./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc093ebb342e6e2aeac5659b7fad110e8a742c2f2123ff4689086ab884a6098d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:18:12,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:18:12,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:18:12,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:18:12,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:18:12,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:18:12,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:18:12,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:18:12,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:18:12,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:18:12,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:18:12,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:18:12,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:18:12,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:18:12,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:18:12,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:18:12,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:18:12,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:18:12,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:18:12,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:18:12,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:18:12,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:18:12,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:18:12,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:18:12,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:18:12,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:18:12,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:18:12,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:18:12,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:18:12,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:18:12,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:18:12,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:18:12,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:18:12,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:18:12,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:18:12,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:18:12,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:18:12,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:18:12,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:18:12,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:18:12,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:18:12,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:18:12,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:18:12,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:18:12,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:18:12,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:18:12,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:18:12,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:18:12,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:18:12,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:18:12,241 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:18:12,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:18:12,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:18:12,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:18:12,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:18:12,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:18:12,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:18:12,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:18:12,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:18:12,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:18:12,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:18:12,245 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:18:12,246 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc093ebb342e6e2aeac5659b7fad110e8a742c2f2123ff4689086ab884a6098d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:18:12,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:18:12,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:18:12,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:18:12,487 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:18:12,488 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:18:12,488 INFO L432 ainManager$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_get.i [2023-08-30 17:18:13,466 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:18:13,835 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:18:13,835 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-driver-races/char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i [2023-08-30 17:18:13,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c1c57c7/3e9770ebdf7e4a7d8f6a439563e94a9c/FLAGea8321ff9 [2023-08-30 17:18:13,889 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c1c57c7/3e9770ebdf7e4a7d8f6a439563e94a9c [2023-08-30 17:18:13,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:18:13,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:18:13,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:18:13,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:18:13,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:18:13,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:13" (1/1) ... [2023-08-30 17:18:13,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265213ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:13, skipping insertion in model container [2023-08-30 17:18:13,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:13" (1/1) ... [2023-08-30 17:18:13,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:18:13,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:18:14,207 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_get.i[5469,5482] [2023-08-30 17:18:15,835 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:18:16,206 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:16,206 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:16,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:18:16,259 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:18:16,271 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_get.i[5469,5482] [2023-08-30 17:18:16,389 WARN L633 FunctionHandler]: implicit declaration of function __builtin_constant_p [2023-08-30 17:18:16,425 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:16,425 WARN L1562 CHandler]: Possible shadowing of function iminor [2023-08-30 17:18:16,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:18:16,841 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function __builtin_constant_p is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function ____ilog2_NaN is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,842 WARN L667 CHandler]: The function _whoop_init is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 17:18:16,847 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:18:16,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16 WrapperNode [2023-08-30 17:18:16,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:18:16,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:18:16,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:18:16,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:18:16,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:16,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,008 INFO L138 Inliner]: procedures = 1394, calls = 1531, calls flagged for inlining = 392, calls inlined = 54, statements flattened = 726 [2023-08-30 17:18:17,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:18:17,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:18:17,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:18:17,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:18:17,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:18:17,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:18:17,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:18:17,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:18:17,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (1/1) ... [2023-08-30 17:18:17,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:18:17,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:18:17,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 17:18:17,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 17:18:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:18:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 17:18:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:18:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:18:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:18:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:18:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure whoop_wrapper_pc8736x_gpio_get [2023-08-30 17:18:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure whoop_wrapper_pc8736x_gpio_get [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:18:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:18:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 17:18:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:18:17,218 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:18:17,589 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:18:17,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:18:18,132 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:18:18,139 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:18:18,140 INFO L302 CfgBuilder]: Removed 27 assume(true) statements. [2023-08-30 17:18:18,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:18 BoogieIcfgContainer [2023-08-30 17:18:18,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:18:18,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:18:18,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:18:18,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:18:18,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:18:13" (1/3) ... [2023-08-30 17:18:18,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ed9b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:18, skipping insertion in model container [2023-08-30 17:18:18,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:16" (2/3) ... [2023-08-30 17:18:18,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ed9b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:18, skipping insertion in model container [2023-08-30 17:18:18,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:18" (3/3) ... [2023-08-30 17:18:18,147 INFO L112 eAbstractionObserver]: Analyzing ICFG char_pc8736x_gpio_pc8736x_gpio_change_pc8736x_gpio_get.i [2023-08-30 17:18:18,151 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:18:18,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:18:18,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 17:18:18,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:18:18,248 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:18:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 744 places, 792 transitions, 1600 flow [2023-08-30 17:18:18,445 INFO L130 PetriNetUnfolder]: 55/790 cut-off events. [2023-08-30 17:18:18,445 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:18:18,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 790 events. 55/790 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1086 event pairs, 0 based on Foata normal form. 0/732 useless extension candidates. Maximal degree in co-relation 633. Up to 9 conditions per place. [2023-08-30 17:18:18,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 744 places, 792 transitions, 1600 flow [2023-08-30 17:18:18,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 734 places, 782 transitions, 1573 flow [2023-08-30 17:18:18,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:18:18,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 734 places, 782 transitions, 1573 flow [2023-08-30 17:18:18,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 734 places, 782 transitions, 1573 flow [2023-08-30 17:18:18,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 734 places, 782 transitions, 1573 flow [2023-08-30 17:18:18,575 INFO L130 PetriNetUnfolder]: 55/782 cut-off events. [2023-08-30 17:18:18,575 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:18:18,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 782 events. 55/782 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1022 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 633. Up to 9 conditions per place. [2023-08-30 17:18:18,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 13356 [2023-08-30 17:19:22,983 WARN L222 SmtUtils]: Spent 14.06s on a formula simplification that was a NOOP. DAG size: 366 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:31,104 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 324 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:46,563 WARN L222 SmtUtils]: Spent 15.46s on a formula simplification that was a NOOP. DAG size: 369 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:19:53,858 WARN L222 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 327 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:20:54,923 WARN L222 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 583 DAG size of output: 581 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:21:25,175 WARN L222 SmtUtils]: Spent 30.25s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:22:29,579 WARN L222 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 586 DAG size of output: 584 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:23:02,104 WARN L222 SmtUtils]: Spent 32.52s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 17:23:19,496 INFO L134 LiptonReduction]: Checked pairs total: 10608 [2023-08-30 17:23:19,496 INFO L136 LiptonReduction]: Total number of compositions: 869 [2023-08-30 17:23:19,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:23:19,508 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;@2d0d28ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:23:19,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 17:23:19,513 INFO L130 PetriNetUnfolder]: 2/5 cut-off events. [2023-08-30 17:23:19,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:23:19,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:23:19,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 17:23:19,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:23:19,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:23:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2907106, now seen corresponding path program 1 times [2023-08-30 17:23:19,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:23:19,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227567533] [2023-08-30 17:23:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:23:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:23:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:23:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:23:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227567533] [2023-08-30 17:23:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227567533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:23:19,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:23:19,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:23:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703414478] [2023-08-30 17:23:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:23:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:23:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:23:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:23:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:23:19,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 1661 [2023-08-30 17:23:19,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 49 transitions, 107 flow. Second operand has 2 states, 2 states have (on average 755.5) internal successors, (1511), 2 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:19,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:23:19,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 1661 [2023-08-30 17:23:19,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:23:20,136 INFO L130 PetriNetUnfolder]: 61/127 cut-off events. [2023-08-30 17:23:20,136 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 17:23:20,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 127 events. 61/127 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 51 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 170. Up to 128 conditions per place. [2023-08-30 17:23:20,137 INFO L137 encePairwiseOnDemand]: 1647/1661 looper letters, 34 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2023-08-30 17:23:20,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 149 flow [2023-08-30 17:23:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:23:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:23:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1557 transitions. [2023-08-30 17:23:20,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686935580975316 [2023-08-30 17:23:20,152 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1557 transitions. [2023-08-30 17:23:20,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1557 transitions. [2023-08-30 17:23:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:23:20,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1557 transitions. [2023-08-30 17:23:20,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 778.5) internal successors, (1557), 2 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:20,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1661.0) internal successors, (4983), 3 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:20,169 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1661.0) internal successors, (4983), 3 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:20,170 INFO L175 Difference]: Start difference. First operand has 34 places, 49 transitions, 107 flow. Second operand 2 states and 1557 transitions. [2023-08-30 17:23:20,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 149 flow [2023-08-30 17:23:20,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:23:20,174 INFO L231 Difference]: Finished difference. Result has 30 places, 34 transitions, 72 flow [2023-08-30 17:23:20,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=34} [2023-08-30 17:23:20,177 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 17:23:20,177 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 34 transitions, 72 flow [2023-08-30 17:23:20,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 755.5) internal successors, (1511), 2 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:20,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:23:20,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:23:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:23:20,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:23:20,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:23:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1199790467, now seen corresponding path program 1 times [2023-08-30 17:23:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:23:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019864500] [2023-08-30 17:23:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:23:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:23:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:23:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:23:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019864500] [2023-08-30 17:23:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019864500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:23:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:23:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:23:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991272090] [2023-08-30 17:23:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:23:21,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:23:21,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:23:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:23:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:23:21,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 746 out of 1661 [2023-08-30 17:23:21,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:21,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:23:21,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 746 of 1661 [2023-08-30 17:23:21,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:23:21,624 INFO L130 PetriNetUnfolder]: 52/111 cut-off events. [2023-08-30 17:23:21,624 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 17:23:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 111 events. 52/111 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 42 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 229. Up to 111 conditions per place. [2023-08-30 17:23:21,625 INFO L137 encePairwiseOnDemand]: 1657/1661 looper letters, 33 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 17:23:21,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 144 flow [2023-08-30 17:23:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:23:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:23:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2275 transitions. [2023-08-30 17:23:21,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565522777443307 [2023-08-30 17:23:21,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2275 transitions. [2023-08-30 17:23:21,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2275 transitions. [2023-08-30 17:23:21,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:23:21,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2275 transitions. [2023-08-30 17:23:21,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 758.3333333333334) internal successors, (2275), 3 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:21,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:21,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:21,675 INFO L175 Difference]: Start difference. First operand has 30 places, 34 transitions, 72 flow. Second operand 3 states and 2275 transitions. [2023-08-30 17:23:21,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 144 flow [2023-08-30 17:23:21,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:23:21,677 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 86 flow [2023-08-30 17:23:21,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2023-08-30 17:23:21,677 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-30 17:23:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 86 flow [2023-08-30 17:23:21,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:21,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:23:21,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:23:21,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:23:21,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:23:21,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:23:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1010626989, now seen corresponding path program 1 times [2023-08-30 17:23:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:23:21,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229217076] [2023-08-30 17:23:21,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:23:21,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:23:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:23:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:23:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229217076] [2023-08-30 17:23:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229217076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:23:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357488774] [2023-08-30 17:23:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:23:22,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:23:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:23:22,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:23:22,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 17:23:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:23:23,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 17:23:23,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:23:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:23,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 17:23:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357488774] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 17:23:23,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 17:23:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 17:23:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648853896] [2023-08-30 17:23:23,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 17:23:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 17:23:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:23:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 17:23:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:23:23,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 1661 [2023-08-30 17:23:23,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 86 flow. Second operand has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:23,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:23:23,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 1661 [2023-08-30 17:23:23,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:23:24,085 INFO L130 PetriNetUnfolder]: 52/116 cut-off events. [2023-08-30 17:23:24,085 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 17:23:24,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 116 events. 52/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 42 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 248. Up to 106 conditions per place. [2023-08-30 17:23:24,086 INFO L137 encePairwiseOnDemand]: 1653/1661 looper letters, 28 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-08-30 17:23:24,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 182 flow [2023-08-30 17:23:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:23:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:23:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5244 transitions. [2023-08-30 17:23:24,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510191794960007 [2023-08-30 17:23:24,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5244 transitions. [2023-08-30 17:23:24,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5244 transitions. [2023-08-30 17:23:24,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:23:24,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5244 transitions. [2023-08-30 17:23:24,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 749.1428571428571) internal successors, (5244), 7 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:24,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1661.0) internal successors, (13288), 8 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:24,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1661.0) internal successors, (13288), 8 states have internal predecessors, (13288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:24,124 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 86 flow. Second operand 7 states and 5244 transitions. [2023-08-30 17:23:24,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 182 flow [2023-08-30 17:23:24,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 178 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 17:23:24,125 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 126 flow [2023-08-30 17:23:24,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-08-30 17:23:24,126 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 17:23:24,126 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 126 flow [2023-08-30 17:23:24,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:24,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:23:24,128 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:23:24,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 17:23:24,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:23:24,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:23:24,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:23:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1966937091, now seen corresponding path program 2 times [2023-08-30 17:23:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:23:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215306789] [2023-08-30 17:23:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:23:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:23:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:23:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:23:25,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:23:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215306789] [2023-08-30 17:23:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215306789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 17:23:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749853150] [2023-08-30 17:23:25,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:23:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 17:23:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:23:25,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 17:23:25,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 17:23:26,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:23:26,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:23:26,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 17:23:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:23:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 17:23:26,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:23:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749853150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:23:26,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 17:23:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 17:23:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516118347] [2023-08-30 17:23:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:23:26,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:23:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:23:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:23:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 17:23:26,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 1661 [2023-08-30 17:23:26,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 753.3333333333334) internal successors, (2260), 3 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:26,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:23:26,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 1661 [2023-08-30 17:23:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:23:26,943 INFO L130 PetriNetUnfolder]: 43/99 cut-off events. [2023-08-30 17:23:26,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 17:23:26,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 99 events. 43/99 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 15 based on Foata normal form. 8/98 useless extension candidates. Maximal degree in co-relation 226. Up to 66 conditions per place. [2023-08-30 17:23:26,944 INFO L137 encePairwiseOnDemand]: 1657/1661 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-30 17:23:26,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 223 flow [2023-08-30 17:23:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:23:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:23:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2289 transitions. [2023-08-30 17:23:26,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593618302227574 [2023-08-30 17:23:26,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2289 transitions. [2023-08-30 17:23:26,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2289 transitions. [2023-08-30 17:23:26,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:23:26,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2289 transitions. [2023-08-30 17:23:26,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 763.0) internal successors, (2289), 3 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:26,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:26,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1661.0) internal successors, (6644), 4 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:26,968 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 126 flow. Second operand 3 states and 2289 transitions. [2023-08-30 17:23:26,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 223 flow [2023-08-30 17:23:26,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 200 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 17:23:26,970 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-30 17:23:26,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1661, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-30 17:23:26,971 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-08-30 17:23:26,971 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-30 17:23:26,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 753.3333333333334) internal successors, (2260), 3 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:23:26,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 17:23:26,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-08-30 17:23:26,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 17:23:26,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-30 17:23:26,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-30 17:23:26,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-30 17:23:26,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location whoop_wrapper_pc8736x_gpio_changeErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 17:23:26,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:23:27,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 17:23:27,185 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-30 17:23:27,189 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:23:27,189 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:23:27,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:23:27 BasicIcfg [2023-08-30 17:23:27,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:23:27,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:23:27,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:23:27,193 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:23:27,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:18" (3/4) ... [2023-08-30 17:23:27,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 17:23:27,198 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_pc8736x_gpio_change [2023-08-30 17:23:27,198 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure whoop_wrapper_pc8736x_gpio_get [2023-08-30 17:23:27,213 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 94 nodes and edges [2023-08-30 17:23:27,214 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-30 17:23:27,215 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-08-30 17:23:27,215 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 17:23:27,293 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:23:27,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:23:27,294 INFO L158 Benchmark]: Toolchain (without parser) took 313401.65ms. Allocated memory was 81.8MB in the beginning and 419.4MB in the end (delta: 337.6MB). Free memory was 48.5MB in the beginning and 163.6MB in the end (delta: -115.1MB). Peak memory consumption was 220.9MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,294 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:23:27,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2971.06ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 48.3MB in the beginning and 68.0MB in the end (delta: -19.7MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.56ms. Allocated memory is still 123.7MB. Free memory was 68.0MB in the beginning and 56.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,294 INFO L158 Benchmark]: Boogie Preprocessor took 70.50ms. Allocated memory is still 123.7MB. Free memory was 56.7MB in the beginning and 51.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,294 INFO L158 Benchmark]: RCFGBuilder took 1061.19ms. Allocated memory was 123.7MB in the beginning and 228.6MB in the end (delta: 104.9MB). Free memory was 51.2MB in the beginning and 165.8MB in the end (delta: -114.6MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,295 INFO L158 Benchmark]: TraceAbstraction took 309049.04ms. Allocated memory was 228.6MB in the beginning and 419.4MB in the end (delta: 190.8MB). Free memory was 164.7MB in the beginning and 172.5MB in the end (delta: -7.8MB). Peak memory consumption was 183.6MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,295 INFO L158 Benchmark]: Witness Printer took 100.86ms. Allocated memory is still 419.4MB. Free memory was 172.5MB in the beginning and 163.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 17:23:27,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 40.9MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2971.06ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 48.3MB in the beginning and 68.0MB in the end (delta: -19.7MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.56ms. Allocated memory is still 123.7MB. Free memory was 68.0MB in the beginning and 56.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.50ms. Allocated memory is still 123.7MB. Free memory was 56.7MB in the beginning and 51.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1061.19ms. Allocated memory was 123.7MB in the beginning and 228.6MB in the end (delta: 104.9MB). Free memory was 51.2MB in the beginning and 165.8MB in the end (delta: -114.6MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * TraceAbstraction took 309049.04ms. Allocated memory was 228.6MB in the beginning and 419.4MB in the end (delta: 190.8MB). Free memory was 164.7MB in the beginning and 172.5MB in the end (delta: -7.8MB). Peak memory consumption was 183.6MB. Max. memory is 16.1GB. * Witness Printer took 100.86ms. Allocated memory is still 419.4MB. Free memory was 172.5MB in the beginning and 163.6MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 301.0s, 734 PlacesBefore, 34 PlacesAfterwards, 782 TransitionsBefore, 49 TransitionsAfterwards, 13356 CoEnabledTransitionPairs, 10 FixpointIterations, 558 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 79 TrivialYvCompositions, 31 ConcurrentYvCompositions, 33 ChoiceCompositions, 869 TotalNumberOfCompositions, 10608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10243, independent: 10214, independent conditional: 0, independent unconditional: 10214, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7019, independent: 7005, independent conditional: 0, independent unconditional: 7005, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10243, independent: 3209, independent conditional: 0, independent unconditional: 3209, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 7019, unknown conditional: 0, unknown unconditional: 7019] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 174]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 906 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 308.9s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 301.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 455 IncrementalHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 5 mSDtfsCounter, 455 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 58 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 1 QuantifiedInterpolants, 274 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2277 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 10/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 17:23:27,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE