./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.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 fcc0f5ef9d6c49d1991b076f6c361ed83f7f84302617131ead28c4e655562844 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:37:23,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:37:23,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:37:23,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:37:23,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:37:23,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:37:23,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:37:23,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:37:23,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:37:23,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:37:23,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:37:23,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:37:23,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:37:23,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:37:23,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:37:23,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:37:23,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:37:23,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:37:23,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:37:23,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:37:23,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:37:23,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:37:23,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:37:23,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:37:23,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:37:23,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:37:23,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:37:23,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:37:23,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:37:23,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:37:23,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:37:23,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:37:23,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:37:23,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:37:23,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:37:23,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:37:23,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:37:23,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:37:23,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:37:23,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:37:23,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:37:23,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:37:23,390 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:37:23,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:37:23,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:37:23,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:37:23,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:37:23,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:37:23,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:37:23,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:37:23,393 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:37:23,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:37:23,394 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:37:23,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:37:23,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:37:23,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:37:23,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:37:23,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:37:23,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:37:23,396 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:37:23,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:37:23,396 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:37:23,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:37:23,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:37:23,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:37:23,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:37:23,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:37:23,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:37:23,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:37:23,399 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:37:23,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:37:23,399 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:37:23,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcc0f5ef9d6c49d1991b076f6c361ed83f7f84302617131ead28c4e655562844 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:37:23,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:37:23,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:37:23,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:37:23,702 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:37:23,703 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:37:23,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-08-30 23:37:24,900 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:37:25,357 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:37:25,358 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-08-30 23:37:25,399 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10c72500/7981ad4cf8d3467ab2f51803b09afc8e/FLAG914a18274 [2023-08-30 23:37:25,418 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10c72500/7981ad4cf8d3467ab2f51803b09afc8e [2023-08-30 23:37:25,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:37:25,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:37:25,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:37:25,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:37:25,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:37:25,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:37:25" (1/1) ... [2023-08-30 23:37:25,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571ff9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:25, skipping insertion in model container [2023-08-30 23:37:25,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:37:25" (1/1) ... [2023-08-30 23:37:25,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:37:25,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:37:25,812 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-08-30 23:37:28,463 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:37:29,066 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:37:29,068 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:37:29,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:37:29,172 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:37:29,200 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i[5469,5482] [2023-08-30 23:37:29,380 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 23:37:29,420 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:37:29,420 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 23:37:29,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:37:30,126 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,126 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,127 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,136 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,137 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,137 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,137 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:37:30,143 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:37:30,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30 WrapperNode [2023-08-30 23:37:30,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:37:30,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:37:30,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:37:30,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:37:30,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,396 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 75, statements flattened = 829 [2023-08-30 23:37:30,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:37:30,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:37:30,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:37:30,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:37:30,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,447 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:37:30,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:37:30,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:37:30,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:37:30,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (1/1) ... [2023-08-30 23:37:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:37:30,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:37:30,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 23:37:30,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 23:37:30,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 23:37:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 23:37:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:37:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 23:37:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:37:30,545 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:37:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:37:30,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:37:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 23:37:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:37:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 23:37:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:37:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_configure [2023-08-30 23:37:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_configure [2023-08-30 23:37:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:37:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:37:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:37:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 23:37:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:37:30,550 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 23:37:31,063 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:37:31,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:37:31,894 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:37:31,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:37:31,927 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 23:37:31,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:31 BoogieIcfgContainer [2023-08-30 23:37:31,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:37:31,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:37:31,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:37:31,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:37:31,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:37:25" (1/3) ... [2023-08-30 23:37:31,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c086e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:37:31, skipping insertion in model container [2023-08-30 23:37:31,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:37:30" (2/3) ... [2023-08-30 23:37:31,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c086e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:37:31, skipping insertion in model container [2023-08-30 23:37:31,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:31" (3/3) ... [2023-08-30 23:37:31,966 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_configure.i [2023-08-30 23:37:31,972 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:37:31,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:37:31,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 23:37:31,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:37:32,187 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 23:37:32,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 911 transitions, 1838 flow [2023-08-30 23:37:32,490 INFO L130 PetriNetUnfolder]: 60/909 cut-off events. [2023-08-30 23:37:32,491 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:37:32,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 909 events. 60/909 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1669 event pairs, 0 based on Foata normal form. 0/846 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-08-30 23:37:32,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 911 transitions, 1838 flow [2023-08-30 23:37:32,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 848 places, 901 transitions, 1811 flow [2023-08-30 23:37:32,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:37:32,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 848 places, 901 transitions, 1811 flow [2023-08-30 23:37:32,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 848 places, 901 transitions, 1811 flow [2023-08-30 23:37:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 848 places, 901 transitions, 1811 flow [2023-08-30 23:37:32,705 INFO L130 PetriNetUnfolder]: 60/901 cut-off events. [2023-08-30 23:37:32,705 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 23:37:32,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 901 events. 60/901 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1537 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 752. Up to 9 conditions per place. [2023-08-30 23:37:32,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 49770 [2023-08-30 23:39:11,188 WARN L222 SmtUtils]: Spent 8.51s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:39:17,962 WARN L222 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:39:35,773 WARN L222 SmtUtils]: Spent 17.81s on a formula simplification. DAG size of input: 309 DAG size of output: 307 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:39:42,687 WARN L222 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 288 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:40:20,742 WARN L222 SmtUtils]: Spent 33.67s on a formula simplification. DAG size of input: 659 DAG size of output: 657 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:40:34,506 WARN L222 SmtUtils]: Spent 13.74s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:42:43,916 WARN L222 SmtUtils]: Spent 2.16m on a formula simplification. DAG size of input: 662 DAG size of output: 660 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:43:41,003 WARN L222 SmtUtils]: Spent 57.07s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 23:43:50,605 INFO L134 LiptonReduction]: Checked pairs total: 39117 [2023-08-30 23:43:50,606 INFO L136 LiptonReduction]: Total number of compositions: 1006 [2023-08-30 23:43:50,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:43:50,622 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;@26a2ea38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:43:50,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 23:43:50,631 INFO L130 PetriNetUnfolder]: 4/8 cut-off events. [2023-08-30 23:43:50,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:43:50,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:43:50,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 23:43:50,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:43:50,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:43:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 3454771, now seen corresponding path program 1 times [2023-08-30 23:43:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:43:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888035906] [2023-08-30 23:43:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:43:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:43:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888035906] [2023-08-30 23:43:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888035906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:43:51,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:43:51,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:43:51,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323215790] [2023-08-30 23:43:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:43:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 23:43:51,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:43:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 23:43:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 23:43:51,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 874 out of 1917 [2023-08-30 23:43:51,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 117 flow. Second operand has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:51,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:43:51,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 874 of 1917 [2023-08-30 23:43:51,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:43:51,521 INFO L130 PetriNetUnfolder]: 115/229 cut-off events. [2023-08-30 23:43:51,522 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 23:43:51,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 229 events. 115/229 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 649 event pairs, 105 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 326. Up to 230 conditions per place. [2023-08-30 23:43:51,527 INFO L137 encePairwiseOnDemand]: 1904/1917 looper letters, 40 selfloop transitions, 0 changer transitions 1/41 dead transitions. [2023-08-30 23:43:51,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-08-30 23:43:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 23:43:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 23:43:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1802 transitions. [2023-08-30 23:43:51,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700052164840897 [2023-08-30 23:43:51,550 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1802 transitions. [2023-08-30 23:43:51,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1802 transitions. [2023-08-30 23:43:51,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:43:51,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1802 transitions. [2023-08-30 23:43:51,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 901.0) internal successors, (1802), 2 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:51,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:51,584 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1917.0) internal successors, (5751), 3 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:51,586 INFO L175 Difference]: Start difference. First operand has 39 places, 54 transitions, 117 flow. Second operand 2 states and 1802 transitions. [2023-08-30 23:43:51,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-08-30 23:43:51,589 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 23:43:51,590 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 84 flow [2023-08-30 23:43:51,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-08-30 23:43:51,595 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-30 23:43:51,595 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 84 flow [2023-08-30 23:43:51,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 875.5) internal successors, (1751), 2 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:51,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:43:51,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:43:51,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:43:51,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:43:51,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:43:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 739763751, now seen corresponding path program 1 times [2023-08-30 23:43:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:43:51,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820325314] [2023-08-30 23:43:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:51,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:43:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:52,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:43:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820325314] [2023-08-30 23:43:52,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820325314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:43:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:43:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:43:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314441915] [2023-08-30 23:43:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:43:52,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:43:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:43:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:43:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:43:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 866 out of 1917 [2023-08-30 23:43:52,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 868.3333333333334) internal successors, (2605), 3 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:52,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:43:52,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 866 of 1917 [2023-08-30 23:43:52,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:43:52,622 INFO L130 PetriNetUnfolder]: 106/213 cut-off events. [2023-08-30 23:43:52,622 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 23:43:52,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 213 events. 106/213 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 588 event pairs, 96 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 433. Up to 213 conditions per place. [2023-08-30 23:43:52,623 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 23:43:52,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 168 flow [2023-08-30 23:43:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:43:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:43:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2641 transitions. [2023-08-30 23:43:52,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592244826986611 [2023-08-30 23:43:52,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2641 transitions. [2023-08-30 23:43:52,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2641 transitions. [2023-08-30 23:43:52,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:43:52,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2641 transitions. [2023-08-30 23:43:52,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 880.3333333333334) internal successors, (2641), 3 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:52,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:52,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:52,652 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 84 flow. Second operand 3 states and 2641 transitions. [2023-08-30 23:43:52,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 168 flow [2023-08-30 23:43:52,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 23:43:52,654 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 98 flow [2023-08-30 23:43:52,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-30 23:43:52,654 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-08-30 23:43:52,655 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 98 flow [2023-08-30 23:43:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 868.3333333333334) internal successors, (2605), 3 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:52,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:43:52,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:43:52,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:43:52,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:43:52,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:43:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1340012363, now seen corresponding path program 1 times [2023-08-30 23:43:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:43:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53103860] [2023-08-30 23:43:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:43:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:53,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:43:53,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53103860] [2023-08-30 23:43:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53103860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:43:53,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054894352] [2023-08-30 23:43:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:43:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:43:53,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:43:53,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 23:43:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:53,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 23:43:53,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:43:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:43:53,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:43:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054894352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:43:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:43:53,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 23:43:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473097704] [2023-08-30 23:43:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:43:53,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:43:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:43:53,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:43:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 23:43:54,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 855 out of 1917 [2023-08-30 23:43:54,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 857.6666666666666) internal successors, (2573), 3 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:54,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:43:54,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 855 of 1917 [2023-08-30 23:43:54,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:43:54,665 INFO L130 PetriNetUnfolder]: 145/292 cut-off events. [2023-08-30 23:43:54,665 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 23:43:54,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 292 events. 145/292 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1051 event pairs, 42 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 597. Up to 202 conditions per place. [2023-08-30 23:43:54,667 INFO L137 encePairwiseOnDemand]: 1912/1917 looper letters, 49 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-30 23:43:54,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 229 flow [2023-08-30 23:43:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:43:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:43:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2618 transitions. [2023-08-30 23:43:54,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552251782298731 [2023-08-30 23:43:54,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2618 transitions. [2023-08-30 23:43:54,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2618 transitions. [2023-08-30 23:43:54,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:43:54,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2618 transitions. [2023-08-30 23:43:54,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 872.6666666666666) internal successors, (2618), 3 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:54,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:54,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1917.0) internal successors, (7668), 4 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:54,701 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 98 flow. Second operand 3 states and 2618 transitions. [2023-08-30 23:43:54,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 229 flow [2023-08-30 23:43:54,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 225 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:43:54,703 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 120 flow [2023-08-30 23:43:54,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2023-08-30 23:43:54,704 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-30 23:43:54,705 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 120 flow [2023-08-30 23:43:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 857.6666666666666) internal successors, (2573), 3 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:54,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:43:54,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:43:54,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 23:43:54,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:43:54,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:43:54,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:43:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1409301911, now seen corresponding path program 1 times [2023-08-30 23:43:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:43:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155565706] [2023-08-30 23:43:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:54,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:43:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:43:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155565706] [2023-08-30 23:43:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155565706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:43:55,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631648979] [2023-08-30 23:43:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:55,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:43:55,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:43:55,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:43:55,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 23:43:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:56,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 23:43:56,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:43:56,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:43:56,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 23:43:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 23:43:56,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:43:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631648979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:43:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:43:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 23:43:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172822130] [2023-08-30 23:43:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:43:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 23:43:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:43:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 23:43:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 23:43:56,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 854 out of 1917 [2023-08-30 23:43:56,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 855.8) internal successors, (4279), 5 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:56,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:43:56,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 854 of 1917 [2023-08-30 23:43:56,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:43:57,815 INFO L130 PetriNetUnfolder]: 139/280 cut-off events. [2023-08-30 23:43:57,815 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-30 23:43:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 280 events. 139/280 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 957 event pairs, 60 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 687. Up to 197 conditions per place. [2023-08-30 23:43:57,818 INFO L137 encePairwiseOnDemand]: 1913/1917 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-30 23:43:57,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 221 flow [2023-08-30 23:43:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:43:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:43:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3461 transitions. [2023-08-30 23:43:57,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513562858633281 [2023-08-30 23:43:57,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3461 transitions. [2023-08-30 23:43:57,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3461 transitions. [2023-08-30 23:43:57,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:43:57,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3461 transitions. [2023-08-30 23:43:57,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 865.25) internal successors, (3461), 4 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:57,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:57,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:57,862 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 120 flow. Second operand 4 states and 3461 transitions. [2023-08-30 23:43:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 221 flow [2023-08-30 23:43:57,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:43:57,865 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 120 flow [2023-08-30 23:43:57,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-30 23:43:57,866 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 23:43:57,867 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 120 flow [2023-08-30 23:43:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 855.8) internal successors, (4279), 5 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:43:57,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:43:57,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:43:57,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 23:43:58,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 23:43:58,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:43:58,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:43:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1332905514, now seen corresponding path program 1 times [2023-08-30 23:43:58,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:43:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654561377] [2023-08-30 23:43:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:58,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:43:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:43:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654561377] [2023-08-30 23:43:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654561377] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:43:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317033497] [2023-08-30 23:43:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:43:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:43:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:43:58,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:43:58,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 23:43:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:43:59,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 23:43:59,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:43:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:43:59,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:44:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:44:00,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317033497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:44:00,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:44:00,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 23:44:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528456946] [2023-08-30 23:44:00,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:44:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 23:44:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:44:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 23:44:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 23:44:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 860 out of 1917 [2023-08-30 23:44:00,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 862.625) internal successors, (6901), 8 states have internal predecessors, (6901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:00,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:44:00,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 860 of 1917 [2023-08-30 23:44:00,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:44:00,996 INFO L130 PetriNetUnfolder]: 139/285 cut-off events. [2023-08-30 23:44:00,997 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 23:44:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 285 events. 139/285 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 942 event pairs, 109 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 687. Up to 275 conditions per place. [2023-08-30 23:44:00,998 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-08-30 23:44:00,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 232 flow [2023-08-30 23:44:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 23:44:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 23:44:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6075 transitions. [2023-08-30 23:44:01,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45271629778672035 [2023-08-30 23:44:01,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6075 transitions. [2023-08-30 23:44:01,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6075 transitions. [2023-08-30 23:44:01,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:44:01,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6075 transitions. [2023-08-30 23:44:01,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 867.8571428571429) internal successors, (6075), 7 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:01,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:01,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1917.0) internal successors, (15336), 8 states have internal predecessors, (15336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:01,045 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 120 flow. Second operand 7 states and 6075 transitions. [2023-08-30 23:44:01,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 232 flow [2023-08-30 23:44:01,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 23:44:01,047 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 156 flow [2023-08-30 23:44:01,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2023-08-30 23:44:01,048 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-30 23:44:01,048 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 156 flow [2023-08-30 23:44:01,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 862.625) internal successors, (6901), 8 states have internal predecessors, (6901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:01,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:44:01,050 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:44:01,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 23:44:01,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:01,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:44:01,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:44:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash 174776568, now seen corresponding path program 2 times [2023-08-30 23:44:01,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:44:01,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64795639] [2023-08-30 23:44:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:44:01,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:44:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:44:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:44:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:44:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64795639] [2023-08-30 23:44:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64795639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:44:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746789907] [2023-08-30 23:44:02,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:44:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:02,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:44:02,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:44:02,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 23:44:03,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:44:03,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:44:03,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 23:44:03,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:44:03,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 23:44:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 23:44:03,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:44:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746789907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:44:03,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:44:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-30 23:44:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462924149] [2023-08-30 23:44:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:44:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:44:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:44:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:44:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-30 23:44:03,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 853 out of 1917 [2023-08-30 23:44:03,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 856.75) internal successors, (3427), 4 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:03,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:44:03,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 853 of 1917 [2023-08-30 23:44:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:44:04,616 INFO L130 PetriNetUnfolder]: 136/286 cut-off events. [2023-08-30 23:44:04,617 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 23:44:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 286 events. 136/286 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 989 event pairs, 54 based on Foata normal form. 8/285 useless extension candidates. Maximal degree in co-relation 680. Up to 159 conditions per place. [2023-08-30 23:44:04,618 INFO L137 encePairwiseOnDemand]: 1910/1917 looper letters, 45 selfloop transitions, 7 changer transitions 7/59 dead transitions. [2023-08-30 23:44:04,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 308 flow [2023-08-30 23:44:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:44:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:44:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3462 transitions. [2023-08-30 23:44:04,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514866979655712 [2023-08-30 23:44:04,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3462 transitions. [2023-08-30 23:44:04,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3462 transitions. [2023-08-30 23:44:04,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:44:04,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3462 transitions. [2023-08-30 23:44:04,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 865.5) internal successors, (3462), 4 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:04,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:04,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1917.0) internal successors, (9585), 5 states have internal predecessors, (9585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:04,645 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 156 flow. Second operand 4 states and 3462 transitions. [2023-08-30 23:44:04,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 308 flow [2023-08-30 23:44:04,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 285 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 23:44:04,648 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 161 flow [2023-08-30 23:44:04,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-08-30 23:44:04,649 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-30 23:44:04,649 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 161 flow [2023-08-30 23:44:04,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 856.75) internal successors, (3427), 4 states have internal predecessors, (3427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:04,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:44:04,651 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:44:04,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 23:44:04,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:04,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:44:04,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:44:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1123117706, now seen corresponding path program 1 times [2023-08-30 23:44:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:44:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138617443] [2023-08-30 23:44:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:44:04,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:44:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:44:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:44:06,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:44:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138617443] [2023-08-30 23:44:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138617443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:44:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875847561] [2023-08-30 23:44:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:44:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:44:06,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:44:06,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 23:44:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:44:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 23:44:08,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:44:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:44:09,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 23:44:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 23:44:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875847561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 23:44:09,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 23:44:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 23:44:09,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173428029] [2023-08-30 23:44:09,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 23:44:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 23:44:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:44:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 23:44:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-08-30 23:44:09,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 862 out of 1917 [2023-08-30 23:44:09,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 161 flow. Second operand has 17 states, 17 states have (on average 863.8235294117648) internal successors, (14685), 17 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:09,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:44:09,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 862 of 1917 [2023-08-30 23:44:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:44:11,048 INFO L130 PetriNetUnfolder]: 122/281 cut-off events. [2023-08-30 23:44:11,048 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-30 23:44:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 281 events. 122/281 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 983 event pairs, 102 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 748. Up to 267 conditions per place. [2023-08-30 23:44:11,050 INFO L137 encePairwiseOnDemand]: 1909/1917 looper letters, 41 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2023-08-30 23:44:11,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 313 flow [2023-08-30 23:44:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 23:44:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 23:44:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 10416 transitions. [2023-08-30 23:44:11,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527908189880021 [2023-08-30 23:44:11,071 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 10416 transitions. [2023-08-30 23:44:11,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 10416 transitions. [2023-08-30 23:44:11,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:44:11,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 10416 transitions. [2023-08-30 23:44:11,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 868.0) internal successors, (10416), 12 states have internal predecessors, (10416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:11,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:11,124 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1917.0) internal successors, (24921), 13 states have internal predecessors, (24921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:11,124 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 161 flow. Second operand 12 states and 10416 transitions. [2023-08-30 23:44:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 313 flow [2023-08-30 23:44:11,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 299 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 23:44:11,130 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 279 flow [2023-08-30 23:44:11,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=279, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-30 23:44:11,132 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-08-30 23:44:11,132 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 279 flow [2023-08-30 23:44:11,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 863.8235294117648) internal successors, (14685), 17 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:11,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:44:11,136 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:44:11,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 23:44:11,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:11,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 23:44:11,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:44:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash 8662986, now seen corresponding path program 2 times [2023-08-30 23:44:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:44:11,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339088507] [2023-08-30 23:44:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:44:11,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:44:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:44:12,747 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 23:44:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:44:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339088507] [2023-08-30 23:44:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339088507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 23:44:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619176256] [2023-08-30 23:44:12,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 23:44:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:44:12,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 23:44:12,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 23:44:14,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 23:44:14,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 23:44:14,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 23:44:14,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 23:44:14,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 23:44:14,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 23:44:14,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-08-30 23:44:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 23:44:14,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 23:44:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619176256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:44:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 23:44:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2023-08-30 23:44:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142484544] [2023-08-30 23:44:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:44:14,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 23:44:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:44:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 23:44:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-08-30 23:44:15,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 852 out of 1917 [2023-08-30 23:44:15,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 854.6666666666666) internal successors, (5128), 6 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:15,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:44:15,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 852 of 1917 [2023-08-30 23:44:15,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:44:16,221 INFO L130 PetriNetUnfolder]: 116/269 cut-off events. [2023-08-30 23:44:16,221 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-08-30 23:44:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 269 events. 116/269 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 963 event pairs, 52 based on Foata normal form. 6/268 useless extension candidates. Maximal degree in co-relation 712. Up to 159 conditions per place. [2023-08-30 23:44:16,223 INFO L137 encePairwiseOnDemand]: 1911/1917 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-08-30 23:44:16,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 437 flow [2023-08-30 23:44:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:44:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:44:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4309 transitions. [2023-08-30 23:44:16,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495565988523735 [2023-08-30 23:44:16,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4309 transitions. [2023-08-30 23:44:16,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4309 transitions. [2023-08-30 23:44:16,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:44:16,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4309 transitions. [2023-08-30 23:44:16,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 861.8) internal successors, (4309), 5 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:16,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1917.0) internal successors, (11502), 6 states have internal predecessors, (11502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:16,244 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 279 flow. Second operand 5 states and 4309 transitions. [2023-08-30 23:44:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 437 flow [2023-08-30 23:44:16,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 413 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 23:44:16,246 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-08-30 23:44:16,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1917, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-08-30 23:44:16,247 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-30 23:44:16,247 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-08-30 23:44:16,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 854.6666666666666) internal successors, (5128), 6 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:44:16,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 23:44:16,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-08-30 23:44:16,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 23:44:16,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-30 23:44:16,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-30 23:44:16,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-30 23:44:16,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 23:44:16,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 23:44:16,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 23:44:16,464 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-30 23:44:16,467 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:44:16,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:44:16,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:44:16 BasicIcfg [2023-08-30 23:44:16,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:44:16,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:44:16,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:44:16,471 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:44:16,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:37:31" (3/4) ... [2023-08-30 23:44:16,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:44:16,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_pc8736x_gpio_configure [2023-08-30 23:44:16,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 23:44:16,499 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 94 nodes and edges [2023-08-30 23:44:16,500 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-30 23:44:16,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-08-30 23:44:16,501 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:44:16,574 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:44:16,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:44:16,575 INFO L158 Benchmark]: Toolchain (without parser) took 411153.39ms. Allocated memory was 75.5MB in the beginning and 570.4MB in the end (delta: 494.9MB). Free memory was 43.3MB in the beginning and 214.2MB in the end (delta: -170.9MB). Peak memory consumption was 324.6MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,575 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 55.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:44:16,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4719.69ms. Allocated memory was 75.5MB in the beginning and 113.2MB in the end (delta: 37.7MB). Free memory was 43.1MB in the beginning and 55.5MB in the end (delta: -12.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 254.66ms. Allocated memory is still 113.2MB. Free memory was 55.5MB in the beginning and 43.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,576 INFO L158 Benchmark]: Boogie Preprocessor took 61.60ms. Allocated memory is still 113.2MB. Free memory was 43.5MB in the beginning and 37.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,576 INFO L158 Benchmark]: RCFGBuilder took 1469.50ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 37.2MB in the beginning and 38.3MB in the end (delta: -1.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,577 INFO L158 Benchmark]: TraceAbstraction took 404524.41ms. Allocated memory was 136.3MB in the beginning and 570.4MB in the end (delta: 434.1MB). Free memory was 71.7MB in the beginning and 222.6MB in the end (delta: -150.9MB). Peak memory consumption was 283.0MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,577 INFO L158 Benchmark]: Witness Printer took 103.57ms. Allocated memory is still 570.4MB. Free memory was 222.6MB in the beginning and 214.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 23:44:16,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 55.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4719.69ms. Allocated memory was 75.5MB in the beginning and 113.2MB in the end (delta: 37.7MB). Free memory was 43.1MB in the beginning and 55.5MB in the end (delta: -12.4MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 254.66ms. Allocated memory is still 113.2MB. Free memory was 55.5MB in the beginning and 43.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.60ms. Allocated memory is still 113.2MB. Free memory was 43.5MB in the beginning and 37.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1469.50ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 37.2MB in the beginning and 38.3MB in the end (delta: -1.1MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 404524.41ms. Allocated memory was 136.3MB in the beginning and 570.4MB in the end (delta: 434.1MB). Free memory was 71.7MB in the beginning and 222.6MB in the end (delta: -150.9MB). Peak memory consumption was 283.0MB. Max. memory is 16.1GB. * Witness Printer took 103.57ms. Allocated memory is still 570.4MB. Free memory was 222.6MB in the beginning and 214.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 378.1s, 848 PlacesBefore, 39 PlacesAfterwards, 901 TransitionsBefore, 54 TransitionsAfterwards, 49770 CoEnabledTransitionPairs, 11 FixpointIterations, 559 TrivialSequentialCompositions, 280 ConcurrentSequentialCompositions, 85 TrivialYvCompositions, 44 ConcurrentYvCompositions, 38 ChoiceCompositions, 1006 TotalNumberOfCompositions, 39117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36303, independent: 36127, independent conditional: 0, independent unconditional: 36127, dependent: 176, dependent conditional: 0, dependent unconditional: 176, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26140, independent: 26076, independent conditional: 0, independent unconditional: 26076, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36303, independent: 10051, independent conditional: 0, independent unconditional: 10051, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 26140, unknown conditional: 0, unknown unconditional: 26140] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 1134 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 404.3s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 378.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1106 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 671 mSDsluCounter, 273 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2433 IncrementalHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 123 mSDtfsCounter, 2433 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 198 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 216 ConstructedInterpolants, 2 QuantifiedInterpolants, 1057 SizeOfPredicates, 92 NumberOfNonLiveVariables, 7017 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 67/167 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:44:16,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE