./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:28:52,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:28:52,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:28:52,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:28:52,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:28:52,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:28:52,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:28:52,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:28:52,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:28:52,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:28:52,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:28:52,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:28:52,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:28:52,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:28:52,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:28:52,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:28:52,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:28:52,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:28:52,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:28:52,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:28:52,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:28:52,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:28:52,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:28:52,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:28:52,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:28:52,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:28:52,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:28:52,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:28:52,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:28:52,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:28:52,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:28:52,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:28:52,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:28:52,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:28:52,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:28:52,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:28:52,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:28:52,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:28:52,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:28:52,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:28:52,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:28:52,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:28:52,381 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:28:52,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:28:52,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:28:52,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:28:52,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:28:52,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:28:52,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:28:52,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:28:52,385 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:28:52,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:28:52,386 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:28:52,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:28:52,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:28:52,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:28:52,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:28:52,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:28:52,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:28:52,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:28:52,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:28:52,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:28:52,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:28:52,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:28:52,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:28:52,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:28:52,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:28:52,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:28:52,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:28:52,390 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:28:52,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:28:52,390 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:28:52,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 200a1054abe3180675ad7323ac963ef4172b7cd0baaabe20a569e3117ba88111 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:28:52,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:28:52,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:28:52,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:28:52,695 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:28:52,695 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:28:52,696 INFO L432 ainManager$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 17:28:53,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:28:54,314 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:28:54,315 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 17:28:54,355 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed00d2ad5/8d1b8c32189f42158a4cc5af2f135a1e/FLAG419fb666b [2023-08-30 17:28:54,371 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed00d2ad5/8d1b8c32189f42158a4cc5af2f135a1e [2023-08-30 17:28:54,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:28:54,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:28:54,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:28:54,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:28:54,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:28:54,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:28:54" (1/1) ... [2023-08-30 17:28:54,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3511951d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:54, skipping insertion in model container [2023-08-30 17:28:54,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:28:54" (1/1) ... [2023-08-30 17:28:54,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:28:54,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:28:54,732 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 17:28:57,012 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:28:57,472 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:28:57,476 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:28:57,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:28:57,559 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:28:57,586 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 17:28:57,756 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:28:57,804 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:28:57,805 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:28:57,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:28:58,467 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,468 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:28:58,474 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:28:58,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58 WrapperNode [2023-08-30 17:28:58,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:28:58,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:28:58,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:28:58,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:28:58,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,694 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 56, statements flattened = 737 [2023-08-30 17:28:58,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:28:58,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:28:58,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:28:58,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:28:58,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:28:58,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:28:58,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:28:58,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:28:58,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (1/1) ... [2023-08-30 17:28:58,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:28:58,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:28:58,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 17:28:58,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 17:28:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:28:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:28:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:28:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:28:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:28:58,872 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:28:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:28:58,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:28:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 17:28:58,872 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 17:28:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:28:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:28:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:28:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:28:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:28:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:28:58,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:28:58,876 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:28:59,399 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:28:59,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:29:00,175 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:29:00,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:29:00,191 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 17:29:00,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:00 BoogieIcfgContainer [2023-08-30 17:29:00,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:29:00,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:29:00,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:29:00,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:29:00,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:28:54" (1/3) ... [2023-08-30 17:29:00,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615b3b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:00, skipping insertion in model container [2023-08-30 17:29:00,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:58" (2/3) ... [2023-08-30 17:29:00,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615b3b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:29:00, skipping insertion in model container [2023-08-30 17:29:00,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:29:00" (3/3) ... [2023-08-30 17:29:00,201 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_change.i [2023-08-30 17:29:00,208 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:29:00,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:29:00,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 17:29:00,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:29:00,352 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:29:00,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 756 places, 805 transitions, 1626 flow [2023-08-30 17:29:00,639 INFO L130 PetriNetUnfolder]: 56/803 cut-off events. [2023-08-30 17:29:00,640 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:29:00,647 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 17:29:00,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 756 places, 805 transitions, 1626 flow [2023-08-30 17:29:00,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 746 places, 795 transitions, 1599 flow [2023-08-30 17:29:00,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:29:00,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 746 places, 795 transitions, 1599 flow [2023-08-30 17:29:00,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 746 places, 795 transitions, 1599 flow [2023-08-30 17:29:00,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 746 places, 795 transitions, 1599 flow [2023-08-30 17:29:00,788 INFO L130 PetriNetUnfolder]: 56/795 cut-off events. [2023-08-30 17:29:00,788 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:29:00,791 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 17:29:00,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 17334 [2023-08-30 17:30:30,346 WARN L222 SmtUtils]: Spent 13.97s 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 17:30:37,108 WARN L222 SmtUtils]: Spent 6.76s 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 17:30:51,202 WARN L222 SmtUtils]: Spent 14.09s 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 17:30:57,809 WARN L222 SmtUtils]: Spent 6.61s 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 17:33:18,901 WARN L222 SmtUtils]: Spent 2.26m 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 17:34:22,024 WARN L222 SmtUtils]: Spent 1.05m 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 17:35:23,548 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 17:35:48,317 WARN L222 SmtUtils]: Spent 24.75s 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 17:35:55,114 INFO L134 LiptonReduction]: Checked pairs total: 16655 [2023-08-30 17:35:55,115 INFO L136 LiptonReduction]: Total number of compositions: 878 [2023-08-30 17:35:55,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:35:55,138 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;@5d3eb8e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:35:55,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 17:35:55,148 INFO L130 PetriNetUnfolder]: 4/8 cut-off events. [2023-08-30 17:35:55,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:35:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:35:55,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 17:35:55,150 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 17:35:55,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:35:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2965003, now seen corresponding path program 1 times [2023-08-30 17:35:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:35:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577906172] [2023-08-30 17:35:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:35:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:35:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:35:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:35:55,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:35:55,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577906172] [2023-08-30 17:35:55,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577906172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:35:55,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:35:55,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:35:55,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189157425] [2023-08-30 17:35:55,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:35:55,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:35:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:35:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:35:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:35:55,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 765 out of 1683 [2023-08-30 17:35:55,733 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 17:35:55,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:35:55,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 765 of 1683 [2023-08-30 17:35:55,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:35:56,300 INFO L130 PetriNetUnfolder]: 223/415 cut-off events. [2023-08-30 17:35:56,301 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 17:35:56,301 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 17:35:56,304 INFO L137 encePairwiseOnDemand]: 1668/1683 looper letters, 44 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2023-08-30 17:35:56,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 185 flow [2023-08-30 17:35:56,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:35:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:35:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1589 transitions. [2023-08-30 17:35:56,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720736779560309 [2023-08-30 17:35:56,323 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1589 transitions. [2023-08-30 17:35:56,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1589 transitions. [2023-08-30 17:35:56,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:35:56,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1589 transitions. [2023-08-30 17:35:56,335 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 17:35:56,344 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 17:35:56,347 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 17:35:56,348 INFO L175 Difference]: Start difference. First operand has 42 places, 59 transitions, 127 flow. Second operand 2 states and 1589 transitions. [2023-08-30 17:35:56,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 185 flow [2023-08-30 17:35:56,351 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 17:35:56,353 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 92 flow [2023-08-30 17:35:56,354 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 17:35:56,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-30 17:35:56,357 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 92 flow [2023-08-30 17:35:56,358 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 17:35:56,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:35:56,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:35:56,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:35:56,359 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 17:35:56,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:35:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1838204332, now seen corresponding path program 1 times [2023-08-30 17:35:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:35:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43164826] [2023-08-30 17:35:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:35:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:35:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:35:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:35:57,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:35:57,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43164826] [2023-08-30 17:35:57,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43164826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:35:57,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:35:57,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:35:57,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672923072] [2023-08-30 17:35:57,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:35:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:35:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:35:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:35:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:35:57,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 1683 [2023-08-30 17:35:57,134 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 17:35:57,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:35:57,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 1683 [2023-08-30 17:35:57,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:35:57,743 INFO L130 PetriNetUnfolder]: 324/614 cut-off events. [2023-08-30 17:35:57,743 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 17:35:57,744 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 17:35:57,746 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 57 selfloop transitions, 4 changer transitions 1/62 dead transitions. [2023-08-30 17:35:57,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 255 flow [2023-08-30 17:35:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:35:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:35:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2304 transitions. [2023-08-30 17:35:57,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563279857397504 [2023-08-30 17:35:57,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2304 transitions. [2023-08-30 17:35:57,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2304 transitions. [2023-08-30 17:35:57,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:35:57,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2304 transitions. [2023-08-30 17:35:57,759 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 17:35:57,768 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 17:35:57,771 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 17:35:57,771 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 92 flow. Second operand 3 states and 2304 transitions. [2023-08-30 17:35:57,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 255 flow [2023-08-30 17:35:57,772 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 17:35:57,773 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 122 flow [2023-08-30 17:35:57,774 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 17:35:57,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 17:35:57,775 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 122 flow [2023-08-30 17:35:57,776 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 17:35:57,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:35:57,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:35:57,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:35:57,778 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 17:35:57,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:35:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1149757591, now seen corresponding path program 1 times [2023-08-30 17:35:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:35:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141327939] [2023-08-30 17:35:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:35:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:35:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:35:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:35:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:35:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141327939] [2023-08-30 17:35:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141327939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:35:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:35:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:35:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022838697] [2023-08-30 17:35:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:35:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:35:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:35:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:35:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:35:58,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-30 17:35:58,992 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 17:35:58,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:35:58,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-30 17:35:58,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:00,092 INFO L130 PetriNetUnfolder]: 296/567 cut-off events. [2023-08-30 17:36:00,093 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2023-08-30 17:36:00,094 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 17:36:00,096 INFO L137 encePairwiseOnDemand]: 1670/1683 looper letters, 63 selfloop transitions, 13 changer transitions 2/78 dead transitions. [2023-08-30 17:36:00,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 355 flow [2023-08-30 17:36:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4529 transitions. [2023-08-30 17:36:00,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485046543870073 [2023-08-30 17:36:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4529 transitions. [2023-08-30 17:36:00,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4529 transitions. [2023-08-30 17:36:00,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:00,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4529 transitions. [2023-08-30 17:36:00,117 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 17:36:00,133 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 17:36:00,139 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 17:36:00,139 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 122 flow. Second operand 6 states and 4529 transitions. [2023-08-30 17:36:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 355 flow [2023-08-30 17:36:00,142 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 17:36:00,143 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 163 flow [2023-08-30 17:36:00,143 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 17:36:00,144 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 17:36:00,144 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 163 flow [2023-08-30 17:36:00,146 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 17:36:00,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:00,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:00,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:36:00,147 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 17:36:00,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1154154743, now seen corresponding path program 1 times [2023-08-30 17:36:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815643509] [2023-08-30 17:36:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:00,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815643509] [2023-08-30 17:36:00,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815643509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:00,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:36:00,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:36:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845819563] [2023-08-30 17:36:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:00,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:36:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:36:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:36:00,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 1683 [2023-08-30 17:36:00,851 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 17:36:00,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:00,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 1683 [2023-08-30 17:36:00,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:01,586 INFO L130 PetriNetUnfolder]: 296/568 cut-off events. [2023-08-30 17:36:01,586 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2023-08-30 17:36:01,587 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 17:36:01,589 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 48 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 17:36:01,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 265 flow [2023-08-30 17:36:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:36:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:36:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2312 transitions. [2023-08-30 17:36:01,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2023-08-30 17:36:01,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2312 transitions. [2023-08-30 17:36:01,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2312 transitions. [2023-08-30 17:36:01,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:01,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2312 transitions. [2023-08-30 17:36:01,601 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 17:36:01,608 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 17:36:01,609 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 17:36:01,609 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 163 flow. Second operand 3 states and 2312 transitions. [2023-08-30 17:36:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 265 flow [2023-08-30 17:36:01,611 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 17:36:01,612 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 160 flow [2023-08-30 17:36:01,612 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 17:36:01,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-30 17:36:01,613 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 160 flow [2023-08-30 17:36:01,614 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 17:36:01,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:01,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:36:01,615 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 17:36:01,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 849000484, now seen corresponding path program 1 times [2023-08-30 17:36:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342991300] [2023-08-30 17:36:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342991300] [2023-08-30 17:36:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342991300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114113907] [2023-08-30 17:36:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:02,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:02,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:36:02,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:36:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:02,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 17:36:02,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:02,809 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 17:36:02,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114113907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:02,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:02,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 17:36:02,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503478734] [2023-08-30 17:36:02,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:02,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:36:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:02,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:36:02,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:36:02,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 1683 [2023-08-30 17:36:02,911 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 17:36:02,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:02,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 1683 [2023-08-30 17:36:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:03,403 INFO L130 PetriNetUnfolder]: 344/660 cut-off events. [2023-08-30 17:36:03,403 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2023-08-30 17:36:03,404 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 17:36:03,407 INFO L137 encePairwiseOnDemand]: 1679/1683 looper letters, 60 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-08-30 17:36:03,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 341 flow [2023-08-30 17:36:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:36:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:36:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2297 transitions. [2023-08-30 17:36:03,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45494157258863144 [2023-08-30 17:36:03,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2297 transitions. [2023-08-30 17:36:03,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2297 transitions. [2023-08-30 17:36:03,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:03,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2297 transitions. [2023-08-30 17:36:03,418 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 17:36:03,424 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 17:36:03,425 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 17:36:03,425 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 160 flow. Second operand 3 states and 2297 transitions. [2023-08-30 17:36:03,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 341 flow [2023-08-30 17:36:03,430 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 17:36:03,431 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 193 flow [2023-08-30 17:36:03,432 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 17:36:03,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-30 17:36:03,433 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 193 flow [2023-08-30 17:36:03,434 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 17:36:03,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:03,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:03,448 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 17:36:03,643 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 17:36:03,644 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 17:36:03,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -185362531, now seen corresponding path program 1 times [2023-08-30 17:36:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518077359] [2023-08-30 17:36:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518077359] [2023-08-30 17:36:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518077359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333458277] [2023-08-30 17:36:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:04,273 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 17:36:04,276 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 17:36:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:04,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 17:36:04,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:04,987 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 17:36:04,988 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 17:36:05,056 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 17:36:05,069 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 17:36:05,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333458277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:05,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:05,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 17:36:05,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4148958] [2023-08-30 17:36:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:05,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:36:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:36:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:36:05,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-30 17:36:05,302 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 17:36:05,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:05,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-30 17:36:05,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:06,346 INFO L130 PetriNetUnfolder]: 335/643 cut-off events. [2023-08-30 17:36:06,346 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-08-30 17:36:06,347 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 17:36:06,350 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 61 selfloop transitions, 10 changer transitions 1/72 dead transitions. [2023-08-30 17:36:06,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 398 flow [2023-08-30 17:36:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4517 transitions. [2023-08-30 17:36:06,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473163002574767 [2023-08-30 17:36:06,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4517 transitions. [2023-08-30 17:36:06,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4517 transitions. [2023-08-30 17:36:06,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:06,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4517 transitions. [2023-08-30 17:36:06,370 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 17:36:06,382 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 17:36:06,383 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 17:36:06,384 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 193 flow. Second operand 6 states and 4517 transitions. [2023-08-30 17:36:06,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 398 flow [2023-08-30 17:36:06,386 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 17:36:06,388 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 220 flow [2023-08-30 17:36:06,388 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 17:36:06,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 17:36:06,390 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 220 flow [2023-08-30 17:36:06,391 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 17:36:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:06,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:06,408 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 17:36:06,601 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 17:36:06,602 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 17:36:06,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1114404398, now seen corresponding path program 1 times [2023-08-30 17:36:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:06,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475717491] [2023-08-30 17:36:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475717491] [2023-08-30 17:36:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475717491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676270820] [2023-08-30 17:36:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:07,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:07,529 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 17:36:07,550 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 17:36:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:08,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 17:36:08,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:08,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:36:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676270820] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:36:09,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:36:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 17:36:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814253070] [2023-08-30 17:36:09,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:36:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:36:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:09,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:36:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:36:09,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 751 out of 1683 [2023-08-30 17:36:09,260 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 17:36:09,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:09,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 751 of 1683 [2023-08-30 17:36:09,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:09,856 INFO L130 PetriNetUnfolder]: 335/648 cut-off events. [2023-08-30 17:36:09,856 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2023-08-30 17:36:09,857 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 17:36:09,859 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 51 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-30 17:36:09,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 354 flow [2023-08-30 17:36:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4565 transitions. [2023-08-30 17:36:09,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45206971677559915 [2023-08-30 17:36:09,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4565 transitions. [2023-08-30 17:36:09,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4565 transitions. [2023-08-30 17:36:09,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:09,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4565 transitions. [2023-08-30 17:36:09,878 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 17:36:09,891 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 17:36:09,893 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 17:36:09,893 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 220 flow. Second operand 6 states and 4565 transitions. [2023-08-30 17:36:09,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 354 flow [2023-08-30 17:36:09,896 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 17:36:09,897 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 281 flow [2023-08-30 17:36:09,897 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 17:36:09,898 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-30 17:36:09,898 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 281 flow [2023-08-30 17:36:09,899 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 17:36:09,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:09,899 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:09,915 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 17:36:10,110 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 17:36:10,110 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 17:36:10,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash 781361293, now seen corresponding path program 2 times [2023-08-30 17:36:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158626809] [2023-08-30 17:36:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:10,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:11,251 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 17:36:11,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158626809] [2023-08-30 17:36:11,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158626809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044230870] [2023-08-30 17:36:11,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:36:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:11,263 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 17:36:11,264 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 17:36:12,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:36:12,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:36:12,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 17:36:12,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:12,891 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 17:36:12,925 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 17:36:12,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:12,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044230870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:12,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:12,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 17:36:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488618316] [2023-08-30 17:36:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:36:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:36:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:36:13,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 1683 [2023-08-30 17:36:13,092 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 17:36:13,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:13,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 1683 [2023-08-30 17:36:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:13,777 INFO L130 PetriNetUnfolder]: 323/634 cut-off events. [2023-08-30 17:36:13,777 INFO L131 PetriNetUnfolder]: For 656/656 co-relation queries the response was YES. [2023-08-30 17:36:13,778 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 17:36:13,779 INFO L137 encePairwiseOnDemand]: 1677/1683 looper letters, 54 selfloop transitions, 9 changer transitions 11/74 dead transitions. [2023-08-30 17:36:13,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 491 flow [2023-08-30 17:36:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:36:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:36:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3035 transitions. [2023-08-30 17:36:13,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45083184789067143 [2023-08-30 17:36:13,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3035 transitions. [2023-08-30 17:36:13,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3035 transitions. [2023-08-30 17:36:13,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:13,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3035 transitions. [2023-08-30 17:36:13,792 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 17:36:13,798 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 17:36:13,800 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 17:36:13,800 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 281 flow. Second operand 4 states and 3035 transitions. [2023-08-30 17:36:13,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 491 flow [2023-08-30 17:36:13,802 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 17:36:13,803 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 295 flow [2023-08-30 17:36:13,804 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 17:36:13,806 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-30 17:36:13,806 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 295 flow [2023-08-30 17:36:13,807 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 17:36:13,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:13,807 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 17:36:13,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:14,018 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 17:36:14,018 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 17:36:14,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1766874052, now seen corresponding path program 1 times [2023-08-30 17:36:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:14,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151474902] [2023-08-30 17:36:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:14,850 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 17:36:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:14,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151474902] [2023-08-30 17:36:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151474902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219863863] [2023-08-30 17:36:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:14,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:14,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:14,852 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) [2023-08-30 17:36:14,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 17:36:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:15,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-30 17:36:15,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:15,586 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 17:36:15,587 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 17:36:16,007 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 [2023-08-30 17:36:16,014 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 [2023-08-30 17:36:16,353 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 17:36:16,361 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 17:36:16,380 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 17:36:16,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:16,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219863863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:16,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:16,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-30 17:36:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259456647] [2023-08-30 17:36:16,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:16,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:36:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:36:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-30 17:36:16,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 745 out of 1683 [2023-08-30 17:36:16,655 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) [2023-08-30 17:36:16,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:16,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 745 of 1683 [2023-08-30 17:36:16,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:18,257 INFO L130 PetriNetUnfolder]: 302/617 cut-off events. [2023-08-30 17:36:18,257 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-08-30 17:36:18,259 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. [2023-08-30 17:36:18,260 INFO L137 encePairwiseOnDemand]: 1678/1683 looper letters, 59 selfloop transitions, 6 changer transitions 16/81 dead transitions. [2023-08-30 17:36:18,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 526 flow [2023-08-30 17:36:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 17:36:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 17:36:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3796 transitions. [2023-08-30 17:36:18,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510992275698158 [2023-08-30 17:36:18,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3796 transitions. [2023-08-30 17:36:18,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3796 transitions. [2023-08-30 17:36:18,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:18,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3796 transitions. [2023-08-30 17:36:18,276 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) [2023-08-30 17:36:18,283 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) [2023-08-30 17:36:18,285 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) [2023-08-30 17:36:18,285 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 295 flow. Second operand 5 states and 3796 transitions. [2023-08-30 17:36:18,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 526 flow [2023-08-30 17:36:18,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 484 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 17:36:18,289 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 250 flow [2023-08-30 17:36:18,289 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} [2023-08-30 17:36:18,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 17:36:18,290 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 250 flow [2023-08-30 17:36:18,291 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) [2023-08-30 17:36:18,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:18,291 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 17:36:18,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:18,501 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 [2023-08-30 17:36:18,501 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)] === [2023-08-30 17:36:18,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:18,502 INFO L85 PathProgramCache]: Analyzing trace with hash -730774836, now seen corresponding path program 1 times [2023-08-30 17:36:18,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65224284] [2023-08-30 17:36:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:19,652 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 17:36:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65224284] [2023-08-30 17:36:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65224284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710780553] [2023-08-30 17:36:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:19,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:19,657 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) [2023-08-30 17:36:19,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 17:36:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 17:36:20,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:21,407 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 17:36:21,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:36:21,658 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 17:36:21,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710780553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:36:21,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:36:21,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 17:36:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3809860] [2023-08-30 17:36:21,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:36:21,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 17:36:21,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:21,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 17:36:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-08-30 17:36:21,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 1683 [2023-08-30 17:36:21,914 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) [2023-08-30 17:36:21,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:21,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 1683 [2023-08-30 17:36:21,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:23,547 INFO L130 PetriNetUnfolder]: 211/463 cut-off events. [2023-08-30 17:36:23,547 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2023-08-30 17:36:23,548 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. [2023-08-30 17:36:23,549 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 47 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2023-08-30 17:36:23,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 426 flow [2023-08-30 17:36:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:36:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:36:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9112 transitions. [2023-08-30 17:36:23,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2023-08-30 17:36:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9112 transitions. [2023-08-30 17:36:23,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9112 transitions. [2023-08-30 17:36:23,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:23,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9112 transitions. [2023-08-30 17:36:23,579 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) [2023-08-30 17:36:23,598 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) [2023-08-30 17:36:23,600 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) [2023-08-30 17:36:23,600 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 250 flow. Second operand 12 states and 9112 transitions. [2023-08-30 17:36:23,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 426 flow [2023-08-30 17:36:23,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 404 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 17:36:23,603 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 372 flow [2023-08-30 17:36:23,604 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} [2023-08-30 17:36:23,605 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2023-08-30 17:36:23,605 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 372 flow [2023-08-30 17:36:23,608 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) [2023-08-30 17:36:23,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:23,608 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:23,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:23,827 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 [2023-08-30 17:36:23,828 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)] === [2023-08-30 17:36:23,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 638604460, now seen corresponding path program 2 times [2023-08-30 17:36:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384555467] [2023-08-30 17:36:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384555467] [2023-08-30 17:36:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384555467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931294673] [2023-08-30 17:36:25,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:36:25,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:25,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:25,283 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) [2023-08-30 17:36:25,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 17:36:26,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:36:26,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:36:26,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-30 17:36:26,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:26,357 INFO L321 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2023-08-30 17:36:26,357 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 [2023-08-30 17:36:26,956 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 17:36:27,087 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 17:36:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 17:36:27,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931294673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 17:36:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599254575] [2023-08-30 17:36:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:36:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:36:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-08-30 17:36:27,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 740 out of 1683 [2023-08-30 17:36:27,595 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) [2023-08-30 17:36:27,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:27,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 740 of 1683 [2023-08-30 17:36:27,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:28,723 INFO L130 PetriNetUnfolder]: 225/497 cut-off events. [2023-08-30 17:36:28,723 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-08-30 17:36:28,725 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. [2023-08-30 17:36:28,726 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 59 selfloop transitions, 7 changer transitions 17/83 dead transitions. [2023-08-30 17:36:28,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 593 flow [2023-08-30 17:36:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4504 transitions. [2023-08-30 17:36:28,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44602891661715194 [2023-08-30 17:36:28,733 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4504 transitions. [2023-08-30 17:36:28,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4504 transitions. [2023-08-30 17:36:28,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:28,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4504 transitions. [2023-08-30 17:36:28,740 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) [2023-08-30 17:36:28,748 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 17:36:28,749 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 17:36:28,749 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 372 flow. Second operand 6 states and 4504 transitions. [2023-08-30 17:36:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 593 flow [2023-08-30 17:36:28,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 553 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 17:36:28,753 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 346 flow [2023-08-30 17:36:28,753 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} [2023-08-30 17:36:28,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-30 17:36:28,753 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 346 flow [2023-08-30 17:36:28,754 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) [2023-08-30 17:36:28,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:28,754 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:28,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:28,966 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 [2023-08-30 17:36:28,966 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)] === [2023-08-30 17:36:28,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash 81689220, now seen corresponding path program 3 times [2023-08-30 17:36:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735660427] [2023-08-30 17:36:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735660427] [2023-08-30 17:36:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735660427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798075145] [2023-08-30 17:36:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 17:36:30,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:30,072 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) [2023-08-30 17:36:30,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 17:36:31,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 17:36:31,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:36:31,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 17:36:31,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:31,062 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 17:36:31,063 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 17:36:31,631 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 17:36:31,689 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 17:36:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 17:36:31,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:31,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798075145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:31,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:31,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-08-30 17:36:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358822971] [2023-08-30 17:36:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:31,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:36:31,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:36:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-30 17:36:32,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 740 out of 1683 [2023-08-30 17:36:32,135 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) [2023-08-30 17:36:32,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:32,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 740 of 1683 [2023-08-30 17:36:32,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:33,198 INFO L130 PetriNetUnfolder]: 221/493 cut-off events. [2023-08-30 17:36:33,198 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-08-30 17:36:33,199 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. [2023-08-30 17:36:33,200 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 66 selfloop transitions, 7 changer transitions 14/87 dead transitions. [2023-08-30 17:36:33,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 616 flow [2023-08-30 17:36:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4509 transitions. [2023-08-30 17:36:33,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446524064171123 [2023-08-30 17:36:33,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4509 transitions. [2023-08-30 17:36:33,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4509 transitions. [2023-08-30 17:36:33,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:33,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4509 transitions. [2023-08-30 17:36:33,214 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) [2023-08-30 17:36:33,222 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 17:36:33,223 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 17:36:33,223 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 346 flow. Second operand 6 states and 4509 transitions. [2023-08-30 17:36:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 616 flow [2023-08-30 17:36:33,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 578 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 17:36:33,227 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 367 flow [2023-08-30 17:36:33,227 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} [2023-08-30 17:36:33,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-30 17:36:33,227 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 367 flow [2023-08-30 17:36:33,228 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) [2023-08-30 17:36:33,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:33,228 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:33,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:33,440 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 [2023-08-30 17:36:33,440 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)] === [2023-08-30 17:36:33,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash 901640040, now seen corresponding path program 2 times [2023-08-30 17:36:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:33,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693472193] [2023-08-30 17:36:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693472193] [2023-08-30 17:36:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693472193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723188463] [2023-08-30 17:36:34,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:36:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:34,474 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) [2023-08-30 17:36:34,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 17:36:35,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:36:35,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:36:35,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-30 17:36:35,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:35,354 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 17:36:35,354 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 [2023-08-30 17:36:35,947 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 17:36:35,947 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 [2023-08-30 17:36:35,954 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 [2023-08-30 17:36:35,962 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 [2023-08-30 17:36:36,077 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 [2023-08-30 17:36:36,083 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 [2023-08-30 17:36:36,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:36:36,128 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 [2023-08-30 17:36:36,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:36:36,133 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 [2023-08-30 17:36:36,356 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 17:36:36,362 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 17:36:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 17:36:36,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:36:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723188463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:36:36,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:36:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 18 [2023-08-30 17:36:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888032664] [2023-08-30 17:36:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:36:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:36:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:36:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-08-30 17:36:36,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1683 [2023-08-30 17:36:36,897 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) [2023-08-30 17:36:36,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:36,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1683 [2023-08-30 17:36:36,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:36:38,229 INFO L130 PetriNetUnfolder]: 189/427 cut-off events. [2023-08-30 17:36:38,229 INFO L131 PetriNetUnfolder]: For 423/423 co-relation queries the response was YES. [2023-08-30 17:36:38,230 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. [2023-08-30 17:36:38,231 INFO L137 encePairwiseOnDemand]: 1672/1683 looper letters, 48 selfloop transitions, 10 changer transitions 23/81 dead transitions. [2023-08-30 17:36:38,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 578 flow [2023-08-30 17:36:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:36:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:36:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4516 transitions. [2023-08-30 17:36:38,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472172707466825 [2023-08-30 17:36:38,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4516 transitions. [2023-08-30 17:36:38,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4516 transitions. [2023-08-30 17:36:38,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:36:38,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4516 transitions. [2023-08-30 17:36:38,245 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) [2023-08-30 17:36:38,251 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 17:36:38,252 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 17:36:38,252 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 367 flow. Second operand 6 states and 4516 transitions. [2023-08-30 17:36:38,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 578 flow [2023-08-30 17:36:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 571 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 17:36:38,256 INFO L231 Difference]: Finished difference. Result has 82 places, 56 transitions, 313 flow [2023-08-30 17:36:38,257 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} [2023-08-30 17:36:38,257 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-08-30 17:36:38,258 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 56 transitions, 313 flow [2023-08-30 17:36:38,259 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) [2023-08-30 17:36:38,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:36:38,259 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:36:38,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 17:36:38,469 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 [2023-08-30 17:36:38,470 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)] === [2023-08-30 17:36:38,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:36:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash 651318490, now seen corresponding path program 4 times [2023-08-30 17:36:38,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:36:38,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988427485] [2023-08-30 17:36:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:36:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:36:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:36:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:39,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:36:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988427485] [2023-08-30 17:36:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988427485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:36:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275861662] [2023-08-30 17:36:39,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 17:36:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:36:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:36:39,557 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) [2023-08-30 17:36:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 17:36:40,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 17:36:40,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:36:40,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 17:36:40,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:36:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:41,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:36:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:36:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275861662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:36:41,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:36:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2023-08-30 17:36:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686703321] [2023-08-30 17:36:41,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:36:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 17:36:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:36:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 17:36:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=676, Unknown=0, NotChecked=0, Total=992 [2023-08-30 17:36:42,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 1683 [2023-08-30 17:36:42,705 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) [2023-08-30 17:36:42,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:36:42,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 1683 [2023-08-30 17:36:42,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:37:03,273 INFO L130 PetriNetUnfolder]: 45/140 cut-off events. [2023-08-30 17:37:03,273 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-08-30 17:37:03,273 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. [2023-08-30 17:37:03,274 INFO L137 encePairwiseOnDemand]: 1675/1683 looper letters, 39 selfloop transitions, 35 changer transitions 0/74 dead transitions. [2023-08-30 17:37:03,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 74 transitions, 557 flow [2023-08-30 17:37:03,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 17:37:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 17:37:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 18182 transitions. [2023-08-30 17:37:03,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501386413151119 [2023-08-30 17:37:03,300 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 18182 transitions. [2023-08-30 17:37:03,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 18182 transitions. [2023-08-30 17:37:03,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:37:03,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 18182 transitions. [2023-08-30 17:37:03,327 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) [2023-08-30 17:37:03,359 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) [2023-08-30 17:37:03,363 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) [2023-08-30 17:37:03,364 INFO L175 Difference]: Start difference. First operand has 82 places, 56 transitions, 313 flow. Second operand 24 states and 18182 transitions. [2023-08-30 17:37:03,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 74 transitions, 557 flow [2023-08-30 17:37:03,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 74 transitions, 515 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-30 17:37:03,368 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 559 flow [2023-08-30 17:37:03,368 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} [2023-08-30 17:37:03,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-08-30 17:37:03,369 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 559 flow [2023-08-30 17:37:03,371 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) [2023-08-30 17:37:03,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:37:03,372 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:37:03,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 17:37:03,589 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 [2023-08-30 17:37:03,589 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)] === [2023-08-30 17:37:03,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:37:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1506263194, now seen corresponding path program 5 times [2023-08-30 17:37:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:37:03,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315604127] [2023-08-30 17:37:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:37:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:37:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:37:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:37:05,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:37:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315604127] [2023-08-30 17:37:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315604127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:37:05,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413030361] [2023-08-30 17:37:05,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 17:37:05,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:37:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:37:05,145 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) [2023-08-30 17:37:05,149 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