/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_open_pc8736x_gpio_configure.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:50:42,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:50:42,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:50:42,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:50:42,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:50:42,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:50:42,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:50:42,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:50:42,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:50:42,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:50:42,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:50:42,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:50:42,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:50:42,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:50:42,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:50:42,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:50:42,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:50:42,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:50:42,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:50:42,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:50:42,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:50:42,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:50:42,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:50:42,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:50:42,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 18:50:42,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 18:50:42,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 18:50:42,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 18:50:42,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 18:50:42,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 18:50:42,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:50:42,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:50:42,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:50:42,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:50:42,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:50:42,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:50:42,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:50:42,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:50:42,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:50:42,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:50:42,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:50:42,887 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 18:50:42,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:50:42,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:50:42,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:50:42,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:50:42,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:50:42,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:50:42,910 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:50:42,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:50:42,910 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:50:42,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:50:42,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:50:42,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:50:42,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:50:42,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:50:42,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:50:42,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:50:42,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:50:42,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:50:42,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:50:42,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:50:42,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:50:42,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:50:42,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:50:42,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:50:43,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:50:43,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:50:43,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:50:43,131 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:50:43,132 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:50:43,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_configure.i [2023-01-27 18:50:44,113 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:50:44,535 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:50:44,535 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_configure.i [2023-01-27 18:50:44,569 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cde2829/438fd6d8fb224845a5831a5554d987ef/FLAG2ebde8507 [2023-01-27 18:50:44,583 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27cde2829/438fd6d8fb224845a5831a5554d987ef [2023-01-27 18:50:44,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:50:44,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:50:44,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:50:44,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:50:44,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:50:44,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:50:44" (1/1) ... [2023-01-27 18:50:44,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fc8411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:44, skipping insertion in model container [2023-01-27 18:50:44,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:50:44" (1/1) ... [2023-01-27 18:50:44,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:50:44,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:50:44,908 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_open_pc8736x_gpio_configure.i[5469,5482] [2023-01-27 18:50:47,648 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:50:48,172 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:50:48,172 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:50:48,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:50:48,254 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:50:48,281 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_open_pc8736x_gpio_configure.i[5469,5482] [2023-01-27 18:50:48,408 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-01-27 18:50:48,436 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:50:48,437 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-01-27 18:50:48,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:50:48,773 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,774 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:50:48,779 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:50:48,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48 WrapperNode [2023-01-27 18:50:48,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:50:48,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:50:48,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:50:48,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:50:48,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,947 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 70, statements flattened = 746 [2023-01-27 18:50:48,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:50:48,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:50:48,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:50:48,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:50:48,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:48,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:49,002 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:49,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:49,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:50:49,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:50:49,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:50:49,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:50:49,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (1/1) ... [2023-01-27 18:50:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:50:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:50:49,037 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 18:50:49,085 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 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:50:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:50:49,106 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-01-27 18:50:49,106 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-27 18:50:49,107 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_configure [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:50:49,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:50:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:50:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-27 18:50:49,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:50:49,109 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 18:50:49,536 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:50:49,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:50:50,106 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:50:50,136 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:50:50,136 INFO L302 CfgBuilder]: Removed 21 assume(true) statements. [2023-01-27 18:50:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:50:50 BoogieIcfgContainer [2023-01-27 18:50:50,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:50:50,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:50:50,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:50:50,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:50:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:50:44" (1/3) ... [2023-01-27 18:50:50,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb8f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:50:50, skipping insertion in model container [2023-01-27 18:50:50,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:50:48" (2/3) ... [2023-01-27 18:50:50,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18fb8f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:50:50, skipping insertion in model container [2023-01-27 18:50:50,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:50:50" (3/3) ... [2023-01-27 18:50:50,144 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_configure.i [2023-01-27 18:50:50,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:50:50,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 18:50:50,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:50:50,243 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 18:50:50,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 776 places, 818 transitions, 1652 flow [2023-01-27 18:50:50,521 INFO L130 PetriNetUnfolder]: 49/816 cut-off events. [2023-01-27 18:50:50,521 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:50:50,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 816 events. 49/816 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1204 event pairs, 0 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-01-27 18:50:50,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 776 places, 818 transitions, 1652 flow [2023-01-27 18:50:50,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 766 places, 808 transitions, 1625 flow [2023-01-27 18:50:50,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:50:50,546 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 766 places, 808 transitions, 1625 flow [2023-01-27 18:50:50,551 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 766 places, 808 transitions, 1625 flow [2023-01-27 18:50:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 766 places, 808 transitions, 1625 flow [2023-01-27 18:50:50,698 INFO L130 PetriNetUnfolder]: 49/808 cut-off events. [2023-01-27 18:50:50,699 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:50:50,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 808 events. 49/808 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1110 event pairs, 0 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-01-27 18:50:50,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 18816 [2023-01-27 18:52:24,249 WARN L222 SmtUtils]: Spent 21.12s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:52:45,798 WARN L222 SmtUtils]: Spent 21.55s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:53:00,699 WARN L222 SmtUtils]: Spent 14.90s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:53:15,616 WARN L222 SmtUtils]: Spent 14.92s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:55:33,947 WARN L222 SmtUtils]: Spent 2.23m on a formula simplification. DAG size of input: 601 DAG size of output: 599 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:56:41,078 WARN L222 SmtUtils]: Spent 1.12m 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 18:58:43,458 WARN L222 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 607 DAG size of output: 603 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 18:59:41,643 WARN L222 SmtUtils]: Spent 58.16s 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 18:59:58,784 WARN L222 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 321 DAG size of output: 304 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:00:01,199 INFO L134 LiptonReduction]: Checked pairs total: 15299 [2023-01-27 19:00:01,199 INFO L136 LiptonReduction]: Total number of compositions: 909 [2023-01-27 19:00:01,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:00:01,215 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;@11bf7734, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:00:01,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 19:00:01,241 INFO L130 PetriNetUnfolder]: 4/9 cut-off events. [2023-01-27 19:00:01,241 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:00:01,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:00:01,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-01-27 19:00:01,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:00:01,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:00:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 3031322, now seen corresponding path program 1 times [2023-01-27 19:00:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:00:01,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110213235] [2023-01-27 19:00:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:00:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:00:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:00:01,727 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 19:00:01,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:00:01,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110213235] [2023-01-27 19:00:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110213235] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:00:01,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:00:01,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:00:01,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360478191] [2023-01-27 19:00:01,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:00:01,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 19:00:01,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:00:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 19:00:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 19:00:01,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 787 out of 1727 [2023-01-27 19:00:01,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 45 transitions, 99 flow. Second operand has 2 states, 2 states have (on average 788.5) internal successors, (1577), 2 states have internal predecessors, (1577), 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 19:00:01,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:00:01,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 787 of 1727 [2023-01-27 19:00:01,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:00:01,984 INFO L130 PetriNetUnfolder]: 61/127 cut-off events. [2023-01-27 19:00:01,984 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-27 19:00:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 127 events. 61/127 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 331 event pairs, 51 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 200. Up to 128 conditions per place. [2023-01-27 19:00:01,986 INFO L137 encePairwiseOnDemand]: 1717/1727 looper letters, 31 selfloop transitions, 0 changer transitions 4/35 dead transitions. [2023-01-27 19:00:01,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 149 flow [2023-01-27 19:00:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 19:00:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 19:00:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1619 transitions. [2023-01-27 19:00:02,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4687319050376375 [2023-01-27 19:00:02,005 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1619 transitions. [2023-01-27 19:00:02,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1619 transitions. [2023-01-27 19:00:02,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:00:02,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1619 transitions. [2023-01-27 19:00:02,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 809.5) internal successors, (1619), 2 states have internal predecessors, (1619), 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 19:00:02,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1727.0) internal successors, (5181), 3 states have internal predecessors, (5181), 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 19:00:02,031 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1727.0) internal successors, (5181), 3 states have internal predecessors, (5181), 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 19:00:02,034 INFO L175 Difference]: Start difference. First operand has 33 places, 45 transitions, 99 flow. Second operand 2 states and 1619 transitions. [2023-01-27 19:00:02,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 149 flow [2023-01-27 19:00:02,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 19:00:02,043 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 65 flow [2023-01-27 19:00:02,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1727, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2023-01-27 19:00:02,048 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-01-27 19:00:02,048 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 65 flow [2023-01-27 19:00:02,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 788.5) internal successors, (1577), 2 states have internal predecessors, (1577), 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 19:00:02,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:00:02,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 19:00:02,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:00:02,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:00:02,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:00:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash 108908993, now seen corresponding path program 1 times [2023-01-27 19:00:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:00:02,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247571993] [2023-01-27 19:00:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:00:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:00:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:00:02,638 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 19:00:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:00:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247571993] [2023-01-27 19:00:02,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247571993] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:00:02,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:00:02,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:00:02,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181815420] [2023-01-27 19:00:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:00:02,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:00:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:00:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:00:02,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:00:02,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 1727 [2023-01-27 19:00:02,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 757.0) internal successors, (2271), 3 states have internal predecessors, (2271), 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 19:00:02,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:00:02,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 1727 [2023-01-27 19:00:02,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:00:03,538 INFO L130 PetriNetUnfolder]: 39/89 cut-off events. [2023-01-27 19:00:03,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:00:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 89 events. 39/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 242 event pairs, 17 based on Foata normal form. 8/87 useless extension candidates. Maximal degree in co-relation 189. Up to 78 conditions per place. [2023-01-27 19:00:03,539 INFO L137 encePairwiseOnDemand]: 1722/1727 looper letters, 32 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-01-27 19:00:03,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 36 transitions, 149 flow [2023-01-27 19:00:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:00:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:00:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2302 transitions. [2023-01-27 19:00:03,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443157691565335 [2023-01-27 19:00:03,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2302 transitions. [2023-01-27 19:00:03,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2302 transitions. [2023-01-27 19:00:03,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:00:03,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2302 transitions. [2023-01-27 19:00:03,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 767.3333333333334) internal successors, (2302), 3 states have internal predecessors, (2302), 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 19:00:03,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1727.0) internal successors, (6908), 4 states have internal predecessors, (6908), 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 19:00:03,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1727.0) internal successors, (6908), 4 states have internal predecessors, (6908), 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 19:00:03,577 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 65 flow. Second operand 3 states and 2302 transitions. [2023-01-27 19:00:03,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 36 transitions, 149 flow [2023-01-27 19:00:03,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:00:03,578 INFO L231 Difference]: Finished difference. Result has 29 places, 34 transitions, 91 flow [2023-01-27 19:00:03,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1727, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=34} [2023-01-27 19:00:03,579 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-01-27 19:00:03,581 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 34 transitions, 91 flow [2023-01-27 19:00:03,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 757.0) internal successors, (2271), 3 states have internal predecessors, (2271), 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 19:00:03,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:00:03,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:00:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:00:03,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:00:03,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:00:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -918788636, now seen corresponding path program 1 times [2023-01-27 19:00:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:00:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889572829] [2023-01-27 19:00:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:00:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:00:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:00:04,406 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 19:00:04,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:00:04,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889572829] [2023-01-27 19:00:04,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889572829] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:00:04,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:00:04,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 19:00:04,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355354874] [2023-01-27 19:00:04,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:00:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:00:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:00:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:00:04,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:00:04,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 715 out of 1727 [2023-01-27 19:00:04,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 34 transitions, 91 flow. Second operand has 7 states, 7 states have (on average 716.0) internal successors, (5012), 7 states have internal predecessors, (5012), 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 19:00:04,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:00:04,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 715 of 1727 [2023-01-27 19:00:04,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:00:05,296 INFO L130 PetriNetUnfolder]: 34/80 cut-off events. [2023-01-27 19:00:05,296 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 19:00:05,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 80 events. 34/80 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 219 event pairs, 2 based on Foata normal form. 3/74 useless extension candidates. Maximal degree in co-relation 207. Up to 35 conditions per place. [2023-01-27 19:00:05,297 INFO L137 encePairwiseOnDemand]: 1714/1727 looper letters, 27 selfloop transitions, 12 changer transitions 1/40 dead transitions. [2023-01-27 19:00:05,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 195 flow [2023-01-27 19:00:05,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:00:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:00:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4331 transitions. [2023-01-27 19:00:05,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4179695039567651 [2023-01-27 19:00:05,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4331 transitions. [2023-01-27 19:00:05,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4331 transitions. [2023-01-27 19:00:05,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:00:05,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4331 transitions. [2023-01-27 19:00:05,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 721.8333333333334) internal successors, (4331), 6 states have internal predecessors, (4331), 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 19:00:05,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1727.0) internal successors, (12089), 7 states have internal predecessors, (12089), 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 19:00:05,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1727.0) internal successors, (12089), 7 states have internal predecessors, (12089), 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 19:00:05,349 INFO L175 Difference]: Start difference. First operand has 29 places, 34 transitions, 91 flow. Second operand 6 states and 4331 transitions. [2023-01-27 19:00:05,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 195 flow [2023-01-27 19:00:05,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:00:05,351 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 119 flow [2023-01-27 19:00:05,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1727, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-01-27 19:00:05,352 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-01-27 19:00:05,352 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 119 flow [2023-01-27 19:00:05,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 716.0) internal successors, (5012), 7 states have internal predecessors, (5012), 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 19:00:05,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:00:05,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:00:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:00:05,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:00:05,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:00:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1016561602, now seen corresponding path program 1 times [2023-01-27 19:00:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:00:05,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054239568] [2023-01-27 19:00:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:00:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:00:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:00:06,437 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 19:00:06,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:00:06,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054239568] [2023-01-27 19:00:06,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054239568] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:00:06,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:00:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 19:00:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193152711] [2023-01-27 19:00:06,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:00:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:00:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:00:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:00:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:00:06,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1727 [2023-01-27 19:00:06,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 19:00:06,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:00:06,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1727 [2023-01-27 19:00:06,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:00:06,872 INFO L130 PetriNetUnfolder]: 34/84 cut-off events. [2023-01-27 19:00:06,873 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-01-27 19:00:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 84 events. 34/84 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 245 event pairs, 8 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 255. Up to 34 conditions per place. [2023-01-27 19:00:06,873 INFO L137 encePairwiseOnDemand]: 1722/1727 looper letters, 25 selfloop transitions, 4 changer transitions 12/41 dead transitions. [2023-01-27 19:00:06,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 231 flow [2023-01-27 19:00:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:00:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:00:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3775 transitions. [2023-01-27 19:00:06,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371742906774754 [2023-01-27 19:00:06,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3775 transitions. [2023-01-27 19:00:06,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3775 transitions. [2023-01-27 19:00:06,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:00:06,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3775 transitions. [2023-01-27 19:00:06,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 755.0) internal successors, (3775), 5 states have internal predecessors, (3775), 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 19:00:06,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1727.0) internal successors, (10362), 6 states have internal predecessors, (10362), 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 19:00:06,895 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1727.0) internal successors, (10362), 6 states have internal predecessors, (10362), 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 19:00:06,895 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 119 flow. Second operand 5 states and 3775 transitions. [2023-01-27 19:00:06,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 231 flow [2023-01-27 19:00:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 211 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 19:00:06,896 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 89 flow [2023-01-27 19:00:06,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1727, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-27 19:00:06,897 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-01-27 19:00:06,897 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 89 flow [2023-01-27 19:00:06,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 748.5) internal successors, (4491), 6 states have internal predecessors, (4491), 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 19:00:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:00:06,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:00:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:00:06,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:00:06,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:00:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1806745026, now seen corresponding path program 2 times [2023-01-27 19:00:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:00:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707414332] [2023-01-27 19:00:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:00:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:00:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:00:08,159 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 19:00:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:00:08,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707414332] [2023-01-27 19:00:08,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707414332] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:00:08,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:00:08,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 19:00:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120677563] [2023-01-27 19:00:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:00:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 19:00:08,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:00:08,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 19:00:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 19:00:08,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1727 [2023-01-27 19:00:08,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 89 flow. Second operand has 8 states, 8 states have (on average 711.125) internal successors, (5689), 8 states have internal predecessors, (5689), 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 19:00:08,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:00:08,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1727 [2023-01-27 19:00:08,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:00:09,178 INFO L130 PetriNetUnfolder]: 11/32 cut-off events. [2023-01-27 19:00:09,178 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-01-27 19:00:09,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 32 events. 11/32 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 2 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 81. Up to 14 conditions per place. [2023-01-27 19:00:09,181 INFO L137 encePairwiseOnDemand]: 1717/1727 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-01-27 19:00:09,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 137 flow [2023-01-27 19:00:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:00:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:00:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4289 transitions. [2023-01-27 19:00:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41391623238756997 [2023-01-27 19:00:09,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4289 transitions. [2023-01-27 19:00:09,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4289 transitions. [2023-01-27 19:00:09,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:00:09,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4289 transitions. [2023-01-27 19:00:09,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 714.8333333333334) internal successors, (4289), 6 states have internal predecessors, (4289), 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 19:00:09,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1727.0) internal successors, (12089), 7 states have internal predecessors, (12089), 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 19:00:09,207 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1727.0) internal successors, (12089), 7 states have internal predecessors, (12089), 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 19:00:09,207 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 89 flow. Second operand 6 states and 4289 transitions. [2023-01-27 19:00:09,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 137 flow [2023-01-27 19:00:09,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 115 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-27 19:00:09,208 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-01-27 19:00:09,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1727, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-01-27 19:00:09,208 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-01-27 19:00:09,209 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-01-27 19:00:09,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 711.125) internal successors, (5689), 8 states have internal predecessors, (5689), 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 19:00:09,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 19:00:09,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 19:00:09,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 19:00:09,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 19:00:09,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 19:00:09,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:00:09,213 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-01-27 19:00:09,217 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:00:09,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:00:09,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:00:09 BasicIcfg [2023-01-27 19:00:09,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:00:09,219 INFO L158 Benchmark]: Toolchain (without parser) took 564633.17ms. Allocated memory was 599.8MB in the beginning and 744.5MB in the end (delta: 144.7MB). Free memory was 554.3MB in the beginning and 232.3MB in the end (delta: 322.0MB). Peak memory consumption was 469.2MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,219 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 378.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:00:09,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4192.53ms. Allocated memory is still 599.8MB. Free memory was 554.3MB in the beginning and 420.0MB in the end (delta: 134.3MB). Peak memory consumption was 153.6MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.40ms. Allocated memory was 599.8MB in the beginning and 744.5MB in the end (delta: 144.7MB). Free memory was 420.0MB in the beginning and 675.3MB in the end (delta: -255.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,220 INFO L158 Benchmark]: Boogie Preprocessor took 58.30ms. Allocated memory is still 744.5MB. Free memory was 675.3MB in the beginning and 669.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,220 INFO L158 Benchmark]: RCFGBuilder took 1127.50ms. Allocated memory is still 744.5MB. Free memory was 669.0MB in the beginning and 593.5MB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,220 INFO L158 Benchmark]: TraceAbstraction took 559079.13ms. Allocated memory is still 744.5MB. Free memory was 593.5MB in the beginning and 232.3MB in the end (delta: 361.1MB). Peak memory consumption was 362.2MB. Max. memory is 16.0GB. [2023-01-27 19:00:09,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory is still 378.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 4192.53ms. Allocated memory is still 599.8MB. Free memory was 554.3MB in the beginning and 420.0MB in the end (delta: 134.3MB). Peak memory consumption was 153.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 167.40ms. Allocated memory was 599.8MB in the beginning and 744.5MB in the end (delta: 144.7MB). Free memory was 420.0MB in the beginning and 675.3MB in the end (delta: -255.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 58.30ms. Allocated memory is still 744.5MB. Free memory was 675.3MB in the beginning and 669.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 1127.50ms. Allocated memory is still 744.5MB. Free memory was 669.0MB in the beginning and 593.5MB in the end (delta: 75.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.0GB. * TraceAbstraction took 559079.13ms. Allocated memory is still 744.5MB. Free memory was 593.5MB in the beginning and 232.3MB in the end (delta: 361.1MB). Peak memory consumption was 362.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 550.6s, 766 PlacesBefore, 33 PlacesAfterwards, 808 TransitionsBefore, 45 TransitionsAfterwards, 18816 CoEnabledTransitionPairs, 11 FixpointIterations, 562 TrivialSequentialCompositions, 213 ConcurrentSequentialCompositions, 85 TrivialYvCompositions, 19 ConcurrentYvCompositions, 30 ChoiceCompositions, 909 TotalNumberOfCompositions, 15299 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13961, independent: 13866, independent conditional: 0, independent unconditional: 13866, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9994, independent: 9953, independent conditional: 0, independent unconditional: 9953, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13961, independent: 3913, independent conditional: 0, independent unconditional: 3913, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 9994, unknown conditional: 0, unknown unconditional: 9994] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 970 locations, 5 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: 559.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 550.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 433 IncrementalHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 0 mSDtfsCounter, 433 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 19:00:09,253 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...