./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_set.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_set.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 ed9526537bcdfa3a373273dd87f938e4c25e1fe3854b24ed96c7c81db808c7a7 --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 17:37:42,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:37:42,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:37:42,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:37:42,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:37:42,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:37:42,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:37:42,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:37:42,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:37:42,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:37:42,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:37:42,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:37:42,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:37:42,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:37:42,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:37:42,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:37:42,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:37:42,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:37:42,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:37:42,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:37:42,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:37:42,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:37:42,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:37:42,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:37:42,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:37:42,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:37:42,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:37:42,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:37:42,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:37:42,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:37:42,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:37:42,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:37:42,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:37:42,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:37:42,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:37:42,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:37:42,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:37:42,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:37:42,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:37:42,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:37:42,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:37:42,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:37:42,300 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:37:42,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:37:42,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:37:42,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:37:42,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:37:42,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:37:42,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:37:42,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:37:42,302 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:37:42,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:37:42,303 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:37:42,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:37:42,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:37:42,305 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:37:42,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:37:42,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:37:42,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:37:42,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:37:42,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:37:42,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:37:42,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:37:42,307 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:37:42,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:37:42,307 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:37:42,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed9526537bcdfa3a373273dd87f938e4c25e1fe3854b24ed96c7c81db808c7a7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:37:42,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:37:42,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:37:42,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:37:42,558 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:37:42,559 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:37:42,560 INFO L432 ainManager$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_set.i [2023-08-30 17:37:43,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:37:43,902 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:37:43,902 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i [2023-08-30 17:37:43,944 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408111d6e/4fdb26189cd040adba08def8b15fdf33/FLAG261f9f955 [2023-08-30 17:37:43,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408111d6e/4fdb26189cd040adba08def8b15fdf33 [2023-08-30 17:37:43,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:37:43,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:37:43,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:37:43,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:37:43,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:37:43,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:37:43" (1/1) ... [2023-08-30 17:37:43,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580f8a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:43, skipping insertion in model container [2023-08-30 17:37:43,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:37:43" (1/1) ... [2023-08-30 17:37:43,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:37:44,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:37:44,298 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_set.i[5469,5482] [2023-08-30 17:37:46,098 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:37:46,443 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:37:46,447 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:37:46,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:37:46,515 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:37:46,538 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_set.i[5469,5482] [2023-08-30 17:37:46,693 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:37:46,732 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:37:46,733 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:37:46,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:37:47,238 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,239 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:37:47,244 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:37:47,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47 WrapperNode [2023-08-30 17:37:47,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:37:47,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:37:47,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:37:47,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:37:47,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,347 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 53, statements flattened = 708 [2023-08-30 17:37:47,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:37:47,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:37:47,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:37:47,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:37:47,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:37:47,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:37:47,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:37:47,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:37:47,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (1/1) ... [2023-08-30 17:37:47,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:37:47,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:37:47,448 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 17:37:47,453 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 17:37:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:37:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:37:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:37:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:37:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:37:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:37:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 17:37:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_open [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:37:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:37:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_set [2023-08-30 17:37:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:37:47,491 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 17:37:47,907 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:37:47,908 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:37:48,481 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:37:48,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:37:48,488 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 17:37:48,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:37:48 BoogieIcfgContainer [2023-08-30 17:37:48,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:37:48,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:37:48,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:37:48,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:37:48,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:37:43" (1/3) ... [2023-08-30 17:37:48,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320391b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:37:48, skipping insertion in model container [2023-08-30 17:37:48,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:37:47" (2/3) ... [2023-08-30 17:37:48,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320391b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:37:48, skipping insertion in model container [2023-08-30 17:37:48,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:37:48" (3/3) ... [2023-08-30 17:37:48,495 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_open_pc8736x_gpio_set.i [2023-08-30 17:37:48,500 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:37:48,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:37:48,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 17:37:48,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:37:48,598 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:37:48,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 771 transitions, 1558 flow [2023-08-30 17:37:48,822 INFO L130 PetriNetUnfolder]: 54/769 cut-off events. [2023-08-30 17:37:48,823 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:37:48,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 769 events. 54/769 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1093 event pairs, 0 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:37:48,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 724 places, 771 transitions, 1558 flow [2023-08-30 17:37:48,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 714 places, 761 transitions, 1531 flow [2023-08-30 17:37:48,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:37:48,842 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 714 places, 761 transitions, 1531 flow [2023-08-30 17:37:48,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 714 places, 761 transitions, 1531 flow [2023-08-30 17:37:48,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 714 places, 761 transitions, 1531 flow [2023-08-30 17:37:48,947 INFO L130 PetriNetUnfolder]: 54/761 cut-off events. [2023-08-30 17:37:48,948 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:37:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 761 events. 54/761 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1043 event pairs, 0 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 705. Up to 9 conditions per place. [2023-08-30 17:37:48,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 13812 [2023-08-30 17:38:40,986 WARN L222 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 336 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:38:51,210 WARN L222 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 336 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:39:43,031 WARN L222 SmtUtils]: Spent 44.93s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:40:28,602 WARN L222 SmtUtils]: Spent 45.57s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:41:12,841 WARN L222 SmtUtils]: Spent 44.24s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:41:56,291 WARN L222 SmtUtils]: Spent 43.45s on a formula simplification that was a NOOP. DAG size: 534 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:43:46,531 WARN L222 SmtUtils]: Spent 1.60m on a formula simplification. DAG size of input: 590 DAG size of output: 585 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:44:35,449 WARN L222 SmtUtils]: Spent 48.90s 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 17:46:34,280 WARN L222 SmtUtils]: Spent 1.98m on a formula simplification. DAG size of input: 596 DAG size of output: 589 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:47:03,486 WARN L222 SmtUtils]: Spent 29.20s 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 17:47:12,731 INFO L134 LiptonReduction]: Checked pairs total: 13470 [2023-08-30 17:47:12,731 INFO L136 LiptonReduction]: Total number of compositions: 845 [2023-08-30 17:47:12,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:47:12,744 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;@251f8379, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:47:12,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 17:47:12,750 INFO L130 PetriNetUnfolder]: 6/11 cut-off events. [2023-08-30 17:47:12,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:47:12,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:12,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 17:47:12,752 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 4 more)] === [2023-08-30 17:47:12,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2815618, now seen corresponding path program 1 times [2023-08-30 17:47:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:12,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417986507] [2023-08-30 17:47:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:13,182 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 17:47:13,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:13,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417986507] [2023-08-30 17:47:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417986507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:47:13,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:47:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:47:13,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294099705] [2023-08-30 17:47:13,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:47:13,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:47:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:47:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:47:13,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 733 out of 1616 [2023-08-30 17:47:13,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 56 transitions, 121 flow. Second operand has 2 states, 2 states have (on average 734.5) internal successors, (1469), 2 states have internal predecessors, (1469), 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 17:47:13,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:13,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 733 of 1616 [2023-08-30 17:47:13,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:13,451 INFO L130 PetriNetUnfolder]: 169/319 cut-off events. [2023-08-30 17:47:13,452 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 17:47:13,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 319 events. 169/319 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1048 event pairs, 159 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 566. Up to 320 conditions per place. [2023-08-30 17:47:13,458 INFO L137 encePairwiseOnDemand]: 1601/1616 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-30 17:47:13,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-08-30 17:47:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:47:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:47:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1522 transitions. [2023-08-30 17:47:13,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709158415841584 [2023-08-30 17:47:13,478 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1522 transitions. [2023-08-30 17:47:13,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1522 transitions. [2023-08-30 17:47:13,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:13,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1522 transitions. [2023-08-30 17:47:13,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 761.0) internal successors, (1522), 2 states have internal predecessors, (1522), 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 17:47:13,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1616.0) internal successors, (4848), 3 states have internal predecessors, (4848), 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 17:47:13,504 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1616.0) internal successors, (4848), 3 states have internal predecessors, (4848), 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 17:47:13,506 INFO L175 Difference]: Start difference. First operand has 39 places, 56 transitions, 121 flow. Second operand 2 states and 1522 transitions. [2023-08-30 17:47:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-08-30 17:47:13,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:47:13,511 INFO L231 Difference]: Finished difference. Result has 36 places, 41 transitions, 86 flow [2023-08-30 17:47:13,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=41} [2023-08-30 17:47:13,515 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-30 17:47:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 41 transitions, 86 flow [2023-08-30 17:47:13,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 734.5) internal successors, (1469), 2 states have internal predecessors, (1469), 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 17:47:13,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:13,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:47:13,517 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 4 more)] === [2023-08-30 17:47:13,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1633786917, now seen corresponding path program 1 times [2023-08-30 17:47:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:13,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238242280] [2023-08-30 17:47:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:14,206 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 17:47:14,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238242280] [2023-08-30 17:47:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238242280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:47:14,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:47:14,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:47:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515700475] [2023-08-30 17:47:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:47:14,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:47:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:47:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:47:14,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 715 out of 1616 [2023-08-30 17:47:14,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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 17:47:14,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:14,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 715 of 1616 [2023-08-30 17:47:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:14,646 INFO L130 PetriNetUnfolder]: 170/332 cut-off events. [2023-08-30 17:47:14,646 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 17:47:14,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 332 events. 170/332 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1191 event pairs, 69 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 683. Up to 190 conditions per place. [2023-08-30 17:47:14,647 INFO L137 encePairwiseOnDemand]: 1612/1616 looper letters, 48 selfloop transitions, 3 changer transitions 3/54 dead transitions. [2023-08-30 17:47:14,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 221 flow [2023-08-30 17:47:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:47:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:47:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2200 transitions. [2023-08-30 17:47:14,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537953795379538 [2023-08-30 17:47:14,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2200 transitions. [2023-08-30 17:47:14,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2200 transitions. [2023-08-30 17:47:14,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:14,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2200 transitions. [2023-08-30 17:47:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 733.3333333333334) internal successors, (2200), 3 states have internal predecessors, (2200), 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 17:47:14,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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 17:47:14,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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 17:47:14,664 INFO L175 Difference]: Start difference. First operand has 36 places, 41 transitions, 86 flow. Second operand 3 states and 2200 transitions. [2023-08-30 17:47:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 221 flow [2023-08-30 17:47:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:47:14,665 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2023-08-30 17:47:14,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-08-30 17:47:14,666 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-30 17:47:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2023-08-30 17:47:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 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 17:47:14,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:14,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:47:14,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:47:14,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 375739505, now seen corresponding path program 1 times [2023-08-30 17:47:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705580981] [2023-08-30 17:47:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:14,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:15,362 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 17:47:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705580981] [2023-08-30 17:47:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705580981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:47:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:47:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:47:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585514304] [2023-08-30 17:47:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:47:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:47:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:47:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:47:15,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 725 out of 1616 [2023-08-30 17:47:15,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 728.3333333333334) internal successors, (2185), 3 states have internal predecessors, (2185), 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 17:47:15,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:15,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 725 of 1616 [2023-08-30 17:47:15,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:15,587 INFO L130 PetriNetUnfolder]: 170/333 cut-off events. [2023-08-30 17:47:15,587 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-30 17:47:15,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 333 events. 170/333 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1141 event pairs, 152 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 787. Up to 333 conditions per place. [2023-08-30 17:47:15,588 INFO L137 encePairwiseOnDemand]: 1612/1616 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 17:47:15,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 198 flow [2023-08-30 17:47:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:47:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:47:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2219 transitions. [2023-08-30 17:47:15,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577145214521452 [2023-08-30 17:47:15,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2219 transitions. [2023-08-30 17:47:15,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2219 transitions. [2023-08-30 17:47:15,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:15,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2219 transitions. [2023-08-30 17:47:15,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 739.6666666666666) internal successors, (2219), 3 states have internal predecessors, (2219), 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 17:47:15,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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 17:47:15,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1616.0) internal successors, (6464), 4 states have internal predecessors, (6464), 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 17:47:15,605 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 2219 transitions. [2023-08-30 17:47:15,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 198 flow [2023-08-30 17:47:15,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:47:15,606 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 116 flow [2023-08-30 17:47:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2023-08-30 17:47:15,607 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 17:47:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 116 flow [2023-08-30 17:47:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 728.3333333333334) internal successors, (2185), 3 states have internal predecessors, (2185), 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 17:47:15,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:15,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:47:15,609 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:47:15,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1338763587, now seen corresponding path program 1 times [2023-08-30 17:47:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211022569] [2023-08-30 17:47:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:16,213 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 17:47:16,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211022569] [2023-08-30 17:47:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211022569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:47:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773966621] [2023-08-30 17:47:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:47:16,230 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 17:47:16,231 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 17:47:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:17,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 17:47:17,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:47:17,364 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 17:47:17,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:47:17,560 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 17:47:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773966621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:47:17,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:47:17,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 17:47:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546537888] [2023-08-30 17:47:17,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:47:17,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:47:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:47:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:47:17,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 721 out of 1616 [2023-08-30 17:47:17,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 723.2857142857143) internal successors, (5063), 7 states have internal predecessors, (5063), 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 17:47:17,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:17,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 721 of 1616 [2023-08-30 17:47:17,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:17,965 INFO L130 PetriNetUnfolder]: 170/338 cut-off events. [2023-08-30 17:47:17,965 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-30 17:47:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 338 events. 170/338 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1167 event pairs, 152 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 772. Up to 333 conditions per place. [2023-08-30 17:47:17,966 INFO L137 encePairwiseOnDemand]: 1608/1616 looper letters, 41 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2023-08-30 17:47:17,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 230 flow [2023-08-30 17:47:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:47:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:47:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4383 transitions. [2023-08-30 17:47:17,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520420792079208 [2023-08-30 17:47:17,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4383 transitions. [2023-08-30 17:47:17,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4383 transitions. [2023-08-30 17:47:17,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:17,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4383 transitions. [2023-08-30 17:47:17,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 730.5) internal successors, (4383), 6 states have internal predecessors, (4383), 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 17:47:17,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1616.0) internal successors, (11312), 7 states have internal predecessors, (11312), 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 17:47:17,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1616.0) internal successors, (11312), 7 states have internal predecessors, (11312), 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 17:47:17,991 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 116 flow. Second operand 6 states and 4383 transitions. [2023-08-30 17:47:17,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 230 flow [2023-08-30 17:47:17,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 17:47:17,993 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 178 flow [2023-08-30 17:47:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-30 17:47:17,993 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-30 17:47:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 178 flow [2023-08-30 17:47:17,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 723.2857142857143) internal successors, (5063), 7 states have internal predecessors, (5063), 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 17:47:17,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:17,995 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:18,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 17:47:18,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:18,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:47:18,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2050164495, now seen corresponding path program 2 times [2023-08-30 17:47:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693254390] [2023-08-30 17:47:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:18,813 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 17:47:18,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693254390] [2023-08-30 17:47:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693254390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:47:18,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615150532] [2023-08-30 17:47:18,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:47:18,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:18,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:47:18,816 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 17:47:18,854 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 17:47:19,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:47:19,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:47:19,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 17:47:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:47:19,832 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 17:47:19,832 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 17:47:19,842 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 17:47:19,918 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 17:47:19,938 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 17:47:19,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:47:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615150532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:47:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:47:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 17:47:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220402978] [2023-08-30 17:47:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:47:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:47:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:47:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 17:47:20,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 712 out of 1616 [2023-08-30 17:47:20,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 714.75) internal successors, (2859), 4 states have internal predecessors, (2859), 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 17:47:20,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:20,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 712 of 1616 [2023-08-30 17:47:20,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:20,389 INFO L130 PetriNetUnfolder]: 178/363 cut-off events. [2023-08-30 17:47:20,389 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 17:47:20,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 363 events. 178/363 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1335 event pairs, 89 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 851. Up to 153 conditions per place. [2023-08-30 17:47:20,391 INFO L137 encePairwiseOnDemand]: 1611/1616 looper letters, 53 selfloop transitions, 5 changer transitions 7/65 dead transitions. [2023-08-30 17:47:20,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 351 flow [2023-08-30 17:47:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:47:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:47:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2907 transitions. [2023-08-30 17:47:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44972153465346537 [2023-08-30 17:47:20,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2907 transitions. [2023-08-30 17:47:20,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2907 transitions. [2023-08-30 17:47:20,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:20,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2907 transitions. [2023-08-30 17:47:20,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 726.75) internal successors, (2907), 4 states have internal predecessors, (2907), 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 17:47:20,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1616.0) internal successors, (8080), 5 states have internal predecessors, (8080), 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 17:47:20,407 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1616.0) internal successors, (8080), 5 states have internal predecessors, (8080), 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 17:47:20,407 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 178 flow. Second operand 4 states and 2907 transitions. [2023-08-30 17:47:20,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 351 flow [2023-08-30 17:47:20,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 341 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 17:47:20,409 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 190 flow [2023-08-30 17:47:20,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-30 17:47:20,410 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 17:47:20,410 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 190 flow [2023-08-30 17:47:20,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 714.75) internal successors, (2859), 4 states have internal predecessors, (2859), 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 17:47:20,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:20,411 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:20,433 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 17:47:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:20,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:47:20,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash 869410682, now seen corresponding path program 1 times [2023-08-30 17:47:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:20,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388596304] [2023-08-30 17:47:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:20,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:21,508 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 17:47:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388596304] [2023-08-30 17:47:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388596304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:47:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934050673] [2023-08-30 17:47:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:21,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:21,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:47:21,510 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 17:47:21,512 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 17:47:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:22,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 17:47:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:47:22,562 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 17:47:22,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:47:22,833 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 17:47:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934050673] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:47:22,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:47:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 17:47:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021786217] [2023-08-30 17:47:22,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:47:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 17:47:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:47:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 17:47:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-30 17:47:23,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1616 [2023-08-30 17:47:23,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 190 flow. Second operand has 17 states, 17 states have (on average 720.5882352941177) internal successors, (12250), 17 states have internal predecessors, (12250), 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 17:47:23,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:47:23,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1616 [2023-08-30 17:47:23,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:47:25,882 INFO L130 PetriNetUnfolder]: 166/348 cut-off events. [2023-08-30 17:47:25,882 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 17:47:25,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 348 events. 166/348 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1236 event pairs, 148 based on Foata normal form. 9/350 useless extension candidates. Maximal degree in co-relation 902. Up to 334 conditions per place. [2023-08-30 17:47:25,884 INFO L137 encePairwiseOnDemand]: 1608/1616 looper letters, 42 selfloop transitions, 17 changer transitions 0/59 dead transitions. [2023-08-30 17:47:25,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 356 flow [2023-08-30 17:47:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:47:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:47:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 8702 transitions. [2023-08-30 17:47:25,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487417491749175 [2023-08-30 17:47:25,897 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 8702 transitions. [2023-08-30 17:47:25,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 8702 transitions. [2023-08-30 17:47:25,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:47:25,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 8702 transitions. [2023-08-30 17:47:25,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 725.1666666666666) internal successors, (8702), 12 states have internal predecessors, (8702), 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 17:47:25,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1616.0) internal successors, (21008), 13 states have internal predecessors, (21008), 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 17:47:25,932 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1616.0) internal successors, (21008), 13 states have internal predecessors, (21008), 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 17:47:25,932 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 190 flow. Second operand 12 states and 8702 transitions. [2023-08-30 17:47:25,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 356 flow [2023-08-30 17:47:25,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:47:25,938 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 328 flow [2023-08-30 17:47:25,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1616, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=328, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 17:47:25,940 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-08-30 17:47:25,940 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 328 flow [2023-08-30 17:47:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 720.5882352941177) internal successors, (12250), 17 states have internal predecessors, (12250), 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 17:47:25,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:47:25,945 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:47:25,969 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 17:47:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:26,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_setErr0ASSERT_VIOLATIONERROR_FUNCTION === [whoop_wrapper_pc8736x_gpio_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:47:26,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:47:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1641300154, now seen corresponding path program 2 times [2023-08-30 17:47:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:47:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480107232] [2023-08-30 17:47:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:47:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:47:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:47:27,405 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 17:47:27,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:47:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480107232] [2023-08-30 17:47:27,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480107232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:47:27,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952250997] [2023-08-30 17:47:27,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:47:27,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:47:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:47:27,406 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 17:47:27,408 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 17:47:28,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:47:28,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:47:28,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 123 conjunts are in the unsatisfiable core [2023-08-30 17:47:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:47:28,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:28,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:47:33,180 INFO L321 Elim1Store]: treesize reduction 8778, result has 6.9 percent of original size [2023-08-30 17:47:33,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 30 case distinctions, treesize of input 153 treesize of output 731 Killed by 15