/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_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:35:53,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:35:53,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:35:53,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:35:53,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:35:53,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:35:53,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:35:53,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:35:53,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:35:53,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:35:53,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:35:53,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:35:53,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:35:53,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:35:53,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:35:53,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:35:53,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:35:53,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:35:53,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:35:53,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:35:53,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:35:53,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:35:53,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:35:53,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:35:53,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:35:53,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:35:53,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:35:53,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:35:53,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:35:53,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:35:53,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:35:53,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:35:53,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:35:53,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:35:53,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:35:53,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:35:53,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:35:53,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:35:53,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:35:53,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:35:53,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:35:53,874 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 18:35:53,896 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:35:53,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:35:53,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:35:53,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:35:53,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:35:53,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:35:53,897 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:35:53,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:35:53,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:35:53,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:35:53,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:35:53,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:35:53,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:35:54,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:35:54,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:35:54,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:35:54,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:35:54,084 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:35:54,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-27 18:35:54,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:35:55,367 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:35:55,367 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-27 18:35:55,401 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c073cbf/189ce1f2e68b4ac48ed3ebe51454d7ab/FLAGb6c1f2c95 [2023-01-27 18:35:55,415 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c073cbf/189ce1f2e68b4ac48ed3ebe51454d7ab [2023-01-27 18:35:55,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:35:55,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:35:55,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:35:55,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:35:55,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:35:55,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:35:55" (1/1) ... [2023-01-27 18:35:55,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a50463b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:55, skipping insertion in model container [2023-01-27 18:35:55,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:35:55" (1/1) ... [2023-01-27 18:35:55,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:35:55,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:35:55,764 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_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-01-27 18:35:57,570 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:35:57,926 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:35:57,927 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:35:57,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:35:57,978 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:35:57,995 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_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-01-27 18:35:58,099 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:35:58,166 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:35:58,166 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:35:58,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,452 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:35:58,456 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:35:58,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58 WrapperNode [2023-01-27 18:35:58,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:35:58,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:35:58,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:35:58,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:35:58,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,608 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 75, statements flattened = 829 [2023-01-27 18:35:58,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:35:58,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:35:58,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:35:58,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:35:58,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:35:58,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:35:58,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:35:58,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:35:58,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (1/1) ... [2023-01-27 18:35:58,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:35:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:35:58,689 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 18:35:58,704 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 18:35:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:35:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 18:35:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:35:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 18:35:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-27 18:35:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-01-27 18:35:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:35:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:35:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-01-27 18:35:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-27 18:35:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-27 18:35:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:35:58,718 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 18:35:59,080 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:35:59,082 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:35:59,673 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:35:59,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:35:59,692 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-01-27 18:35:59,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:35:59 BoogieIcfgContainer [2023-01-27 18:35:59,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:35:59,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:35:59,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:35:59,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:35:59,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:35:55" (1/3) ... [2023-01-27 18:35:59,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36058bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:35:59, skipping insertion in model container [2023-01-27 18:35:59,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:35:58" (2/3) ... [2023-01-27 18:35:59,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36058bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:35:59, skipping insertion in model container [2023-01-27 18:35:59,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:35:59" (3/3) ... [2023-01-27 18:35:59,699 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-01-27 18:35:59,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:35:59,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 18:35:59,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:35:59,812 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 18:35:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 911 transitions, 1838 flow [2023-01-27 18:36:00,002 INFO L130 PetriNetUnfolder]: 60/909 cut-off events. [2023-01-27 18:36:00,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:36:00,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 909 events. 60/909 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1669 event pairs, 0 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-01-27 18:36:00,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 911 transitions, 1838 flow [2023-01-27 18:36:00,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 848 places, 901 transitions, 1811 flow [2023-01-27 18:36:00,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:36:00,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 848 places, 901 transitions, 1811 flow [2023-01-27 18:36:00,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 848 places, 901 transitions, 1811 flow [2023-01-27 18:36:00,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 848 places, 901 transitions, 1811 flow [2023-01-27 18:36:00,175 INFO L130 PetriNetUnfolder]: 60/901 cut-off events. [2023-01-27 18:36:00,175 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:36:00,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 901 events. 60/901 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1537 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-01-27 18:36:00,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 49770 [2023-01-27 18:37:33,528 WARN L222 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:37:40,417 WARN L222 SmtUtils]: Spent 6.89s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:37:58,339 WARN L222 SmtUtils]: Spent 17.92s on a formula simplification. DAG size of input: 309 DAG size of output: 307 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:38:05,179 WARN L222 SmtUtils]: Spent 6.84s on a formula simplification that was a NOOP. DAG size: 288 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:38:42,807 WARN L222 SmtUtils]: Spent 33.41s on a formula simplification. DAG size of input: 659 DAG size of output: 657 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:38:56,329 WARN L222 SmtUtils]: Spent 13.50s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:41:06,920 WARN L222 SmtUtils]: Spent 2.18m on a formula simplification. DAG size of input: 662 DAG size of output: 660 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:42:04,288 WARN L222 SmtUtils]: Spent 57.35s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:42:13,488 INFO L134 LiptonReduction]: Checked pairs total: 39117 [2023-01-27 18:42:13,488 INFO L136 LiptonReduction]: Total number of compositions: 1006 [2023-01-27 18:42:13,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:42:13,500 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;@3a910842, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:42:13,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 18:42:13,506 INFO L130 PetriNetUnfolder]: 4/9 cut-off events. [2023-01-27 18:42:13,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:42:13,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:13,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-27 18:42:13,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:13,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash 3454771, now seen corresponding path program 1 times [2023-01-27 18:42:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341916371] [2023-01-27 18:42:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:13,945 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 18:42:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:13,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341916371] [2023-01-27 18:42:13,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341916371] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:13,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:42:13,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:42:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334452585] [2023-01-27 18:42:13,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:13,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 18:42:13,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:13,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 18:42:13,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 18:42:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 874 out of 1917 [2023-01-27 18:42:13,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 117 flow. Second operand has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 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 18:42:13,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:13,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 874 of 1917 [2023-01-27 18:42:13,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:14,196 INFO L130 PetriNetUnfolder]: 115/229 cut-off events. [2023-01-27 18:42:14,197 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-27 18:42:14,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 229 events. 115/229 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 649 event pairs, 105 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 326. Up to 230 conditions per place. [2023-01-27 18:42:14,198 INFO L137 encePairwiseOnDemand]: 1904/1917 looper letters, 40 selfloop transitions, 0 changer transitions 1/41 dead transitions. [2023-01-27 18:42:14,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-01-27 18:42:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 18:42:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 18:42:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1802 transitions. [2023-01-27 18:42:14,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700052164840897 [2023-01-27 18:42:14,212 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1802 transitions. [2023-01-27 18:42:14,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1802 transitions. [2023-01-27 18:42:14,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:14,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1802 transitions. [2023-01-27 18:42:14,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 901.0) internal successors, (1802), 2 states have internal predecessors, (1802), 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 18:42:14,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 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 18:42:14,230 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 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 18:42:14,231 INFO L175 Difference]: Start difference. First operand has 39 places, 54 transitions, 117 flow. Second operand 2 states and 1802 transitions. [2023-01-27 18:42:14,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-01-27 18:42:14,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:42:14,234 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 84 flow [2023-01-27 18:42:14,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-01-27 18:42:14,237 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-01-27 18:42:14,237 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 84 flow [2023-01-27 18:42:14,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 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 18:42:14,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:14,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:42:14,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:14,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 739763751, now seen corresponding path program 1 times [2023-01-27 18:42:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:14,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045971481] [2023-01-27 18:42:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:14,886 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 18:42:14,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:14,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045971481] [2023-01-27 18:42:14,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045971481] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:14,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:42:14,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:42:14,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110477344] [2023-01-27 18:42:14,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:42:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:42:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:42:14,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 856 out of 1917 [2023-01-27 18:42:14,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 858.3333333333334) internal successors, (2575), 3 states have internal predecessors, (2575), 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 18:42:14,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:14,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 856 of 1917 [2023-01-27 18:42:14,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:15,341 INFO L130 PetriNetUnfolder]: 106/213 cut-off events. [2023-01-27 18:42:15,341 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 18:42:15,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 213 events. 106/213 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 588 event pairs, 96 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 433. Up to 213 conditions per place. [2023-01-27 18:42:15,342 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-01-27 18:42:15,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 168 flow [2023-01-27 18:42:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:42:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:42:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2611 transitions. [2023-01-27 18:42:15,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540079986089376 [2023-01-27 18:42:15,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2611 transitions. [2023-01-27 18:42:15,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2611 transitions. [2023-01-27 18:42:15,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:15,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2611 transitions. [2023-01-27 18:42:15,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 870.3333333333334) internal successors, (2611), 3 states have internal predecessors, (2611), 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 18:42:15,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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 18:42:15,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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 18:42:15,361 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 84 flow. Second operand 3 states and 2611 transitions. [2023-01-27 18:42:15,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 168 flow [2023-01-27 18:42:15,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:42:15,362 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 98 flow [2023-01-27 18:42:15,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-01-27 18:42:15,364 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-01-27 18:42:15,364 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 98 flow [2023-01-27 18:42:15,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 858.3333333333334) internal successors, (2575), 3 states have internal predecessors, (2575), 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 18:42:15,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:15,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:42:15,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:15,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1340012363, now seen corresponding path program 1 times [2023-01-27 18:42:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308269363] [2023-01-27 18:42:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:15,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308269363] [2023-01-27 18:42:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308269363] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583366424] [2023-01-27 18:42:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:15,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:15,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:15,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 18:42:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:16,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 18:42:16,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 18:42:16,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 18:42:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583366424] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 18:42:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-01-27 18:42:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104453011] [2023-01-27 18:42:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:16,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:42:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:42:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:42:16,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 822 out of 1917 [2023-01-27 18:42:16,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 824.6666666666666) internal successors, (2474), 3 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:42:16,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:16,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 822 of 1917 [2023-01-27 18:42:16,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:16,879 INFO L130 PetriNetUnfolder]: 145/292 cut-off events. [2023-01-27 18:42:16,879 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 18:42:16,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 292 events. 145/292 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1051 event pairs, 42 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 597. Up to 202 conditions per place. [2023-01-27 18:42:16,880 INFO L137 encePairwiseOnDemand]: 1912/1917 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-01-27 18:42:16,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 229 flow [2023-01-27 18:42:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:42:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:42:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2519 transitions. [2023-01-27 18:42:16,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380107807337854 [2023-01-27 18:42:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2519 transitions. [2023-01-27 18:42:16,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2519 transitions. [2023-01-27 18:42:16,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:16,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2519 transitions. [2023-01-27 18:42:16,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 839.6666666666666) internal successors, (2519), 3 states have internal predecessors, (2519), 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 18:42:16,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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 18:42:16,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 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 18:42:16,899 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 98 flow. Second operand 3 states and 2519 transitions. [2023-01-27 18:42:16,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 229 flow [2023-01-27 18:42:16,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 18:42:16,900 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 120 flow [2023-01-27 18:42:16,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-01-27 18:42:16,901 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-01-27 18:42:16,901 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 120 flow [2023-01-27 18:42:16,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 824.6666666666666) internal successors, (2474), 3 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:42:16,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:16,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:16,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 18:42:17,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:17,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:17,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1409301911, now seen corresponding path program 1 times [2023-01-27 18:42:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:17,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17511620] [2023-01-27 18:42:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:17,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:17,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17511620] [2023-01-27 18:42:17,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17511620] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:17,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621330257] [2023-01-27 18:42:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:17,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:17,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:17,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:17,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 18:42:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 18:42:18,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:18,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 18:42:18,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-27 18:42:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 18:42:18,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 18:42:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621330257] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 18:42:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-01-27 18:42:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16981231] [2023-01-27 18:42:18,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:18,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:42:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:42:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:42:18,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 819 out of 1917 [2023-01-27 18:42:18,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 820.8) internal successors, (4104), 5 states have internal predecessors, (4104), 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 18:42:18,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:18,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 819 of 1917 [2023-01-27 18:42:18,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:18,931 INFO L130 PetriNetUnfolder]: 139/280 cut-off events. [2023-01-27 18:42:18,931 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-27 18:42:18,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 280 events. 139/280 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 957 event pairs, 60 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 687. Up to 197 conditions per place. [2023-01-27 18:42:18,933 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-01-27 18:42:18,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 221 flow [2023-01-27 18:42:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:42:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:42:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3321 transitions. [2023-01-27 18:42:18,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43309859154929575 [2023-01-27 18:42:18,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3321 transitions. [2023-01-27 18:42:18,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3321 transitions. [2023-01-27 18:42:18,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:18,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3321 transitions. [2023-01-27 18:42:18,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 830.25) internal successors, (3321), 4 states have internal predecessors, (3321), 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 18:42:18,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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 18:42:18,952 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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 18:42:18,952 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 120 flow. Second operand 4 states and 3321 transitions. [2023-01-27 18:42:18,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 221 flow [2023-01-27 18:42:18,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:42:18,954 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 120 flow [2023-01-27 18:42:18,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-01-27 18:42:18,954 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-01-27 18:42:18,954 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 120 flow [2023-01-27 18:42:18,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 820.8) internal successors, (4104), 5 states have internal predecessors, (4104), 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 18:42:18,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:18,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:18,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 18:42:19,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 18:42:19,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:19,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:19,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1332905514, now seen corresponding path program 1 times [2023-01-27 18:42:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:19,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403070146] [2023-01-27 18:42:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:19,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:19,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403070146] [2023-01-27 18:42:19,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403070146] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:19,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894601468] [2023-01-27 18:42:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:19,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:19,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 18:42:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:20,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 18:42:20,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:20,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:42:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894601468] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:42:20,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:42:20,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-27 18:42:20,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224769232] [2023-01-27 18:42:20,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:42:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:42:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:42:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:42:20,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 852 out of 1917 [2023-01-27 18:42:20,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 854.625) internal successors, (6837), 8 states have internal predecessors, (6837), 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 18:42:20,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:20,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 852 of 1917 [2023-01-27 18:42:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:21,297 INFO L130 PetriNetUnfolder]: 139/285 cut-off events. [2023-01-27 18:42:21,298 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-01-27 18:42:21,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 285 events. 139/285 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 942 event pairs, 109 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 687. Up to 275 conditions per place. [2023-01-27 18:42:21,299 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-01-27 18:42:21,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 232 flow [2023-01-27 18:42:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:42:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:42:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6019 transitions. [2023-01-27 18:42:21,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485431105149415 [2023-01-27 18:42:21,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6019 transitions. [2023-01-27 18:42:21,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6019 transitions. [2023-01-27 18:42:21,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:21,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6019 transitions. [2023-01-27 18:42:21,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 859.8571428571429) internal successors, (6019), 7 states have internal predecessors, (6019), 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 18:42:21,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 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 18:42:21,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 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 18:42:21,332 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 120 flow. Second operand 7 states and 6019 transitions. [2023-01-27 18:42:21,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 232 flow [2023-01-27 18:42:21,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:42:21,334 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 156 flow [2023-01-27 18:42:21,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2023-01-27 18:42:21,334 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-01-27 18:42:21,334 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 156 flow [2023-01-27 18:42:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 854.625) internal successors, (6837), 8 states have internal predecessors, (6837), 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 18:42:21,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:21,335 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:21,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 18:42:21,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:21,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:21,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash 174776568, now seen corresponding path program 2 times [2023-01-27 18:42:21,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:21,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854906221] [2023-01-27 18:42:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854906221] [2023-01-27 18:42:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854906221] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:22,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982352062] [2023-01-27 18:42:22,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 18:42:22,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:22,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:22,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 18:42:23,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 18:42:23,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:42:23,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 18:42:23,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:23,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 18:42:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-27 18:42:23,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 18:42:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982352062] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 18:42:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-01-27 18:42:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184495576] [2023-01-27 18:42:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:23,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:42:23,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:23,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:42:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:42:23,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 819 out of 1917 [2023-01-27 18:42:23,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 822.75) internal successors, (3291), 4 states have internal predecessors, (3291), 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 18:42:23,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:23,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 819 of 1917 [2023-01-27 18:42:23,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:24,032 INFO L130 PetriNetUnfolder]: 136/286 cut-off events. [2023-01-27 18:42:24,033 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-27 18:42:24,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 286 events. 136/286 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 989 event pairs, 54 based on Foata normal form. 8/285 useless extension candidates. Maximal degree in co-relation 680. Up to 159 conditions per place. [2023-01-27 18:42:24,034 INFO L137 encePairwiseOnDemand]: 1910/1917 looper letters, 45 selfloop transitions, 7 changer transitions 7/59 dead transitions. [2023-01-27 18:42:24,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 308 flow [2023-01-27 18:42:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:42:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:42:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3326 transitions. [2023-01-27 18:42:24,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337506520605112 [2023-01-27 18:42:24,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3326 transitions. [2023-01-27 18:42:24,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3326 transitions. [2023-01-27 18:42:24,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:24,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3326 transitions. [2023-01-27 18:42:24,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 831.5) internal successors, (3326), 4 states have internal predecessors, (3326), 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 18:42:24,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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 18:42:24,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 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 18:42:24,053 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 156 flow. Second operand 4 states and 3326 transitions. [2023-01-27 18:42:24,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 308 flow [2023-01-27 18:42:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 285 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 18:42:24,055 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 161 flow [2023-01-27 18:42:24,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-01-27 18:42:24,057 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-01-27 18:42:24,057 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 161 flow [2023-01-27 18:42:24,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 822.75) internal successors, (3291), 4 states have internal predecessors, (3291), 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 18:42:24,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:24,059 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:24,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 18:42:24,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:24,273 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:24,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1123117706, now seen corresponding path program 1 times [2023-01-27 18:42:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758935818] [2023-01-27 18:42:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:24,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758935818] [2023-01-27 18:42:25,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758935818] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:25,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498603171] [2023-01-27 18:42:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:25,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:25,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:25,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 18:42:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:27,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-27 18:42:27,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:27,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:42:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498603171] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:42:27,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:42:27,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-27 18:42:27,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983349990] [2023-01-27 18:42:27,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:42:27,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 18:42:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:27,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 18:42:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:42:27,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 856 out of 1917 [2023-01-27 18:42:27,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 161 flow. Second operand has 17 states, 17 states have (on average 857.8235294117648) internal successors, (14583), 17 states have internal predecessors, (14583), 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 18:42:27,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:27,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 856 of 1917 [2023-01-27 18:42:27,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:29,377 INFO L130 PetriNetUnfolder]: 122/281 cut-off events. [2023-01-27 18:42:29,377 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-27 18:42:29,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 281 events. 122/281 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 983 event pairs, 102 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 748. Up to 267 conditions per place. [2023-01-27 18:42:29,378 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 41 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2023-01-27 18:42:29,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 313 flow [2023-01-27 18:42:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:42:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:42:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 10344 transitions. [2023-01-27 18:42:29,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966092853416795 [2023-01-27 18:42:29,394 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 10344 transitions. [2023-01-27 18:42:29,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 10344 transitions. [2023-01-27 18:42:29,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:29,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 10344 transitions. [2023-01-27 18:42:29,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 862.0) internal successors, (10344), 12 states have internal predecessors, (10344), 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 18:42:29,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 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 18:42:29,427 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 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 18:42:29,427 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 161 flow. Second operand 12 states and 10344 transitions. [2023-01-27 18:42:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 313 flow [2023-01-27 18:42:29,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 299 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 18:42:29,429 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 279 flow [2023-01-27 18:42:29,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=279, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-01-27 18:42:29,429 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-01-27 18:42:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 279 flow [2023-01-27 18:42:29,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 857.8235294117648) internal successors, (14583), 17 states have internal predecessors, (14583), 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 18:42:29,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:42:29,432 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:42:29,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 18:42:29,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:29,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 18:42:29,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:42:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 8662986, now seen corresponding path program 2 times [2023-01-27 18:42:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:42:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12156279] [2023-01-27 18:42:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:42:29,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:42:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:42:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:42:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:42:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12156279] [2023-01-27 18:42:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12156279] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:42:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333521130] [2023-01-27 18:42:30,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 18:42:30,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:30,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:42:30,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:42:30,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 18:42:31,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 18:42:31,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:42:31,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 18:42:31,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:42:32,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 18:42:32,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 18:42:32,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-01-27 18:42:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-27 18:42:32,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 18:42:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333521130] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:42:32,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 18:42:32,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2023-01-27 18:42:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676074264] [2023-01-27 18:42:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:42:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:42:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:42:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:42:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:42:32,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 816 out of 1917 [2023-01-27 18:42:32,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 818.6666666666666) internal successors, (4912), 6 states have internal predecessors, (4912), 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 18:42:32,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:42:32,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 816 of 1917 [2023-01-27 18:42:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:42:33,248 INFO L130 PetriNetUnfolder]: 116/269 cut-off events. [2023-01-27 18:42:33,248 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 18:42:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 269 events. 116/269 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 963 event pairs, 52 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 712. Up to 159 conditions per place. [2023-01-27 18:42:33,249 INFO L137 encePairwiseOnDemand]: 1911/1917 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-01-27 18:42:33,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 437 flow [2023-01-27 18:42:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:42:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:42:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4129 transitions. [2023-01-27 18:42:33,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307772561293688 [2023-01-27 18:42:33,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4129 transitions. [2023-01-27 18:42:33,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4129 transitions. [2023-01-27 18:42:33,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:42:33,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4129 transitions. [2023-01-27 18:42:33,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 825.8) internal successors, (4129), 5 states have internal predecessors, (4129), 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 18:42:33,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 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 18:42:33,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 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 18:42:33,267 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 279 flow. Second operand 5 states and 4129 transitions. [2023-01-27 18:42:33,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 437 flow [2023-01-27 18:42:33,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 413 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 18:42:33,269 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-01-27 18:42:33,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-01-27 18:42:33,270 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-01-27 18:42:33,270 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-01-27 18:42:33,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 818.6666666666666) internal successors, (4912), 6 states have internal predecessors, (4912), 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 18:42:33,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-27 18:42:33,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-01-27 18:42:33,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-27 18:42:33,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-01-27 18:42:33,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-01-27 18:42:33,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-01-27 18:42:33,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-27 18:42:33,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 18:42:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:42:33,487 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-01-27 18:42:33,491 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:42:33,491 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:42:33,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:42:33 BasicIcfg [2023-01-27 18:42:33,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:42:33,493 INFO L158 Benchmark]: Toolchain (without parser) took 398074.99ms. Allocated memory was 341.8MB in the beginning and 610.3MB in the end (delta: 268.4MB). Free memory was 277.2MB in the beginning and 278.5MB in the end (delta: -1.3MB). Peak memory consumption was 268.7MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,493 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:42:33,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3038.24ms. Allocated memory was 341.8MB in the beginning and 421.5MB in the end (delta: 79.7MB). Free memory was 277.0MB in the beginning and 313.4MB in the end (delta: -36.5MB). Peak memory consumption was 83.9MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.32ms. Allocated memory is still 421.5MB. Free memory was 313.4MB in the beginning and 301.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,493 INFO L158 Benchmark]: Boogie Preprocessor took 48.61ms. Allocated memory is still 421.5MB. Free memory was 301.9MB in the beginning and 295.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,494 INFO L158 Benchmark]: RCFGBuilder took 1030.10ms. Allocated memory is still 421.5MB. Free memory was 295.6MB in the beginning and 314.4MB in the end (delta: -18.8MB). Peak memory consumption was 42.1MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,494 INFO L158 Benchmark]: TraceAbstraction took 393797.09ms. Allocated memory was 421.5MB in the beginning and 610.3MB in the end (delta: 188.7MB). Free memory was 314.4MB in the beginning and 278.5MB in the end (delta: 35.9MB). Peak memory consumption was 225.1MB. Max. memory is 16.0GB. [2023-01-27 18:42:33,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 3038.24ms. Allocated memory was 341.8MB in the beginning and 421.5MB in the end (delta: 79.7MB). Free memory was 277.0MB in the beginning and 313.4MB in the end (delta: -36.5MB). Peak memory consumption was 83.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 151.32ms. Allocated memory is still 421.5MB. Free memory was 313.4MB in the beginning and 301.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.61ms. Allocated memory is still 421.5MB. Free memory was 301.9MB in the beginning and 295.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 1030.10ms. Allocated memory is still 421.5MB. Free memory was 295.6MB in the beginning and 314.4MB in the end (delta: -18.8MB). Peak memory consumption was 42.1MB. Max. memory is 16.0GB. * TraceAbstraction took 393797.09ms. Allocated memory was 421.5MB in the beginning and 610.3MB in the end (delta: 188.7MB). Free memory was 314.4MB in the beginning and 278.5MB in the end (delta: 35.9MB). Peak memory consumption was 225.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 373.5s, 848 PlacesBefore, 39 PlacesAfterwards, 901 TransitionsBefore, 54 TransitionsAfterwards, 49770 CoEnabledTransitionPairs, 11 FixpointIterations, 559 TrivialSequentialCompositions, 280 ConcurrentSequentialCompositions, 85 TrivialYvCompositions, 44 ConcurrentYvCompositions, 38 ChoiceCompositions, 1006 TotalNumberOfCompositions, 39117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36303, independent: 36127, independent conditional: 0, independent unconditional: 36127, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26140, independent: 26076, independent conditional: 0, independent unconditional: 26076, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36303, independent: 10051, independent conditional: 0, independent unconditional: 10051, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 26140, unknown conditional: 0, unknown unconditional: 26140] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 1134 locations, 7 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: 393.7s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 373.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1018 IncrementalHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 0 mSDtfsCounter, 1018 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=7, InterpolantAutomatonStates: 40, 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: 0.3s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 198 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 216 ConstructedInterpolants, 2 QuantifiedInterpolants, 1057 SizeOfPredicates, 92 NumberOfNonLiveVariables, 7017 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 67/167 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:42:33,527 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...