./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:52:42,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:52:42,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:52:42,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:52:42,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:52:42,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:52:42,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:52:42,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:52:42,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:52:42,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:52:42,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:52:42,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:52:42,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:52:42,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:52:42,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:52:42,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:52:42,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:52:42,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:52:42,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:52:42,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:52:42,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:52:42,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:52:42,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:52:42,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:52:42,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:52:42,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:52:42,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:52:42,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:52:42,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:52:42,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:52:42,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:52:42,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:52:42,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:52:42,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:52:42,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:52:42,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:52:42,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:52:42,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:52:42,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:52:42,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:52:42,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:52:42,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:52:42,798 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:52:42,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:52:42,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:52:42,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:52:42,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:52:42,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:52:42,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:52:42,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:52:42,801 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:52:42,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:52:42,802 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:52:42,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:52:42,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:52:42,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:52:42,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:52:42,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:52:42,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:52:42,804 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:52:42,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:52:42,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:52:42,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:52:42,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:52:42,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:52:42,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:52:42,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:52:42,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:52:42,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:52:42,807 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:52:42,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:52:42,807 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:52:42,807 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:52:43,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:52:43,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:52:43,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:52:43,140 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:52:43,140 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:52:43,142 INFO L432 ainManager$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_change.i [2023-08-30 23:52:44,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:52:44,799 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:52:44,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 23:52:44,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cada36e9/6b7315982fb9424a80a5b2e8d48ae45b/FLAG8ec5447ad [2023-08-30 23:52:44,863 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cada36e9/6b7315982fb9424a80a5b2e8d48ae45b [2023-08-30 23:52:44,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:52:44,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:52:44,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:52:44,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:52:44,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:52:44,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:52:44" (1/1) ... [2023-08-30 23:52:44,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7bc0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:44, skipping insertion in model container [2023-08-30 23:52:44,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:52:44" (1/1) ... [2023-08-30 23:52:44,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:52:45,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:52:45,338 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_change.i[5469,5482] [2023-08-30 23:52:47,774 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:52:48,218 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:52:48,219 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:52:48,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:52:48,286 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:52:48,299 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_change.i[5469,5482] [2023-08-30 23:52:48,470 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:52:48,554 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:52:48,555 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:52:48,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,011 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,012 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:52:49,017 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:52:49,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49 WrapperNode [2023-08-30 23:52:49,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:52:49,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:52:49,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:52:49,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:52:49,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,167 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 56, statements flattened = 737 [2023-08-30 23:52:49,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:52:49,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:52:49,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:52:49,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:52:49,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:52:49,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:52:49,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:52:49,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:52:49,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (1/1) ... [2023-08-30 23:52:49,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:52:49,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:52:49,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:52:49,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:52:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:52:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:52:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:52:49,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:52:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:52:49,350 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:52:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:52:49,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:52:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 23:52:49,350 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 23:52:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:52:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:52:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 23:52:49,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:52:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:52:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:52:49,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:52:49,355 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:52:49,898 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:52:49,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:52:50,544 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:52:50,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:52:50,554 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 23:52:50,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:52:50 BoogieIcfgContainer [2023-08-30 23:52:50,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:52:50,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:52:50,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:52:50,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:52:50,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:52:44" (1/3) ... [2023-08-30 23:52:50,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb3a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:52:50, skipping insertion in model container [2023-08-30 23:52:50,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:52:49" (2/3) ... [2023-08-30 23:52:50,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb3a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:52:50, skipping insertion in model container [2023-08-30 23:52:50,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:52:50" (3/3) ... [2023-08-30 23:52:50,563 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 23:52:50,569 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:52:50,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:52:50,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 23:52:50,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:52:50,694 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:52:50,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 756 places, 805 transitions, 1626 flow [2023-08-30 23:52:51,005 INFO L130 PetriNetUnfolder]: 56/803 cut-off events. [2023-08-30 23:52:51,006 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:52:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 803 events. 56/803 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1170 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-08-30 23:52:51,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 756 places, 805 transitions, 1626 flow [2023-08-30 23:52:51,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 746 places, 795 transitions, 1599 flow [2023-08-30 23:52:51,030 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:52:51,042 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 746 places, 795 transitions, 1599 flow [2023-08-30 23:52:51,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 746 places, 795 transitions, 1599 flow [2023-08-30 23:52:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 746 places, 795 transitions, 1599 flow [2023-08-30 23:52:51,187 INFO L130 PetriNetUnfolder]: 56/795 cut-off events. [2023-08-30 23:52:51,188 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:52:51,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 795 events. 56/795 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1105 event pairs, 0 based on Foata normal form. 0/735 useless extension candidates. Maximal degree in co-relation 646. Up to 9 conditions per place. [2023-08-30 23:52:51,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 17334 [2023-08-30 23:54:20,607 WARN L222 SmtUtils]: Spent 13.66s on a formula simplification. DAG size of input: 292 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:54:27,179 WARN L222 SmtUtils]: Spent 6.57s 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) [2023-08-30 23:54:41,228 WARN L222 SmtUtils]: Spent 14.05s on a formula simplification. DAG size of input: 298 DAG size of output: 293 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:54:47,742 WARN L222 SmtUtils]: Spent 6.51s 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) [2023-08-30 23:57:05,393 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 669 DAG size of output: 667 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:58:06,483 WARN L222 SmtUtils]: Spent 1.02m 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) [2023-08-30 23:59:08,040 WARN L222 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 672 DAG size of output: 670 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:59:33,067 WARN L222 SmtUtils]: Spent 25.00s 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) [2023-08-30 23:59:39,840 INFO L134 LiptonReduction]: Checked pairs total: 16655 [2023-08-30 23:59:39,841 INFO L136 LiptonReduction]: Total number of compositions: 878 [2023-08-30 23:59:39,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:59:39,869 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2fdef74a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:59:39,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 23:59:39,878 INFO L130 PetriNetUnfolder]: 4/8 cut-off events. [2023-08-30 23:59:39,878 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:59:39,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:39,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:59:39,879 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 6 more)] === [2023-08-30 23:59:39,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2965003, now seen corresponding path program 1 times [2023-08-30 23:59:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:39,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929149526] [2023-08-30 23:59:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:40,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:40,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929149526] [2023-08-30 23:59:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929149526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:59:40,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:59:40,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889765918] [2023-08-30 23:59:40,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:40,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:59:40,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:59:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:59:40,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 765 out of 1683 [2023-08-30 23:59:40,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 766.5) internal successors, (1533), 2 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:40,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:40,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 765 of 1683 [2023-08-30 23:59:40,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:41,073 INFO L130 PetriNetUnfolder]: 223/415 cut-off events. [2023-08-30 23:59:41,073 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 23:59:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 415 events. 223/415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1376 event pairs, 213 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 704. Up to 416 conditions per place. [2023-08-30 23:59:41,076 INFO L137 encePairwiseOnDemand]: 1668/1683 looper letters, 44 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2023-08-30 23:59:41,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 185 flow [2023-08-30 23:59:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:59:41,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:59:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1589 transitions. [2023-08-30 23:59:41,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720736779560309 [2023-08-30 23:59:41,103 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1589 transitions. [2023-08-30 23:59:41,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1589 transitions. [2023-08-30 23:59:41,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:41,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1589 transitions. [2023-08-30 23:59:41,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 794.5) internal successors, (1589), 2 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:41,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1683.0) internal successors, (5049), 3 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:41,133 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1683.0) internal successors, (5049), 3 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:41,135 INFO L175 Difference]: Start difference. First operand has 42 places, 59 transitions, 127 flow. Second operand 2 states and 1589 transitions. [2023-08-30 23:59:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 185 flow [2023-08-30 23:59:41,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:59:41,140 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 92 flow [2023-08-30 23:59:41,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2023-08-30 23:59:41,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-30 23:59:41,145 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 92 flow [2023-08-30 23:59:41,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 766.5) internal successors, (1533), 2 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:41,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:41,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:59:41,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:59:41,147 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 6 more)] === [2023-08-30 23:59:41,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1838204332, now seen corresponding path program 1 times [2023-08-30 23:59:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:41,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529533101] [2023-08-30 23:59:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:41,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529533101] [2023-08-30 23:59:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529533101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:41,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:59:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:59:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439963148] [2023-08-30 23:59:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:41,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:59:41,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:41,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:59:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:59:42,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1683 [2023-08-30 23:59:42,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:42,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:42,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1683 [2023-08-30 23:59:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:42,588 INFO L130 PetriNetUnfolder]: 324/614 cut-off events. [2023-08-30 23:59:42,588 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 23:59:42,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 614 events. 324/614 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2643 event pairs, 129 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 1247. Up to 369 conditions per place. [2023-08-30 23:59:42,591 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 57 selfloop transitions, 4 changer transitions 1/62 dead transitions. [2023-08-30 23:59:42,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 255 flow [2023-08-30 23:59:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:59:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:59:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2304 transitions. [2023-08-30 23:59:42,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563279857397504 [2023-08-30 23:59:42,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2304 transitions. [2023-08-30 23:59:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2304 transitions. [2023-08-30 23:59:42,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:42,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2304 transitions. [2023-08-30 23:59:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 768.0) internal successors, (2304), 3 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:42,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:42,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:42,617 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 92 flow. Second operand 3 states and 2304 transitions. [2023-08-30 23:59:42,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 255 flow [2023-08-30 23:59:42,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:59:42,619 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 122 flow [2023-08-30 23:59:42,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-08-30 23:59:42,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 23:59:42,621 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 122 flow [2023-08-30 23:59:42,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:42,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:42,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:59:42,624 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 6 more)] === [2023-08-30 23:59:42,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1149757591, now seen corresponding path program 1 times [2023-08-30 23:59:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272289819] [2023-08-30 23:59:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272289819] [2023-08-30 23:59:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272289819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:43,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:59:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 23:59:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004281844] [2023-08-30 23:59:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 23:59:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 23:59:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:59:43,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-30 23:59:43,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 743.0) internal successors, (5201), 7 states have internal predecessors, (5201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:43,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:43,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-30 23:59:43,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:45,163 INFO L130 PetriNetUnfolder]: 296/567 cut-off events. [2023-08-30 23:59:45,164 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 23:59:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 567 events. 296/567 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2472 event pairs, 74 based on Foata normal form. 19/534 useless extension candidates. Maximal degree in co-relation 1321. Up to 380 conditions per place. [2023-08-30 23:59:45,166 INFO L137 encePairwiseOnDemand]: 1670/1683 looper letters, 63 selfloop transitions, 13 changer transitions 2/78 dead transitions. [2023-08-30 23:59:45,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 355 flow [2023-08-30 23:59:45,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:59:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:59:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4529 transitions. [2023-08-30 23:59:45,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485046543870073 [2023-08-30 23:59:45,178 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4529 transitions. [2023-08-30 23:59:45,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4529 transitions. [2023-08-30 23:59:45,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:45,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4529 transitions. [2023-08-30 23:59:45,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 754.8333333333334) internal successors, (4529), 6 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:45,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:45,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:45,210 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 122 flow. Second operand 6 states and 4529 transitions. [2023-08-30 23:59:45,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 355 flow [2023-08-30 23:59:45,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:59:45,214 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 163 flow [2023-08-30 23:59:45,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-30 23:59:45,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 23:59:45,215 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 163 flow [2023-08-30 23:59:45,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 743.0) internal successors, (5201), 7 states have internal predecessors, (5201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:45,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:59:45,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:59:45,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1154154743, now seen corresponding path program 1 times [2023-08-30 23:59:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:45,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711333340] [2023-08-30 23:59:45,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:45,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711333340] [2023-08-30 23:59:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711333340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:59:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:59:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979403178] [2023-08-30 23:59:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:59:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:59:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:59:45,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 1683 [2023-08-30 23:59:45,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 757.3333333333334) internal successors, (2272), 3 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:45,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:45,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 1683 [2023-08-30 23:59:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:46,608 INFO L130 PetriNetUnfolder]: 296/568 cut-off events. [2023-08-30 23:59:46,608 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2023-08-30 23:59:46,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 568 events. 296/568 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2256 event pairs, 253 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 1420. Up to 568 conditions per place. [2023-08-30 23:59:46,611 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 48 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 23:59:46,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 265 flow [2023-08-30 23:59:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:59:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:59:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2312 transitions. [2023-08-30 23:59:46,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2023-08-30 23:59:46,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2312 transitions. [2023-08-30 23:59:46,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2312 transitions. [2023-08-30 23:59:46,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:46,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2312 transitions. [2023-08-30 23:59:46,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 770.6666666666666) internal successors, (2312), 3 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:46,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:46,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:46,632 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 163 flow. Second operand 3 states and 2312 transitions. [2023-08-30 23:59:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 265 flow [2023-08-30 23:59:46,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:59:46,635 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 160 flow [2023-08-30 23:59:46,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-30 23:59:46,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 23:59:46,636 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 160 flow [2023-08-30 23:59:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 757.3333333333334) internal successors, (2272), 3 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:46,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:46,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:46,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:59:46,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:59:46,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash 849000484, now seen corresponding path program 1 times [2023-08-30 23:59:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:46,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416437229] [2023-08-30 23:59:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416437229] [2023-08-30 23:59:47,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416437229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:59:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047618297] [2023-08-30 23:59:47,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:47,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:47,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:59:47,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:59:47,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 23:59:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:47,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 23:59:47,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:59:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:59:47,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:59:47,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047618297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:47,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:59:47,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 23:59:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993981880] [2023-08-30 23:59:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:47,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:59:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:59:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:59:47,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 1683 [2023-08-30 23:59:47,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 748.6666666666666) internal successors, (2246), 3 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:47,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:47,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 1683 [2023-08-30 23:59:47,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:48,459 INFO L130 PetriNetUnfolder]: 344/660 cut-off events. [2023-08-30 23:59:48,459 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-08-30 23:59:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 660 events. 344/660 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2931 event pairs, 107 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 1628. Up to 367 conditions per place. [2023-08-30 23:59:48,462 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 60 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-08-30 23:59:48,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 341 flow [2023-08-30 23:59:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:59:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:59:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2297 transitions. [2023-08-30 23:59:48,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45494157258863144 [2023-08-30 23:59:48,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2297 transitions. [2023-08-30 23:59:48,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2297 transitions. [2023-08-30 23:59:48,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:48,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2297 transitions. [2023-08-30 23:59:48,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 765.6666666666666) internal successors, (2297), 3 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:48,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:48,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1683.0) internal successors, (6732), 4 states have internal predecessors, (6732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:48,482 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 160 flow. Second operand 3 states and 2297 transitions. [2023-08-30 23:59:48,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 341 flow [2023-08-30 23:59:48,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:59:48,485 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 193 flow [2023-08-30 23:59:48,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-08-30 23:59:48,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-30 23:59:48,486 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 193 flow [2023-08-30 23:59:48,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 748.6666666666666) internal successors, (2246), 3 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:48,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:48,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:48,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 23:59:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:48,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:59:48,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash -185362531, now seen corresponding path program 1 times [2023-08-30 23:59:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:48,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182504618] [2023-08-30 23:59:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182504618] [2023-08-30 23:59:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182504618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:59:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473109578] [2023-08-30 23:59:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:59:49,313 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) [2023-08-30 23:59:49,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 23:59:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:49,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 23:59:49,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:59:50,009 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 23:59:50,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-08-30 23:59:50,074 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 [2023-08-30 23:59:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:59:50,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:59:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473109578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:50,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:59:50,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 23:59:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534261957] [2023-08-30 23:59:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:50,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:59:50,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:59:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:59:50,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-30 23:59:50,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 743.6666666666666) internal successors, (4462), 6 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:50,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:50,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-30 23:59:50,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:51,386 INFO L130 PetriNetUnfolder]: 335/643 cut-off events. [2023-08-30 23:59:51,386 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-08-30 23:59:51,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 643 events. 335/643 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2807 event pairs, 70 based on Foata normal form. 8/619 useless extension candidates. Maximal degree in co-relation 1696. Up to 398 conditions per place. [2023-08-30 23:59:51,404 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 61 selfloop transitions, 10 changer transitions 1/72 dead transitions. [2023-08-30 23:59:51,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 398 flow [2023-08-30 23:59:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:59:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:59:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4517 transitions. [2023-08-30 23:59:51,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473163002574767 [2023-08-30 23:59:51,415 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4517 transitions. [2023-08-30 23:59:51,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4517 transitions. [2023-08-30 23:59:51,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:51,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4517 transitions. [2023-08-30 23:59:51,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 752.8333333333334) internal successors, (4517), 6 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:51,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:51,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:51,440 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 193 flow. Second operand 6 states and 4517 transitions. [2023-08-30 23:59:51,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 398 flow [2023-08-30 23:59:51,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:59:51,443 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 220 flow [2023-08-30 23:59:51,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-08-30 23:59:51,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 23:59:51,444 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 220 flow [2023-08-30 23:59:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 743.6666666666666) internal successors, (4462), 6 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:51,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 23:59:51,655 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,SelfDestructingSolverStorable5 [2023-08-30 23:59:51,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:59:51,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1114404398, now seen corresponding path program 1 times [2023-08-30 23:59:51,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841180664] [2023-08-30 23:59:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841180664] [2023-08-30 23:59:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841180664] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:59:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874611184] [2023-08-30 23:59:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:52,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:59:52,569 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) [2023-08-30 23:59:52,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 23:59:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:53,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 23:59:53,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:59:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:53,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:59:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874611184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:59:54,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:59:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 23:59:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676507873] [2023-08-30 23:59:54,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:59:54,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:59:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:59:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:59:54,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 751 out of 1683 [2023-08-30 23:59:54,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 753.625) internal successors, (6029), 8 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:54,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:54,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 751 of 1683 [2023-08-30 23:59:54,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:54,942 INFO L130 PetriNetUnfolder]: 335/648 cut-off events. [2023-08-30 23:59:54,942 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2023-08-30 23:59:54,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 648 events. 335/648 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2739 event pairs, 270 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 1748. Up to 643 conditions per place. [2023-08-30 23:59:54,946 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 51 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-30 23:59:54,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 354 flow [2023-08-30 23:59:54,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 23:59:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 23:59:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4565 transitions. [2023-08-30 23:59:54,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45206971677559915 [2023-08-30 23:59:54,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4565 transitions. [2023-08-30 23:59:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4565 transitions. [2023-08-30 23:59:54,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:54,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4565 transitions. [2023-08-30 23:59:54,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 760.8333333333334) internal successors, (4565), 6 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:54,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:54,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:54,983 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 220 flow. Second operand 6 states and 4565 transitions. [2023-08-30 23:59:54,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 354 flow [2023-08-30 23:59:54,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 349 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 23:59:54,987 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 281 flow [2023-08-30 23:59:54,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-30 23:59:54,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-30 23:59:54,988 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 281 flow [2023-08-30 23:59:54,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 753.625) internal successors, (6029), 8 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:54,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:54,989 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:55,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 23:59:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:55,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-30 23:59:55,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash 781361293, now seen corresponding path program 2 times [2023-08-30 23:59:55,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:55,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354678239] [2023-08-30 23:59:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:59:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:59:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:59:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354678239] [2023-08-30 23:59:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354678239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:59:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873521982] [2023-08-30 23:59:56,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:59:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:59:56,376 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) [2023-08-30 23:59:56,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 23:59:57,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:59:57,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:59:57,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 23:59:57,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:59:57,982 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 [2023-08-30 23:59:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 23:59:58,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:59:58,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873521982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:59:58,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:59:58,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 23:59:58,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201109734] [2023-08-30 23:59:58,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:59:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:59:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:59:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:59:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:59:58,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 1683 [2023-08-30 23:59:58,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 747.75) internal successors, (2991), 4 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:58,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:59:58,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 1683 [2023-08-30 23:59:58,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:59:58,993 INFO L130 PetriNetUnfolder]: 323/634 cut-off events. [2023-08-30 23:59:58,993 INFO L131 PetriNetUnfolder]: For 656/656 co-relation queries the response was YES. [2023-08-30 23:59:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 634 events. 323/634 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2685 event pairs, 163 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 1719. Up to 374 conditions per place. [2023-08-30 23:59:58,996 INFO L137 encePairwiseOnDemand]: 1677/1683 looper letters, 54 selfloop transitions, 9 changer transitions 11/74 dead transitions. [2023-08-30 23:59:58,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 491 flow [2023-08-30 23:59:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:59:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:59:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3035 transitions. [2023-08-30 23:59:59,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45083184789067143 [2023-08-30 23:59:59,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3035 transitions. [2023-08-30 23:59:59,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3035 transitions. [2023-08-30 23:59:59,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:59:59,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3035 transitions. [2023-08-30 23:59:59,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 758.75) internal successors, (3035), 4 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1683.0) internal successors, (8415), 5 states have internal predecessors, (8415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:59,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1683.0) internal successors, (8415), 5 states have internal predecessors, (8415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:59,018 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 281 flow. Second operand 4 states and 3035 transitions. [2023-08-30 23:59:59,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 491 flow [2023-08-30 23:59:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 74 transitions, 481 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 23:59:59,021 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 295 flow [2023-08-30 23:59:59,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 23:59:59,022 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-30 23:59:59,022 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 295 flow [2023-08-30 23:59:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.75) internal successors, (2991), 4 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:59:59,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:59:59,023 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:59:59,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 23:59:59,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:59:59,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 6 more)] === [2023-08-30 23:59:59,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:59:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1766874052, now seen corresponding path program 1 times [2023-08-30 23:59:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:59:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59105582] [2023-08-30 23:59:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:59:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:59:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:00,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:00,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59105582] [2023-08-31 00:00:00,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59105582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:00,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570007386] [2023-08-31 00:00:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:00,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:00,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:00,121 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) [2023-08-31 00:00:00,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 00:00:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:00,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-31 00:00:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:00,870 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-31 00:00:00,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-08-31 00:00:01,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-31 00:00:01,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-31 00:00:01,610 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 [2023-08-31 00:00:01,619 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 [2023-08-31 00:00:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 00:00:01,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:00:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570007386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:00:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:00:01,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-31 00:00:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112052903] [2023-08-31 00:00:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:00:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:00:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:00:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 00:00:01,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 745 out of 1683 [2023-08-31 00:00:01,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 747.8333333333334) internal successors, (4487), 6 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:01,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:01,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 745 of 1683 [2023-08-31 00:00:01,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:03,707 INFO L130 PetriNetUnfolder]: 302/617 cut-off events. [2023-08-31 00:00:03,708 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-08-31 00:00:03,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 617 events. 302/617 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2783 event pairs, 114 based on Foata normal form. 4/614 useless extension candidates. Maximal degree in co-relation 1766. Up to 349 conditions per place. [2023-08-31 00:00:03,711 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 59 selfloop transitions, 6 changer transitions 16/81 dead transitions. [2023-08-31 00:00:03,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 526 flow [2023-08-31 00:00:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 00:00:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 00:00:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3796 transitions. [2023-08-31 00:00:03,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510992275698158 [2023-08-31 00:00:03,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3796 transitions. [2023-08-31 00:00:03,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3796 transitions. [2023-08-31 00:00:03,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:03,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3796 transitions. [2023-08-31 00:00:03,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 759.2) internal successors, (3796), 5 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:03,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1683.0) internal successors, (10098), 6 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:03,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1683.0) internal successors, (10098), 6 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:03,736 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 295 flow. Second operand 5 states and 3796 transitions. [2023-08-31 00:00:03,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 526 flow [2023-08-31 00:00:03,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 484 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-31 00:00:03,741 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 250 flow [2023-08-31 00:00:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-08-31 00:00:03,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-31 00:00:03,742 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 250 flow [2023-08-31 00:00:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 747.8333333333334) internal successors, (4487), 6 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:03,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:03,743 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:03,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-31 00:00:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:03,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:00:03,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash -730774836, now seen corresponding path program 1 times [2023-08-31 00:00:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147171715] [2023-08-31 00:00:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147171715] [2023-08-31 00:00:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147171715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401001783] [2023-08-31 00:00:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:05,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:05,222 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) [2023-08-31 00:00:05,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 00:00:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:06,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-31 00:00:06,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:07,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:00:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401001783] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 00:00:07,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 00:00:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-31 00:00:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669837408] [2023-08-31 00:00:07,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 00:00:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 00:00:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 00:00:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-08-31 00:00:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 1683 [2023-08-31 00:00:07,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 755.0714285714286) internal successors, (10571), 14 states have internal predecessors, (10571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:07,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:07,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 1683 [2023-08-31 00:00:07,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:09,555 INFO L130 PetriNetUnfolder]: 211/463 cut-off events. [2023-08-31 00:00:09,555 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2023-08-31 00:00:09,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 463 events. 211/463 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1890 event pairs, 185 based on Foata normal form. 9/465 useless extension candidates. Maximal degree in co-relation 1218. Up to 449 conditions per place. [2023-08-31 00:00:09,557 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 47 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2023-08-31 00:00:09,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 426 flow [2023-08-31 00:00:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 00:00:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 00:00:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9112 transitions. [2023-08-31 00:00:09,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2023-08-31 00:00:09,572 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9112 transitions. [2023-08-31 00:00:09,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9112 transitions. [2023-08-31 00:00:09,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:09,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9112 transitions. [2023-08-31 00:00:09,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 759.3333333333334) internal successors, (9112), 12 states have internal predecessors, (9112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:09,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1683.0) internal successors, (21879), 13 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:09,615 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1683.0) internal successors, (21879), 13 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:09,615 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 250 flow. Second operand 12 states and 9112 transitions. [2023-08-31 00:00:09,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 426 flow [2023-08-31 00:00:09,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 404 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-31 00:00:09,618 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 372 flow [2023-08-31 00:00:09,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=372, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-08-31 00:00:09,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2023-08-31 00:00:09,620 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 372 flow [2023-08-31 00:00:09,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 755.0714285714286) internal successors, (10571), 14 states have internal predecessors, (10571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:09,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:09,623 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:09,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 00:00:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:09,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:00:09,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 638604460, now seen corresponding path program 2 times [2023-08-31 00:00:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342940354] [2023-08-31 00:00:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:09,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342940354] [2023-08-31 00:00:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342940354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476374143] [2023-08-31 00:00:11,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 00:00:11,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:11,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:11,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 00:00:11,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 00:00:12,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 00:00:12,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:00:12,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-31 00:00:12,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:12,559 INFO L321 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2023-08-31 00:00:12,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2023-08-31 00:00:13,232 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 [2023-08-31 00:00:13,336 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 [2023-08-31 00:00:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 00:00:13,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:00:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476374143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:00:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:00:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-31 00:00:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721406210] [2023-08-31 00:00:13,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:00:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 00:00:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 00:00:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-08-31 00:00:13,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 740 out of 1683 [2023-08-31 00:00:13,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:13,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:13,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 740 of 1683 [2023-08-31 00:00:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:15,030 INFO L130 PetriNetUnfolder]: 225/497 cut-off events. [2023-08-31 00:00:15,030 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-31 00:00:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 497 events. 225/497 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2083 event pairs, 110 based on Foata normal form. 8/498 useless extension candidates. Maximal degree in co-relation 1289. Up to 282 conditions per place. [2023-08-31 00:00:15,035 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 59 selfloop transitions, 7 changer transitions 17/83 dead transitions. [2023-08-31 00:00:15,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 593 flow [2023-08-31 00:00:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:00:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:00:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4504 transitions. [2023-08-31 00:00:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44602891661715194 [2023-08-31 00:00:15,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4504 transitions. [2023-08-31 00:00:15,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4504 transitions. [2023-08-31 00:00:15,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:15,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4504 transitions. [2023-08-31 00:00:15,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 750.6666666666666) internal successors, (4504), 6 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:15,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:15,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:15,059 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 372 flow. Second operand 6 states and 4504 transitions. [2023-08-31 00:00:15,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 593 flow [2023-08-31 00:00:15,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 553 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-31 00:00:15,063 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 346 flow [2023-08-31 00:00:15,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2023-08-31 00:00:15,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-31 00:00:15,065 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 346 flow [2023-08-31 00:00:15,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:15,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:15,066 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:15,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 00:00:15,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:15,279 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:00:15,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 81689220, now seen corresponding path program 3 times [2023-08-31 00:00:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:15,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477706287] [2023-08-31 00:00:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:16,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:16,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477706287] [2023-08-31 00:00:16,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477706287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269393461] [2023-08-31 00:00:16,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 00:00:16,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:16,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 00:00:16,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 00:00:17,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 00:00:17,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:00:17,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-31 00:00:17,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:17,421 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-31 00:00:17,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-08-31 00:00:18,101 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 [2023-08-31 00:00:18,161 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 [2023-08-31 00:00:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 00:00:18,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:00:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269393461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:00:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:00:18,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-31 00:00:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953402266] [2023-08-31 00:00:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:00:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 00:00:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 00:00:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-31 00:00:18,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 740 out of 1683 [2023-08-31 00:00:18,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:18,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:18,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 740 of 1683 [2023-08-31 00:00:18,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:19,677 INFO L130 PetriNetUnfolder]: 221/493 cut-off events. [2023-08-31 00:00:19,677 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-08-31 00:00:19,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 493 events. 221/493 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2085 event pairs, 91 based on Foata normal form. 8/494 useless extension candidates. Maximal degree in co-relation 1364. Up to 265 conditions per place. [2023-08-31 00:00:19,680 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 66 selfloop transitions, 7 changer transitions 14/87 dead transitions. [2023-08-31 00:00:19,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 616 flow [2023-08-31 00:00:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:00:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:00:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4509 transitions. [2023-08-31 00:00:19,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446524064171123 [2023-08-31 00:00:19,688 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4509 transitions. [2023-08-31 00:00:19,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4509 transitions. [2023-08-31 00:00:19,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:19,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4509 transitions. [2023-08-31 00:00:19,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 751.5) internal successors, (4509), 6 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:19,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:19,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:19,703 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 346 flow. Second operand 6 states and 4509 transitions. [2023-08-31 00:00:19,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 616 flow [2023-08-31 00:00:19,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 578 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-31 00:00:19,707 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 367 flow [2023-08-31 00:00:19,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2023-08-31 00:00:19,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-31 00:00:19,709 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 367 flow [2023-08-31 00:00:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:19,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:19,710 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:19,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 00:00:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-31 00:00:19,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 6 more)] === [2023-08-31 00:00:19,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 901640040, now seen corresponding path program 2 times [2023-08-31 00:00:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:19,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484906286] [2023-08-31 00:00:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484906286] [2023-08-31 00:00:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484906286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133798868] [2023-08-31 00:00:21,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 00:00:21,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:21,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 00:00:21,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 00:00:21,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 00:00:21,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:00:21,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-31 00:00:21,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:21,971 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 00:00:21,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2023-08-31 00:00:22,604 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 00:00:22,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2023-08-31 00:00:22,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:00:22,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 00:00:22,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-31 00:00:22,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-08-31 00:00:22,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:00:22,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-08-31 00:00:22,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 00:00:22,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-08-31 00:00:23,019 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 [2023-08-31 00:00:23,025 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 [2023-08-31 00:00:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 00:00:23,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 00:00:23,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133798868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:00:23,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 00:00:23,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 18 [2023-08-31 00:00:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434014759] [2023-08-31 00:00:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:00:23,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 00:00:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:23,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 00:00:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-08-31 00:00:23,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-31 00:00:23,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 744.125) internal successors, (5953), 8 states have internal predecessors, (5953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:23,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:23,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-31 00:00:23,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:25,048 INFO L130 PetriNetUnfolder]: 189/427 cut-off events. [2023-08-31 00:00:25,048 INFO L131 PetriNetUnfolder]: For 423/423 co-relation queries the response was YES. [2023-08-31 00:00:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 427 events. 189/427 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1723 event pairs, 121 based on Foata normal form. 4/424 useless extension candidates. Maximal degree in co-relation 1256. Up to 316 conditions per place. [2023-08-31 00:00:25,051 INFO L137 encePairwiseOnDemand]: 1672/1683 looper letters, 48 selfloop transitions, 10 changer transitions 23/81 dead transitions. [2023-08-31 00:00:25,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 578 flow [2023-08-31 00:00:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 00:00:25,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 00:00:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4516 transitions. [2023-08-31 00:00:25,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472172707466825 [2023-08-31 00:00:25,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4516 transitions. [2023-08-31 00:00:25,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4516 transitions. [2023-08-31 00:00:25,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:25,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4516 transitions. [2023-08-31 00:00:25,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 752.6666666666666) internal successors, (4516), 6 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:25,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:25,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1683.0) internal successors, (11781), 7 states have internal predecessors, (11781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:25,092 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 367 flow. Second operand 6 states and 4516 transitions. [2023-08-31 00:00:25,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 578 flow [2023-08-31 00:00:25,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-31 00:00:25,097 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 313 flow [2023-08-31 00:00:25,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=82, PETRI_TRANSITIONS=56} [2023-08-31 00:00:25,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-08-31 00:00:25,098 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 313 flow [2023-08-31 00:00:25,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 744.125) internal successors, (5953), 8 states have internal predecessors, (5953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:25,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:25,099 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:25,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 00:00:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-31 00:00:25,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:00:25,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash 651318490, now seen corresponding path program 4 times [2023-08-31 00:00:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822664567] [2023-08-31 00:00:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822664567] [2023-08-31 00:00:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822664567] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558359289] [2023-08-31 00:00:26,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 00:00:26,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:26,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:26,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 00:00:26,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 00:00:28,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 00:00:28,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 00:00:28,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 00:00:28,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 00:00:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:28,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 00:00:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558359289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 00:00:28,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 00:00:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-08-31 00:00:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860781099] [2023-08-31 00:00:28,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 00:00:28,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 00:00:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:00:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 00:00:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=676, Unknown=0, NotChecked=0, Total=992 [2023-08-31 00:00:29,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 1683 [2023-08-31 00:00:29,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 56 transitions, 313 flow. Second operand has 32 states, 32 states have (on average 754.46875) internal successors, (24143), 32 states have internal predecessors, (24143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:29,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:00:29,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 1683 [2023-08-31 00:00:29,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:00:51,205 INFO L130 PetriNetUnfolder]: 45/140 cut-off events. [2023-08-31 00:00:51,206 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-08-31 00:00:51,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 140 events. 45/140 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 257 event pairs, 35 based on Foata normal form. 30/165 useless extension candidates. Maximal degree in co-relation 477. Up to 108 conditions per place. [2023-08-31 00:00:51,207 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 39 selfloop transitions, 35 changer transitions 0/74 dead transitions. [2023-08-31 00:00:51,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 74 transitions, 557 flow [2023-08-31 00:00:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-31 00:00:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-31 00:00:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 18182 transitions. [2023-08-31 00:00:51,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501386413151119 [2023-08-31 00:00:51,233 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 18182 transitions. [2023-08-31 00:00:51,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 18182 transitions. [2023-08-31 00:00:51,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:00:51,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 18182 transitions. [2023-08-31 00:00:51,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 757.5833333333334) internal successors, (18182), 24 states have internal predecessors, (18182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:51,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 1683.0) internal successors, (42075), 25 states have internal predecessors, (42075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:51,300 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 1683.0) internal successors, (42075), 25 states have internal predecessors, (42075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:51,300 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 313 flow. Second operand 24 states and 18182 transitions. [2023-08-31 00:00:51,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 74 transitions, 557 flow [2023-08-31 00:00:51,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 74 transitions, 515 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-31 00:00:51,304 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 559 flow [2023-08-31 00:00:51,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1683, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=559, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2023-08-31 00:00:51,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-08-31 00:00:51,305 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 559 flow [2023-08-31 00:00:51,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 754.46875) internal successors, (24143), 32 states have internal predecessors, (24143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 00:00:51,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:00:51,309 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:00:51,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 00:00:51,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-31 00:00:51,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:00:51,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:00:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1506263194, now seen corresponding path program 5 times [2023-08-31 00:00:51,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:00:51,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88369976] [2023-08-31 00:00:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:00:51,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:00:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:00:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:00:53,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:00:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88369976] [2023-08-31 00:00:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88369976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 00:00:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779953326] [2023-08-31 00:00:53,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 00:00:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 00:00:53,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:00:53,322 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 00:00:53,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process Killed by 15