da6250b138542dfa339b30e109d4710 [2023-01-27 18:32:00,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:32:00,375 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:32:00,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:32:00,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:32:00,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:32:00,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:32:00" (1/1) ... [2023-01-27 18:32:00,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f5402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:00, skipping insertion in model container [2023-01-27 18:32:00,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:32:00" (1/1) ... [2023-01-27 18:32:00,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:32:00,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:32:00,827 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2023-01-27 18:32:03,364 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:32:03,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:32:03,770 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:32:03,781 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i[5469,5482] [2023-01-27 18:32:03,883 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:32:03,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:32:04,428 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,428 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,428 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,428 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,429 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,429 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,429 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:32:04,435 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:32:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04 WrapperNode [2023-01-27 18:32:04,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:32:04,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:32:04,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:32:04,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:32:04,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,606 INFO L138 Inliner]: procedures = 1354, calls = 1452, calls flagged for inlining = 347, calls inlined = 19, statements flattened = 323 [2023-01-27 18:32:04,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:32:04,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:32:04,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:32:04,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:32:04,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:32:04,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:32:04,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:32:04,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:32:04,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (1/1) ... [2023-01-27 18:32:04,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:32:04,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:32:04,713 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) [2023-01-27 18:32:04,723 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 [2023-01-27 18:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 18:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_nvram_unlocked_ioctl [2023-01-27 18:32:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_nvram_unlocked_ioctl [2023-01-27 18:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:32:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:32:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_read_nvram [2023-01-27 18:32:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_read_nvram [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:32:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-27 18:32:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:32:04,752 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:32:05,221 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:32:05,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:32:05,636 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:32:05,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:32:05,659 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-27 18:32:05,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:32:05 BoogieIcfgContainer [2023-01-27 18:32:05,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:32:05,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:32:05,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:32:05,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:32:05,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:32:00" (1/3) ... [2023-01-27 18:32:05,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2ff3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:32:05, skipping insertion in model container [2023-01-27 18:32:05,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:32:04" (2/3) ... [2023-01-27 18:32:05,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2ff3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:32:05, skipping insertion in model container [2023-01-27 18:32:05,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:32:05" (3/3) ... [2023-01-27 18:32:05,668 INFO L112 eAbstractionObserver]: Analyzing ICFG char_generic_nvram_read_nvram_nvram_unlocked_ioctl.i [2023-01-27 18:32:05,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:32:05,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:32:05,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:32:05,773 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 18:32:05,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 339 transitions, 694 flow [2023-01-27 18:32:05,901 INFO L130 PetriNetUnfolder]: 11/337 cut-off events. [2023-01-27 18:32:05,902 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:32:05,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 11/337 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 282. Up to 4 conditions per place. [2023-01-27 18:32:05,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 339 transitions, 694 flow [2023-01-27 18:32:05,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 329 transitions, 667 flow [2023-01-27 18:32:05,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:32:05,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 329 transitions, 667 flow [2023-01-27 18:32:05,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 329 transitions, 667 flow [2023-01-27 18:32:05,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 329 transitions, 667 flow [2023-01-27 18:32:05,996 INFO L130 PetriNetUnfolder]: 11/329 cut-off events. [2023-01-27 18:32:05,997 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:32:06,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 329 events. 11/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 290 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 282. Up to 4 conditions per place. [2023-01-27 18:32:06,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 9786 [2023-01-27 18:33:10,670 WARN L222 SmtUtils]: Spent 14.98s on a formula simplification that was a NOOP. DAG size: 491 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:33:23,906 WARN L222 SmtUtils]: Spent 13.22s on a formula simplification that was a NOOP. DAG size: 443 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:33:44,977 WARN L222 SmtUtils]: Spent 21.07s on a formula simplification that was a NOOP. DAG size: 494 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:34:03,092 WARN L222 SmtUtils]: Spent 18.11s on a formula simplification that was a NOOP. DAG size: 446 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:35:40,559 WARN L222 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 552 DAG size of output: 548 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:36:18,902 WARN L222 SmtUtils]: Spent 38.33s on a formula simplification that was a NOOP. DAG size: 496 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:37:59,752 WARN L222 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 559 DAG size of output: 555 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:38:25,419 WARN L222 SmtUtils]: Spent 25.65s on a formula simplification that was a NOOP. DAG size: 503 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:39:35,178 WARN L222 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 492 DAG size of output: 488 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:39:56,888 WARN L222 SmtUtils]: Spent 21.70s on a formula simplification that was a NOOP. DAG size: 480 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:41:13,846 WARN L222 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 495 DAG size of output: 491 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:41:41,685 WARN L222 SmtUtils]: Spent 27.83s on a formula simplification that was a NOOP. DAG size: 483 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:41:41,697 INFO L134 LiptonReduction]: Checked pairs total: 9091 [2023-01-27 18:41:41,698 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-01-27 18:41:41,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:41:41,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a2f55c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:41:41,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:41:41,721 INFO L130 PetriNetUnfolder]: 4/16 cut-off events. [2023-01-27 18:41:41,721 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:41:41,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:41,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 18:41:41,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:41,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1008130679, now seen corresponding path program 1 times [2023-01-27 18:41:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235401513] [2023-01-27 18:41:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:42,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235401513] [2023-01-27 18:41:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235401513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:42,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:41:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393175006] [2023-01-27 18:41:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:41:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:42,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:41:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:41:42,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 703 [2023-01-27 18:41:42,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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) [2023-01-27 18:41:42,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:42,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 703 [2023-01-27 18:41:42,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:43,264 INFO L130 PetriNetUnfolder]: 137/232 cut-off events. [2023-01-27 18:41:43,264 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 18:41:43,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 232 events. 137/232 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 707 event pairs, 53 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 412. Up to 186 conditions per place. [2023-01-27 18:41:43,268 INFO L137 encePairwiseOnDemand]: 695/703 looper letters, 15 selfloop transitions, 6 changer transitions 8/29 dead transitions. [2023-01-27 18:41:43,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 29 transitions, 131 flow [2023-01-27 18:41:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:41:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:41:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 900 transitions. [2023-01-27 18:41:43,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267425320056899 [2023-01-27 18:41:43,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 900 transitions. [2023-01-27 18:41:43,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 900 transitions. [2023-01-27 18:41:43,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:43,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 900 transitions. [2023-01-27 18:41:43,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2023-01-27 18:41:43,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:43,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:43,313 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 47 flow. Second operand 3 states and 900 transitions. [2023-01-27 18:41:43,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 29 transitions, 131 flow [2023-01-27 18:41:43,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 29 transitions, 123 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:41:43,322 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 71 flow [2023-01-27 18:41:43,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-01-27 18:41:43,329 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-01-27 18:41:43,330 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 71 flow [2023-01-27 18:41:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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) [2023-01-27 18:41:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:43,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:41:43,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:43,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1187279274, now seen corresponding path program 1 times [2023-01-27 18:41:43,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:43,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275293056] [2023-01-27 18:41:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275293056] [2023-01-27 18:41:44,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275293056] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:41:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265803425] [2023-01-27 18:41:44,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:41:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:41:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:41:44,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 703 [2023-01-27 18:41:44,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 284.1666666666667) internal successors, (1705), 6 states have internal predecessors, (1705), 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) [2023-01-27 18:41:44,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:44,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 703 [2023-01-27 18:41:44,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:45,262 INFO L130 PetriNetUnfolder]: 68/124 cut-off events. [2023-01-27 18:41:45,262 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-27 18:41:45,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 124 events. 68/124 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 3 based on Foata normal form. 3/117 useless extension candidates. Maximal degree in co-relation 262. Up to 90 conditions per place. [2023-01-27 18:41:45,263 INFO L137 encePairwiseOnDemand]: 695/703 looper letters, 19 selfloop transitions, 9 changer transitions 2/30 dead transitions. [2023-01-27 18:41:45,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 30 transitions, 171 flow [2023-01-27 18:41:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:41:45,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:41:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1444 transitions. [2023-01-27 18:41:45,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2023-01-27 18:41:45,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1444 transitions. [2023-01-27 18:41:45,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1444 transitions. [2023-01-27 18:41:45,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:45,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1444 transitions. [2023-01-27 18:41:45,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 288.8) internal successors, (1444), 5 states have internal predecessors, (1444), 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) [2023-01-27 18:41:45,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:45,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:45,278 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 71 flow. Second operand 5 states and 1444 transitions. [2023-01-27 18:41:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 30 transitions, 171 flow [2023-01-27 18:41:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:41:45,280 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 104 flow [2023-01-27 18:41:45,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-01-27 18:41:45,281 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-01-27 18:41:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 104 flow [2023-01-27 18:41:45,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 284.1666666666667) internal successors, (1705), 6 states have internal predecessors, (1705), 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) [2023-01-27 18:41:45,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:45,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:45,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:41:45,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:45,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash -5231298, now seen corresponding path program 1 times [2023-01-27 18:41:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:45,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153164359] [2023-01-27 18:41:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:45,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153164359] [2023-01-27 18:41:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153164359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:46,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:41:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295151950] [2023-01-27 18:41:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:46,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:41:46,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:41:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:41:46,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 703 [2023-01-27 18:41:46,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 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) [2023-01-27 18:41:46,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:46,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 703 [2023-01-27 18:41:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:46,724 INFO L130 PetriNetUnfolder]: 69/131 cut-off events. [2023-01-27 18:41:46,724 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-01-27 18:41:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 131 events. 69/131 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 415 event pairs, 7 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 274. Up to 89 conditions per place. [2023-01-27 18:41:46,725 INFO L137 encePairwiseOnDemand]: 697/703 looper letters, 19 selfloop transitions, 6 changer transitions 7/32 dead transitions. [2023-01-27 18:41:46,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 212 flow [2023-01-27 18:41:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:41:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:41:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2023-01-27 18:41:46,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4122332859174964 [2023-01-27 18:41:46,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2023-01-27 18:41:46,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2023-01-27 18:41:46,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:46,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2023-01-27 18:41:46,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 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) [2023-01-27 18:41:46,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:46,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:46,740 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 104 flow. Second operand 5 states and 1449 transitions. [2023-01-27 18:41:46,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 212 flow [2023-01-27 18:41:46,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 201 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:41:46,742 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 99 flow [2023-01-27 18:41:46,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2023-01-27 18:41:46,743 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-01-27 18:41:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 99 flow [2023-01-27 18:41:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 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) [2023-01-27 18:41:46,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:46,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:41:46,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:46,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1485686408, now seen corresponding path program 2 times [2023-01-27 18:41:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467094583] [2023-01-27 18:41:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467094583] [2023-01-27 18:41:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467094583] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:48,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:41:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643880084] [2023-01-27 18:41:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:48,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:41:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:41:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:41:48,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 703 [2023-01-27 18:41:48,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 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) [2023-01-27 18:41:48,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:48,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 703 [2023-01-27 18:41:48,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:49,065 INFO L130 PetriNetUnfolder]: 42/90 cut-off events. [2023-01-27 18:41:49,065 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-01-27 18:41:49,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 90 events. 42/90 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 5 based on Foata normal form. 6/94 useless extension candidates. Maximal degree in co-relation 190. Up to 52 conditions per place. [2023-01-27 18:41:49,066 INFO L137 encePairwiseOnDemand]: 698/703 looper letters, 17 selfloop transitions, 6 changer transitions 4/27 dead transitions. [2023-01-27 18:41:49,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 187 flow [2023-01-27 18:41:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:41:49,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:41:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1425 transitions. [2023-01-27 18:41:49,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2023-01-27 18:41:49,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1425 transitions. [2023-01-27 18:41:49,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1425 transitions. [2023-01-27 18:41:49,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:49,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1425 transitions. [2023-01-27 18:41:49,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2023-01-27 18:41:49,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:49,080 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:49,080 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 99 flow. Second operand 5 states and 1425 transitions. [2023-01-27 18:41:49,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 187 flow [2023-01-27 18:41:49,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 177 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 18:41:49,084 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 99 flow [2023-01-27 18:41:49,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-01-27 18:41:49,085 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2023-01-27 18:41:49,085 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 99 flow [2023-01-27 18:41:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 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) [2023-01-27 18:41:49,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:49,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:41:49,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:49,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash -315650535, now seen corresponding path program 1 times [2023-01-27 18:41:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443613265] [2023-01-27 18:41:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443613265] [2023-01-27 18:41:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443613265] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:50,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:50,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:41:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934284716] [2023-01-27 18:41:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:41:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:41:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:41:50,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 703 [2023-01-27 18:41:50,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 99 flow. Second operand has 7 states, 7 states have (on average 283.42857142857144) internal successors, (1984), 7 states have internal predecessors, (1984), 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) [2023-01-27 18:41:50,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:50,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 703 [2023-01-27 18:41:50,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:50,901 INFO L130 PetriNetUnfolder]: 34/78 cut-off events. [2023-01-27 18:41:50,901 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 18:41:50,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 78 events. 34/78 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 199 event pairs, 6 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 120. Up to 29 conditions per place. [2023-01-27 18:41:50,902 INFO L137 encePairwiseOnDemand]: 696/703 looper letters, 16 selfloop transitions, 8 changer transitions 7/31 dead transitions. [2023-01-27 18:41:50,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 220 flow [2023-01-27 18:41:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:41:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:41:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2286 transitions. [2023-01-27 18:41:50,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064722617354196 [2023-01-27 18:41:50,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2286 transitions. [2023-01-27 18:41:50,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2286 transitions. [2023-01-27 18:41:50,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:50,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2286 transitions. [2023-01-27 18:41:50,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 285.75) internal successors, (2286), 8 states have internal predecessors, (2286), 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) [2023-01-27 18:41:50,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 703.0) internal successors, (6327), 9 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:50,920 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 703.0) internal successors, (6327), 9 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:50,920 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 99 flow. Second operand 8 states and 2286 transitions. [2023-01-27 18:41:50,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 220 flow [2023-01-27 18:41:50,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 18:41:50,922 INFO L231 Difference]: Finished difference. Result has 32 places, 18 transitions, 124 flow [2023-01-27 18:41:50,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2023-01-27 18:41:50,923 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2023-01-27 18:41:50,923 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 18 transitions, 124 flow [2023-01-27 18:41:50,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 283.42857142857144) internal successors, (1984), 7 states have internal predecessors, (1984), 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) [2023-01-27 18:41:50,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:50,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:41:50,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:50,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1519557245, now seen corresponding path program 2 times [2023-01-27 18:41:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987429112] [2023-01-27 18:41:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:51,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:51,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987429112] [2023-01-27 18:41:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987429112] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:41:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902133560] [2023-01-27 18:41:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:41:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:41:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:41:51,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 703 [2023-01-27 18:41:51,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 18 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 283.42857142857144) internal successors, (1984), 7 states have internal predecessors, (1984), 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) [2023-01-27 18:41:51,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:51,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 703 [2023-01-27 18:41:51,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:53,070 INFO L130 PetriNetUnfolder]: 27/65 cut-off events. [2023-01-27 18:41:53,070 INFO L131 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2023-01-27 18:41:53,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 65 events. 27/65 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 1 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 230. Up to 23 conditions per place. [2023-01-27 18:41:53,071 INFO L137 encePairwiseOnDemand]: 697/703 looper letters, 8 selfloop transitions, 5 changer transitions 15/28 dead transitions. [2023-01-27 18:41:53,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 213 flow [2023-01-27 18:41:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:41:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:41:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-27 18:41:53,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066246697825645 [2023-01-27 18:41:53,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-27 18:41:53,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-27 18:41:53,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:53,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-27 18:41:53,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 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) [2023-01-27 18:41:53,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:53,088 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:53,088 INFO L175 Difference]: Start difference. First operand has 32 places, 18 transitions, 124 flow. Second operand 7 states and 2001 transitions. [2023-01-27 18:41:53,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 213 flow [2023-01-27 18:41:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-27 18:41:53,090 INFO L231 Difference]: Finished difference. Result has 34 places, 12 transitions, 75 flow [2023-01-27 18:41:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=12} [2023-01-27 18:41:53,090 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 12 predicate places. [2023-01-27 18:41:53,090 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 12 transitions, 75 flow [2023-01-27 18:41:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 283.42857142857144) internal successors, (1984), 7 states have internal predecessors, (1984), 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) [2023-01-27 18:41:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:41:53,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:41:53,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:41:53,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:41:53,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:41:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1188350985, now seen corresponding path program 3 times [2023-01-27 18:41:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:41:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697578523] [2023-01-27 18:41:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:41:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:41:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:41:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:41:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:41:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697578523] [2023-01-27 18:41:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697578523] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:41:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:41:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:41:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659519541] [2023-01-27 18:41:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:41:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:41:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:41:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:41:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:41:54,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 703 [2023-01-27 18:41:54,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 12 transitions, 75 flow. Second operand has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 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) [2023-01-27 18:41:54,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:41:54,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 703 [2023-01-27 18:41:54,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:41:55,793 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-01-27 18:41:55,794 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-01-27 18:41:55,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 15 events. 3/15 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 2/17 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2023-01-27 18:41:55,794 INFO L137 encePairwiseOnDemand]: 698/703 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-01-27 18:41:55,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 12 transitions, 91 flow [2023-01-27 18:41:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:41:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:41:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1681 transitions. [2023-01-27 18:41:55,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39853010905642483 [2023-01-27 18:41:55,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1681 transitions. [2023-01-27 18:41:55,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1681 transitions. [2023-01-27 18:41:55,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:41:55,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1681 transitions. [2023-01-27 18:41:55,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.1666666666667) internal successors, (1681), 6 states have internal predecessors, (1681), 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) [2023-01-27 18:41:55,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:55,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:41:55,809 INFO L175 Difference]: Start difference. First operand has 34 places, 12 transitions, 75 flow. Second operand 6 states and 1681 transitions. [2023-01-27 18:41:55,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 12 transitions, 91 flow [2023-01-27 18:41:55,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 12 transitions, 53 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-01-27 18:41:55,810 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-01-27 18:41:55,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-01-27 18:41:55,811 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-01-27 18:41:55,811 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-01-27 18:41:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 279.25) internal successors, (2234), 8 states have internal predecessors, (2234), 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) [2023-01-27 18:41:55,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:41:55,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:41:55,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:41:55,818 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_read_nvramErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-27 18:41:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:41:55,819 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2023-01-27 18:41:55,823 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:41:55,823 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:41:55,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:41:55 BasicIcfg [2023-01-27 18:41:55,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:41:55,830 INFO L158 Benchmark]: Toolchain (without parser) took 595454.59ms. Allocated memory was 459.3MB in the beginning and 710.9MB in the end (delta: 251.7MB). Free memory was 406.9MB in the beginning and 527.4MB in the end (delta: -120.5MB). Peak memory consumption was 133.5MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,830 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 214.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:41:55,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4059.57ms. Allocated memory was 459.3MB in the beginning and 591.4MB in the end (delta: 132.1MB). Free memory was 406.9MB in the beginning and 472.2MB in the end (delta: -65.2MB). Peak memory consumption was 124.8MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 170.83ms. Allocated memory is still 591.4MB. Free memory was 472.2MB in the beginning and 462.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,830 INFO L158 Benchmark]: Boogie Preprocessor took 76.44ms. Allocated memory is still 591.4MB. Free memory was 462.7MB in the beginning and 458.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,831 INFO L158 Benchmark]: RCFGBuilder took 976.50ms. Allocated memory is still 591.4MB. Free memory was 458.5MB in the beginning and 414.5MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,831 INFO L158 Benchmark]: TraceAbstraction took 590166.15ms. Allocated memory was 591.4MB in the beginning and 710.9MB in the end (delta: 119.5MB). Free memory was 414.5MB in the beginning and 527.4MB in the end (delta: -112.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2023-01-27 18:41:55,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 214.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 4059.57ms. Allocated memory was 459.3MB in the beginning and 591.4MB in the end (delta: 132.1MB). Free memory was 406.9MB in the beginning and 472.2MB in the end (delta: -65.2MB). Peak memory consumption was 124.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 170.83ms. Allocated memory is still 591.4MB. Free memory was 472.2MB in the beginning and 462.7MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Preprocessor took 76.44ms. Allocated memory is still 591.4MB. Free memory was 462.7MB in the beginning and 458.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 976.50ms. Allocated memory is still 591.4MB. Free memory was 458.5MB in the beginning and 414.5MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.0GB. * TraceAbstraction took 590166.15ms. Allocated memory was 591.4MB in the beginning and 710.9MB in the end (delta: 119.5MB). Free memory was 414.5MB in the beginning and 527.4MB in the end (delta: -112.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 575.8s, 325 PlacesBefore, 22 PlacesAfterwards, 329 TransitionsBefore, 19 TransitionsAfterwards, 9786 CoEnabledTransitionPairs, 10 FixpointIterations, 185 TrivialSequentialCompositions, 132 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 364 TotalNumberOfCompositions, 9091 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7587, independent: 7476, independent conditional: 0, independent unconditional: 7476, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5323, independent: 5290, independent conditional: 0, independent unconditional: 5290, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7587, independent: 2186, independent conditional: 0, independent unconditional: 2186, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 5323, unknown conditional: 0, unknown unconditional: 5323] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 458 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 590.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 575.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 0 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 827 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:41:55,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...