./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_current.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51c838f928ac384d8fdc78da2570bfd8622730962319208ac7b8c7e3db94de0f --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 13:17:34,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:17:34,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:17:34,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:17:34,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:17:34,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:17:34,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:17:34,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:17:34,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:17:34,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:17:34,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:17:34,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:17:34,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:17:34,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:17:34,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:17:34,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:17:34,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:17:34,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:17:34,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:17:34,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:17:34,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:17:34,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:17:34,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:17:34,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:17:34,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:17:34,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:17:34,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:17:34,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:17:34,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:17:34,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:17:34,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:17:34,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:17:34,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:17:34,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:17:34,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:17:34,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:17:34,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:17:34,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:17:34,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:17:34,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:17:34,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:17:34,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:17:34,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:17:34,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:17:34,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:17:34,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:17:34,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:17:34,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:17:34,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:17:34,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:17:34,396 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:17:34,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:17:34,396 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:17:34,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:17:34,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:17:34,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:17:34,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:17:34,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:17:34,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:17:34,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:17:34,398 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:17:34,398 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:17:34,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:17:34,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:17:34,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:17:34,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:17:34,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:17:34,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:17:34,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:17:34,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:17:34,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:17:34,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:17:34,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:17:34,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:17:34,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:17:34,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:17:34,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:17:34,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:17:34,401 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:17:34,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c838f928ac384d8fdc78da2570bfd8622730962319208ac7b8c7e3db94de0f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:17:34,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:17:34,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:17:34,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:17:34,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:17:34,728 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:17:34,729 INFO L432 ainManager$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_current.i [2023-08-30 13:17:35,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:17:36,346 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:17:36,346 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.i [2023-08-30 13:17:36,390 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3c364ff/54ddd87485b2491f97175250ac49b30f/FLAGd20c2f7e5 [2023-08-30 13:17:36,411 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3c364ff/54ddd87485b2491f97175250ac49b30f [2023-08-30 13:17:36,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:17:36,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:17:36,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:17:36,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:17:36,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:17:36,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:17:36" (1/1) ... [2023-08-30 13:17:36,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2668f8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:36, skipping insertion in model container [2023-08-30 13:17:36,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:17:36" (1/1) ... [2023-08-30 13:17:36,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:17:36,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:17:36,845 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_current.i[5469,5482] [2023-08-30 13:17:39,224 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 13:17:39,769 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:17:39,770 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:17:39,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:17:39,841 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:17:39,866 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_current.i[5469,5482] [2023-08-30 13:17:40,039 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 13:17:40,110 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:17:40,110 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 13:17:40,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:17:40,585 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,585 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,586 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,586 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,586 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,586 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,586 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:17:40,592 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:17:40,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40 WrapperNode [2023-08-30 13:17:40,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:17:40,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:17:40,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:17:40,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:17:40,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,754 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 54, statements flattened = 750 [2023-08-30 13:17:40,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:17:40,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:17:40,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:17:40,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:17:40,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:17:40,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:17:40,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:17:40,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:17:40,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (1/1) ... [2023-08-30 13:17:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:17:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:17:40,893 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 13:17:40,917 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 13:17:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:17:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 13:17:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:17:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 13:17:40,934 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 13:17:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 13:17:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 13:17:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_current [2023-08-30 13:17:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:17:40,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:17:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 13:17:40,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:17:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 13:17:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:17:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:17:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 13:17:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:17:40,940 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 13:17:41,419 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:17:41,421 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:17:42,371 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:17:42,390 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:17:42,390 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-30 13:17:42,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:17:42 BoogieIcfgContainer [2023-08-30 13:17:42,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:17:42,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:17:42,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:17:42,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:17:42,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:17:36" (1/3) ... [2023-08-30 13:17:42,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672fc167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:17:42, skipping insertion in model container [2023-08-30 13:17:42,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:40" (2/3) ... [2023-08-30 13:17:42,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672fc167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:17:42, skipping insertion in model container [2023-08-30 13:17:42,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:17:42" (3/3) ... [2023-08-30 13:17:42,400 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_current.i [2023-08-30 13:17:42,406 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:17:42,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:17:42,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 13:17:42,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:17:42,573 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 13:17:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 800 places, 847 transitions, 1710 flow [2023-08-30 13:17:42,863 INFO L130 PetriNetUnfolder]: 54/845 cut-off events. [2023-08-30 13:17:42,863 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:17:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 845 events. 54/845 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1148 event pairs, 0 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 678. Up to 9 conditions per place. [2023-08-30 13:17:42,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 800 places, 847 transitions, 1710 flow [2023-08-30 13:17:42,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 790 places, 837 transitions, 1683 flow [2023-08-30 13:17:42,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:17:42,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 790 places, 837 transitions, 1683 flow [2023-08-30 13:17:42,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 790 places, 837 transitions, 1683 flow [2023-08-30 13:17:42,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 790 places, 837 transitions, 1683 flow [2023-08-30 13:17:43,107 INFO L130 PetriNetUnfolder]: 54/837 cut-off events. [2023-08-30 13:17:43,107 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:17:43,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 837 events. 54/837 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1093 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 678. Up to 9 conditions per place. [2023-08-30 13:17:43,118 INFO L119 LiptonReduction]: Number of co-enabled transitions 12606 [2023-08-30 13:18:56,683 WARN L222 SmtUtils]: Spent 8.45s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:19:03,190 WARN L222 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 467 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:19:46,660 WARN L222 SmtUtils]: Spent 41.95s on a formula simplification. DAG size of input: 629 DAG size of output: 627 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:20:31,525 WARN L222 SmtUtils]: Spent 44.85s 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 13:22:54,284 WARN L222 SmtUtils]: Spent 2.38m on a formula simplification. DAG size of input: 635 DAG size of output: 631 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 13:23:53,720 WARN L222 SmtUtils]: Spent 59.42s 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 13:24:08,730 INFO L134 LiptonReduction]: Checked pairs total: 10533 [2023-08-30 13:24:08,730 INFO L136 LiptonReduction]: Total number of compositions: 1001 [2023-08-30 13:24:08,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:24:08,746 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;@6f473b8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:24:08,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 13:24:08,755 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 13:24:08,755 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:24:08,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:08,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 13:24:08,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:08,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:08,761 INFO L85 PathProgramCache]: Analyzing trace with hash 3125508, now seen corresponding path program 1 times [2023-08-30 13:24:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:08,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097964626] [2023-08-30 13:24:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:09,212 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 13:24:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097964626] [2023-08-30 13:24:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097964626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:09,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:24:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:24:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138078980] [2023-08-30 13:24:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:09,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 13:24:09,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 13:24:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 13:24:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 795 out of 1848 [2023-08-30 13:24:09,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 796.5) internal successors, (1593), 2 states have internal predecessors, (1593), 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 13:24:09,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:09,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 795 of 1848 [2023-08-30 13:24:09,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:09,522 INFO L130 PetriNetUnfolder]: 88/181 cut-off events. [2023-08-30 13:24:09,522 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 13:24:09,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 181 events. 88/181 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 583 event pairs, 78 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 248. Up to 182 conditions per place. [2023-08-30 13:24:09,525 INFO L137 encePairwiseOnDemand]: 1815/1848 looper letters, 38 selfloop transitions, 0 changer transitions 3/41 dead transitions. [2023-08-30 13:24:09,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 173 flow [2023-08-30 13:24:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 13:24:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 13:24:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1664 transitions. [2023-08-30 13:24:09,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2023-08-30 13:24:09,550 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1664 transitions. [2023-08-30 13:24:09,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1664 transitions. [2023-08-30 13:24:09,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:09,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1664 transitions. [2023-08-30 13:24:09,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 832.0) internal successors, (1664), 2 states have internal predecessors, (1664), 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 13:24:09,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1848.0) internal successors, (5544), 3 states have internal predecessors, (5544), 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 13:24:09,583 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1848.0) internal successors, (5544), 3 states have internal predecessors, (5544), 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 13:24:09,584 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 157 flow. Second operand 2 states and 1664 transitions. [2023-08-30 13:24:09,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 173 flow [2023-08-30 13:24:09,588 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 13:24:09,590 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 80 flow [2023-08-30 13:24:09,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, 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=80, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2023-08-30 13:24:09,594 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -23 predicate places. [2023-08-30 13:24:09,594 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 80 flow [2023-08-30 13:24:09,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 796.5) internal successors, (1593), 2 states have internal predecessors, (1593), 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 13:24:09,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:09,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:24:09,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:24:09,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:09,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1291118021, now seen corresponding path program 1 times [2023-08-30 13:24:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270880588] [2023-08-30 13:24:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:09,961 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 13:24:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270880588] [2023-08-30 13:24:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270880588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:24:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:24:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126879539] [2023-08-30 13:24:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:09,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:24:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:24:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:24:09,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 785 out of 1848 [2023-08-30 13:24:09,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 786.6666666666666) internal successors, (2360), 3 states have internal predecessors, (2360), 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 13:24:09,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:09,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 785 of 1848 [2023-08-30 13:24:09,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:10,319 INFO L130 PetriNetUnfolder]: 111/233 cut-off events. [2023-08-30 13:24:10,319 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 13:24:10,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 233 events. 111/233 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 792 event pairs, 102 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 480. Up to 120 conditions per place. [2023-08-30 13:24:10,322 INFO L137 encePairwiseOnDemand]: 1842/1848 looper letters, 45 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-30 13:24:10,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 204 flow [2023-08-30 13:24:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:24:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:24:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2406 transitions. [2023-08-30 13:24:10,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43398268398268397 [2023-08-30 13:24:10,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2406 transitions. [2023-08-30 13:24:10,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2406 transitions. [2023-08-30 13:24:10,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:10,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2406 transitions. [2023-08-30 13:24:10,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 802.0) internal successors, (2406), 3 states have internal predecessors, (2406), 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 13:24:10,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:10,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:10,347 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 80 flow. Second operand 3 states and 2406 transitions. [2023-08-30 13:24:10,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 204 flow [2023-08-30 13:24:10,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:24:10,349 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 84 flow [2023-08-30 13:24:10,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2023-08-30 13:24:10,350 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -26 predicate places. [2023-08-30 13:24:10,351 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 84 flow [2023-08-30 13:24:10,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 786.6666666666666) internal successors, (2360), 3 states have internal predecessors, (2360), 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 13:24:10,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:10,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:24:10,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:24:10,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:10,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1369938769, now seen corresponding path program 1 times [2023-08-30 13:24:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:10,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723443499] [2023-08-30 13:24:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:10,617 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 13:24:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723443499] [2023-08-30 13:24:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723443499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:24:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:24:10,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238990541] [2023-08-30 13:24:10,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:10,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:24:10,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:10,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:24:10,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:24:10,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 788 out of 1848 [2023-08-30 13:24:10,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 790.0) internal successors, (2370), 3 states have internal predecessors, (2370), 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 13:24:10,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:10,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 788 of 1848 [2023-08-30 13:24:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:11,178 INFO L130 PetriNetUnfolder]: 111/234 cut-off events. [2023-08-30 13:24:11,178 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 13:24:11,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 234 events. 111/234 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 797 event pairs, 102 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 486. Up to 233 conditions per place. [2023-08-30 13:24:11,179 INFO L137 encePairwiseOnDemand]: 1843/1848 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-08-30 13:24:11,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 160 flow [2023-08-30 13:24:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:24:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:24:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2403 transitions. [2023-08-30 13:24:11,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2023-08-30 13:24:11,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2403 transitions. [2023-08-30 13:24:11,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2403 transitions. [2023-08-30 13:24:11,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:11,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2403 transitions. [2023-08-30 13:24:11,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.0) internal successors, (2403), 3 states have internal predecessors, (2403), 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 13:24:11,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:11,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:11,204 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 84 flow. Second operand 3 states and 2403 transitions. [2023-08-30 13:24:11,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 160 flow [2023-08-30 13:24:11,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:24:11,205 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 93 flow [2023-08-30 13:24:11,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-08-30 13:24:11,206 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -25 predicate places. [2023-08-30 13:24:11,207 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 93 flow [2023-08-30 13:24:11,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 790.0) internal successors, (2370), 3 states have internal predecessors, (2370), 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 13:24:11,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:11,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:11,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:24:11,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:11,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1940464591, now seen corresponding path program 1 times [2023-08-30 13:24:11,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:11,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245007842] [2023-08-30 13:24:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:12,153 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 13:24:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245007842] [2023-08-30 13:24:12,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245007842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:24:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:24:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593186180] [2023-08-30 13:24:12,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:12,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:24:12,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:24:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:24:12,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 787 out of 1848 [2023-08-30 13:24:12,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 789.3333333333334) internal successors, (2368), 3 states have internal predecessors, (2368), 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 13:24:12,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:12,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 787 of 1848 [2023-08-30 13:24:12,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:12,461 INFO L130 PetriNetUnfolder]: 61/130 cut-off events. [2023-08-30 13:24:12,461 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 13:24:12,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 130 events. 61/130 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 390 event pairs, 51 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 274. Up to 130 conditions per place. [2023-08-30 13:24:12,462 INFO L137 encePairwiseOnDemand]: 1844/1848 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 13:24:12,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 171 flow [2023-08-30 13:24:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:24:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:24:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2400 transitions. [2023-08-30 13:24:12,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2023-08-30 13:24:12,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2400 transitions. [2023-08-30 13:24:12,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2400 transitions. [2023-08-30 13:24:12,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:12,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2400 transitions. [2023-08-30 13:24:12,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 800.0) internal successors, (2400), 3 states have internal predecessors, (2400), 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 13:24:12,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:12,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:12,485 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 93 flow. Second operand 3 states and 2400 transitions. [2023-08-30 13:24:12,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 171 flow [2023-08-30 13:24:12,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 166 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:24:12,487 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 102 flow [2023-08-30 13:24:12,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2023-08-30 13:24:12,489 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -23 predicate places. [2023-08-30 13:24:12,489 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 102 flow [2023-08-30 13:24:12,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 789.3333333333334) internal successors, (2368), 3 states have internal predecessors, (2368), 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 13:24:12,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:12,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:24:12,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting whoop_wrapper_pc8736x_gpio_changeErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:12,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -720380223, now seen corresponding path program 1 times [2023-08-30 13:24:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551214432] [2023-08-30 13:24:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:12,816 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 13:24:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:12,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551214432] [2023-08-30 13:24:12,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551214432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:12,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:24:12,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:24:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372062562] [2023-08-30 13:24:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:24:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:24:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:24:12,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 1848 [2023-08-30 13:24:12,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 792.6666666666666) internal successors, (2378), 3 states have internal predecessors, (2378), 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 13:24:12,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:12,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 1848 [2023-08-30 13:24:12,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:13,493 INFO L130 PetriNetUnfolder]: 52/113 cut-off events. [2023-08-30 13:24:13,494 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 13:24:13,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 113 events. 52/113 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 6 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 244. Up to 68 conditions per place. [2023-08-30 13:24:13,494 INFO L137 encePairwiseOnDemand]: 1846/1848 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 13:24:13,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 195 flow [2023-08-30 13:24:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:24:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:24:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2411 transitions. [2023-08-30 13:24:13,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348845598845599 [2023-08-30 13:24:13,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2411 transitions. [2023-08-30 13:24:13,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2411 transitions. [2023-08-30 13:24:13,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:13,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2411 transitions. [2023-08-30 13:24:13,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 803.6666666666666) internal successors, (2411), 3 states have internal predecessors, (2411), 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 13:24:13,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:13,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:13,515 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 102 flow. Second operand 3 states and 2411 transitions. [2023-08-30 13:24:13,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 195 flow [2023-08-30 13:24:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 191 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 13:24:13,517 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 98 flow [2023-08-30 13:24:13,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-08-30 13:24:13,521 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -23 predicate places. [2023-08-30 13:24:13,522 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 98 flow [2023-08-30 13:24:13,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 792.6666666666666) internal successors, (2378), 3 states have internal predecessors, (2378), 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 13:24:13,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:13,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:13,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 13:24:13,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:13,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -720380551, now seen corresponding path program 1 times [2023-08-30 13:24:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11237168] [2023-08-30 13:24:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:14,205 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 13:24:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11237168] [2023-08-30 13:24:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11237168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:24:14,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628900835] [2023-08-30 13:24:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:24:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:24:14,213 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 13:24:14,242 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 13:24:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:15,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:24:15,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:24:15,310 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 13:24:15,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:24:15,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628900835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:24:15,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:24:15,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 13:24:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573653504] [2023-08-30 13:24:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:24:15,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:24:15,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:24:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:24:15,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 1848 [2023-08-30 13:24:15,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 792.6666666666666) internal successors, (2378), 3 states have internal predecessors, (2378), 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 13:24:15,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:15,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 1848 [2023-08-30 13:24:15,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:16,209 INFO L130 PetriNetUnfolder]: 43/96 cut-off events. [2023-08-30 13:24:16,210 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 13:24:16,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 96 events. 43/96 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 252 event pairs, 6 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 216. Up to 51 conditions per place. [2023-08-30 13:24:16,211 INFO L137 encePairwiseOnDemand]: 1846/1848 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 13:24:16,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 189 flow [2023-08-30 13:24:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:24:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:24:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2410 transitions. [2023-08-30 13:24:16,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4347041847041847 [2023-08-30 13:24:16,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2410 transitions. [2023-08-30 13:24:16,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2410 transitions. [2023-08-30 13:24:16,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:16,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2410 transitions. [2023-08-30 13:24:16,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 803.3333333333334) internal successors, (2410), 3 states have internal predecessors, (2410), 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 13:24:16,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:16,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 4 states have internal predecessors, (7392), 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 13:24:16,230 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 98 flow. Second operand 3 states and 2410 transitions. [2023-08-30 13:24:16,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 189 flow [2023-08-30 13:24:16,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:24:16,232 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 97 flow [2023-08-30 13:24:16,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-08-30 13:24:16,232 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -23 predicate places. [2023-08-30 13:24:16,233 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 97 flow [2023-08-30 13:24:16,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 792.6666666666666) internal successors, (2378), 3 states have internal predecessors, (2378), 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 13:24:16,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:16,248 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 13:24:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 13:24:16,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:16,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash -720380358, now seen corresponding path program 1 times [2023-08-30 13:24:16,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:16,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766746212] [2023-08-30 13:24:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:17,038 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 13:24:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766746212] [2023-08-30 13:24:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766746212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:24:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515402464] [2023-08-30 13:24:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:17,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:24:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:24:17,041 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 13:24:17,064 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 13:24:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 13:24:17,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:24:17,984 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 13:24:17,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:24:18,247 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 13:24:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515402464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:24:18,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:24:18,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 13:24:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075115374] [2023-08-30 13:24:18,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:24:18,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:24:18,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:24:18,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:24:18,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1848 [2023-08-30 13:24:18,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 784.8571428571429) internal successors, (5494), 7 states have internal predecessors, (5494), 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 13:24:18,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:18,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1848 [2023-08-30 13:24:18,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:18,787 INFO L130 PetriNetUnfolder]: 43/101 cut-off events. [2023-08-30 13:24:18,787 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 13:24:18,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 101 events. 43/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 261 event pairs, 33 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 237. Up to 96 conditions per place. [2023-08-30 13:24:18,788 INFO L137 encePairwiseOnDemand]: 1840/1848 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-30 13:24:18,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 195 flow [2023-08-30 13:24:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 13:24:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 13:24:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4748 transitions. [2023-08-30 13:24:18,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282106782106782 [2023-08-30 13:24:18,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4748 transitions. [2023-08-30 13:24:18,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4748 transitions. [2023-08-30 13:24:18,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:18,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4748 transitions. [2023-08-30 13:24:18,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 791.3333333333334) internal successors, (4748), 6 states have internal predecessors, (4748), 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 13:24:18,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1848.0) internal successors, (12936), 7 states have internal predecessors, (12936), 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 13:24:18,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1848.0) internal successors, (12936), 7 states have internal predecessors, (12936), 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 13:24:18,824 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 97 flow. Second operand 6 states and 4748 transitions. [2023-08-30 13:24:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 195 flow [2023-08-30 13:24:18,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:24:18,827 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 162 flow [2023-08-30 13:24:18,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 13:24:18,828 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -16 predicate places. [2023-08-30 13:24:18,828 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 162 flow [2023-08-30 13:24:18,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 784.8571428571429) internal successors, (5494), 7 states have internal predecessors, (5494), 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 13:24:18,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:18,830 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:18,843 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 13:24:19,040 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,SelfDestructingSolverStorable6 [2023-08-30 13:24:19,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:19,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:19,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1938527857, now seen corresponding path program 2 times [2023-08-30 13:24:19,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:19,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492899924] [2023-08-30 13:24:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:19,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:19,906 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 13:24:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492899924] [2023-08-30 13:24:19,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492899924] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:24:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110953108] [2023-08-30 13:24:19,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:24:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:24:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:24:19,908 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 13:24:19,930 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 13:24:21,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:24:21,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:24:21,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 13:24:21,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:24:21,952 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 13:24:21,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:24:22,233 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 13:24:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110953108] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:24:22,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:24:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 13:24:22,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702124652] [2023-08-30 13:24:22,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:24:22,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 13:24:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 13:24:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-08-30 13:24:22,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 781 out of 1848 [2023-08-30 13:24:22,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 162 flow. Second operand has 17 states, 17 states have (on average 782.3529411764706) internal successors, (13300), 17 states have internal predecessors, (13300), 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 13:24:22,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:22,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 781 of 1848 [2023-08-30 13:24:22,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:24:24,745 INFO L130 PetriNetUnfolder]: 43/110 cut-off events. [2023-08-30 13:24:24,745 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 13:24:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 110 events. 43/110 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 266 event pairs, 33 based on Foata normal form. 9/104 useless extension candidates. Maximal degree in co-relation 295. Up to 96 conditions per place. [2023-08-30 13:24:24,746 INFO L137 encePairwiseOnDemand]: 1840/1848 looper letters, 33 selfloop transitions, 17 changer transitions 0/50 dead transitions. [2023-08-30 13:24:24,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 310 flow [2023-08-30 13:24:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:24:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:24:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 9439 transitions. [2023-08-30 13:24:24,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256403318903319 [2023-08-30 13:24:24,769 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 9439 transitions. [2023-08-30 13:24:24,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 9439 transitions. [2023-08-30 13:24:24,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:24:24,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 9439 transitions. [2023-08-30 13:24:24,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 786.5833333333334) internal successors, (9439), 12 states have internal predecessors, (9439), 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 13:24:24,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1848.0) internal successors, (24024), 13 states have internal predecessors, (24024), 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 13:24:24,821 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1848.0) internal successors, (24024), 13 states have internal predecessors, (24024), 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 13:24:24,821 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 162 flow. Second operand 12 states and 9439 transitions. [2023-08-30 13:24:24,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 310 flow [2023-08-30 13:24:24,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 300 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 13:24:24,827 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 296 flow [2023-08-30 13:24:24,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=296, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-30 13:24:24,829 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-08-30 13:24:24,829 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 296 flow [2023-08-30 13:24:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 782.3529411764706) internal successors, (13300), 17 states have internal predecessors, (13300), 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 13:24:24,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:24:24,832 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:24:24,847 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 13:24:25,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:24:25,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:24:25,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:24:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1053404719, now seen corresponding path program 3 times [2023-08-30 13:24:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:24:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760499057] [2023-08-30 13:24:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:24:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:24:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:24:26,415 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 13:24:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:24:26,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760499057] [2023-08-30 13:24:26,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760499057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:24:26,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100073761] [2023-08-30 13:24:26,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:24:26,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:24:26,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:24:26,417 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 13:24:26,420 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 13:24:35,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 13:24:35,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:24:35,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-30 13:24:35,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:24:35,802 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 13:24:35,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:24:36,892 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 13:24:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100073761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:24:36,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:24:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-30 13:24:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660048394] [2023-08-30 13:24:36,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:24:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 13:24:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:24:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 13:24:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=870, Unknown=0, NotChecked=0, Total=1190 [2023-08-30 13:24:40,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 781 out of 1848 [2023-08-30 13:24:40,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 296 flow. Second operand has 35 states, 35 states have (on average 782.1714285714286) internal successors, (27376), 35 states have internal predecessors, (27376), 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 13:24:40,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:24:40,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 781 of 1848 [2023-08-30 13:24:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:25:03,812 WARN L222 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 67 DAG size of output: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:25:15,983 WARN L222 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 61 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:25:32,007 INFO L130 PetriNetUnfolder]: 43/128 cut-off events. [2023-08-30 13:25:32,008 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2023-08-30 13:25:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 128 events. 43/128 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 33 based on Foata normal form. 18/131 useless extension candidates. Maximal degree in co-relation 422. Up to 91 conditions per place. [2023-08-30 13:25:32,010 INFO L137 encePairwiseOnDemand]: 1840/1848 looper letters, 29 selfloop transitions, 39 changer transitions 0/68 dead transitions. [2023-08-30 13:25:32,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 68 transitions, 564 flow [2023-08-30 13:25:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 13:25:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 13:25:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 19628 transitions. [2023-08-30 13:25:32,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42484848484848486 [2023-08-30 13:25:32,047 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 19628 transitions. [2023-08-30 13:25:32,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 19628 transitions. [2023-08-30 13:25:32,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:25:32,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 19628 transitions. [2023-08-30 13:25:32,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 785.12) internal successors, (19628), 25 states have internal predecessors, (19628), 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 13:25:32,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 1848.0) internal successors, (48048), 26 states have internal predecessors, (48048), 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 13:25:32,123 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 1848.0) internal successors, (48048), 26 states have internal predecessors, (48048), 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 13:25:32,124 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 296 flow. Second operand 25 states and 19628 transitions. [2023-08-30 13:25:32,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 68 transitions, 564 flow [2023-08-30 13:25:32,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 68 transitions, 488 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-30 13:25:32,128 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 434 flow [2023-08-30 13:25:32,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=434, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2023-08-30 13:25:32,129 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 22 predicate places. [2023-08-30 13:25:32,129 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 434 flow [2023-08-30 13:25:32,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 782.1714285714286) internal successors, (27376), 35 states have internal predecessors, (27376), 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 13:25:32,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:25:32,134 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:25:32,155 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 13:25:32,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:25:32,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:25:32,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:25:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash -259280751, now seen corresponding path program 4 times [2023-08-30 13:25:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:25:32,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040727990] [2023-08-30 13:25:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:25:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:25:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:25:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:25:34,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:25:34,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040727990] [2023-08-30 13:25:34,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040727990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:25:34,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802592263] [2023-08-30 13:25:34,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:25:34,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:25:34,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:25:34,281 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 13:25:34,288 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 13:25:39,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:25:39,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:25:39,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-30 13:25:39,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:25:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:25:40,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:25:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:25:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802592263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:25:41,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:25:41,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 64 [2023-08-30 13:25:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432139187] [2023-08-30 13:25:41,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:25:41,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-08-30 13:25:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:25:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-08-30 13:25:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1198, Invalid=2962, Unknown=0, NotChecked=0, Total=4160 [2023-08-30 13:25:45,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1848 [2023-08-30 13:25:45,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 434 flow. Second operand has 65 states, 65 states have (on average 784.0923076923077) internal successors, (50966), 65 states have internal predecessors, (50966), 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 13:25:45,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:25:45,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1848 [2023-08-30 13:25:45,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:27:35,563 WARN L222 SmtUtils]: Spent 1.13m on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:27:38,460 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 21) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:27:40,482 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 20) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:27:42,496 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ 19 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:28:23,791 WARN L222 SmtUtils]: Spent 25.31s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:28:25,862 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 18) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 17) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:28:27,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 13:28:30,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 13:28:34,521 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:29:35,939 WARN L222 SmtUtils]: Spent 33.65s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:29:39,641 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_external_alloc_~size#1| 4294967296))) (and (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 8) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 14) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 5) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 1) 4294967296) .cse0) (< (mod |c_ULTIMATE.start_external_alloc_~i~0#1| 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 3) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 6) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 2) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 15) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 16) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 13) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 12) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 9) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 10) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 4) 4294967296) .cse0) (< (mod (+ |c_ULTIMATE.start_external_alloc_~i~0#1| 11) 4294967296) .cse0) (< (mod (+ 7 |c_ULTIMATE.start_external_alloc_~i~0#1|) 4294967296) .cse0))) is different from false [2023-08-30 13:30:01,048 WARN L222 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:30:25,620 WARN L222 SmtUtils]: Spent 9.34s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:30:44,524 WARN L222 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:30:57,184 WARN L222 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 13:31:17,316 INFO L130 PetriNetUnfolder]: 49/158 cut-off events. [2023-08-30 13:31:17,317 INFO L131 PetriNetUnfolder]: For 917/917 co-relation queries the response was YES. [2023-08-30 13:31:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 158 events. 49/158 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 356 event pairs, 33 based on Foata normal form. 18/161 useless extension candidates. Maximal degree in co-relation 623. Up to 111 conditions per place. [2023-08-30 13:31:17,318 INFO L137 encePairwiseOnDemand]: 1842/1848 looper letters, 42 selfloop transitions, 56 changer transitions 0/98 dead transitions. [2023-08-30 13:31:17,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 98 transitions, 966 flow [2023-08-30 13:31:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 13:31:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 13:31:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 37714 transitions. [2023-08-30 13:31:17,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42516684704184704 [2023-08-30 13:31:17,362 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 37714 transitions. [2023-08-30 13:31:17,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 37714 transitions. [2023-08-30 13:31:17,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:31:17,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 37714 transitions. [2023-08-30 13:31:17,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 785.7083333333334) internal successors, (37714), 48 states have internal predecessors, (37714), 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 13:31:17,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 1848.0) internal successors, (90552), 49 states have internal predecessors, (90552), 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 13:31:17,488 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 1848.0) internal successors, (90552), 49 states have internal predecessors, (90552), 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 13:31:17,489 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 434 flow. Second operand 48 states and 37714 transitions. [2023-08-30 13:31:17,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 98 transitions, 966 flow [2023-08-30 13:31:17,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 98 transitions, 559 flow, removed 174 selfloop flow, removed 17 redundant places. [2023-08-30 13:31:17,494 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 585 flow [2023-08-30 13:31:17,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1848, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=585, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2023-08-30 13:31:17,495 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 76 predicate places. [2023-08-30 13:31:17,495 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 585 flow [2023-08-30 13:31:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 784.0923076923077) internal successors, (50966), 65 states have internal predecessors, (50966), 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 13:31:17,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:31:17,502 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:31:17,525 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 13:31:17,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 13:31:17,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting whoop_wrapper_pc8736x_gpio_changeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 13:31:17,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:31:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash -8374446, now seen corresponding path program 1 times [2023-08-30 13:31:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:31:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335172168] [2023-08-30 13:31:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:31:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:31:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:31:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:31:19,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:31:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335172168] [2023-08-30 13:31:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335172168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:31:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218478139] [2023-08-30 13:31:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:31:19,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:31:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:31:19,887 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 13:31:19,888 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 13:31:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:31:24,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-30 13:31:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:31:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:31:25,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:31:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:31:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218478139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:31:26,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:31:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 75 [2023-08-30 13:31:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828577255] [2023-08-30 13:31:26,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:31:26,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-08-30 13:31:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:31:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-08-30 13:31:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1468, Invalid=4232, Unknown=0, NotChecked=0, Total=5700 Killed by 15