/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 08:52:16,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 08:52:16,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 08:52:16,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 08:52:16,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 08:52:16,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 08:52:16,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 08:52:16,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 08:52:16,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 08:52:16,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 08:52:16,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 08:52:16,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 08:52:16,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 08:52:16,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 08:52:16,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 08:52:16,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 08:52:16,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 08:52:16,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 08:52:16,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 08:52:16,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 08:52:16,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 08:52:16,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 08:52:16,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 08:52:16,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 08:52:16,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 08:52:16,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 08:52:16,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 08:52:16,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 08:52:16,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 08:52:16,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 08:52:16,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 08:52:16,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 08:52:16,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 08:52:16,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 08:52:16,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 08:52:16,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 08:52:16,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 08:52:16,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 08:52:16,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 08:52:16,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 08:52:16,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 08:52:16,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 08:52:16,423 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 08:52:16,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 08:52:16,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 08:52:16,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 08:52:16,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 08:52:16,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 08:52:16,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 08:52:16,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 08:52:16,426 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 08:52:16,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 08:52:16,427 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 08:52:16,428 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 08:52:16,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 08:52:16,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 08:52:16,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 08:52:16,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 08:52:16,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 08:52:16,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 08:52:16,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 08:52:16,430 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 08:52:16,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 08:52:16,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 08:52:16,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 08:52:16,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 08:52:16,700 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 08:52:16,700 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 08:52:16,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-02 08:52:17,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 08:52:18,241 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 08:52:18,242 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-02 08:52:18,280 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9ac700d/503d17a9a2b2416db479fc9c521d6f9b/FLAGf98eff88d [2023-04-02 08:52:18,295 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a9ac700d/503d17a9a2b2416db479fc9c521d6f9b [2023-04-02 08:52:18,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 08:52:18,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 08:52:18,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 08:52:18,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 08:52:18,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 08:52:18,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 08:52:18" (1/1) ... [2023-04-02 08:52:18,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18461f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:18, skipping insertion in model container [2023-04-02 08:52:18,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 08:52:18" (1/1) ... [2023-04-02 08:52:18,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 08:52:18,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 08:52:18,798 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-04-02 08:52:18,799 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-04-02 08:52:19,258 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-04-02 08:52:20,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 08:52:20,194 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 08:52:20,264 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-04-02 08:52:20,264 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-04-02 08:52:20,276 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-04-02 08:52:20,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 08:52:20,483 INFO L208 MainTranslator]: Completed translation [2023-04-02 08:52:20,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20 WrapperNode [2023-04-02 08:52:20,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 08:52:20,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 08:52:20,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 08:52:20,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 08:52:20,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 08:52:20,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 08:52:20,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 08:52:20,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 08:52:20,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (1/1) ... [2023-04-02 08:52:20,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 08:52:20,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:52:20,853 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) [2023-04-02 08:52:20,877 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 [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-04-02 08:52:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_1 [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_4 [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_5 [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_7 [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-02 08:52:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmalloc_12 [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kcalloc_14 [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-02 08:52:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_assign_page [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_virt [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_type [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-04-02 08:52:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-04-02 08:52:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-04-02 08:52:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-04-02 08:52:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-04-02 08:52:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-04-02 08:52:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-04-02 08:52:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-04-02 08:52:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-04-02 08:52:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2023-04-02 08:52:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure get_endpoints [2023-04-02 08:52:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_callback [2023-04-02 08:52:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2023-04-02 08:52:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2023-04-02 08:52:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2023-04-02 08:52:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2023-04-02 08:52:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2023-04-02 08:52:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2023-04-02 08:52:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2023-04-02 08:52:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2023-04-02 08:52:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2023-04-02 08:52:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2023-04-02 08:52:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2023-04-02 08:52:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure get_altsetting [2023-04-02 08:52:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2023-04-02 08:52:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2023-04-02 08:52:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ext [2023-04-02 08:52:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_ss_cap [2023-04-02 08:52:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_con_id [2023-04-02 08:52:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ch9_postconfig [2023-04-02 08:52:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_complete [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ctrl_queue [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1_callback [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued_callback [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_queued [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_halted [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure halt_simple [2023-04-02 08:52:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_callback [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure iso_alloc_urb [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_probe [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_suspend [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_resume [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_init [2023-04-02 08:52:20,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_exit [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_19 [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_20 [2023-04-02 08:52:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_21 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_26 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_27 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_30 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_coherent_31 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2023-04-02 08:52:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_33 [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_34 [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-04-02 08:52:20,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __virt_addr_valid [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-04-02 08:52:20,953 INFO L138 BoogieDeclarations]: Found implementation of procedure completion_done [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-02 08:52:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2023-04-02 08:52:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_init [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_sg_wait [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_speed_string [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-02 08:52:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-02 08:52:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __virt_addr_valid [2023-04-02 08:52:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_1 [2023-04-02 08:52:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_4 [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_5 [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_7 [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-02 08:52:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure completion_done [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-02 08:52:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2023-04-02 08:52:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmalloc_12 [2023-04-02 08:52:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kcalloc_14 [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 08:52:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-02 08:52:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_assign_page [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_virt [2023-04-02 08:52:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2023-04-02 08:52:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_type [2023-04-02 08:52:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-04-02 08:52:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-04-02 08:52:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_speed_string [2023-04-02 08:52:20,966 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-04-02 08:52:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-04-02 08:52:20,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-04-02 08:52:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_33 [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_34 [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_19 [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_27 [2023-04-02 08:52:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_30 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_21 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_20 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_26 [2023-04-02 08:52:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_coherent_31 [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_init [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_sg_wait [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure get_endpoints [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure simple_callback [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2023-04-02 08:52:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure get_altsetting [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ext [2023-04-02 08:52:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_ss_cap [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_con_id [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure ch9_postconfig [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_complete [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure test_ctrl_queue [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1_callback [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued_callback [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_queued [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure verify_halted [2023-04-02 08:52:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure halt_simple [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure iso_callback [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure iso_alloc_urb [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_probe [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_suspend [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_resume [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_init [2023-04-02 08:52:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_exit [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 08:52:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 08:52:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 08:52:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 08:52:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 08:52:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 08:52:21,589 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 08:52:21,597 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 08:52:21,964 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-02 08:52:24,822 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 08:52:24,848 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 08:52:24,849 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 08:52:24,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 08:52:24 BoogieIcfgContainer [2023-04-02 08:52:24,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 08:52:24,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 08:52:24,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 08:52:24,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 08:52:24,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 08:52:18" (1/3) ... [2023-04-02 08:52:24,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c0de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 08:52:24, skipping insertion in model container [2023-04-02 08:52:24,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:52:20" (2/3) ... [2023-04-02 08:52:24,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c0de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 08:52:24, skipping insertion in model container [2023-04-02 08:52:24,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 08:52:24" (3/3) ... [2023-04-02 08:52:24,861 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-04-02 08:52:24,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 08:52:24,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 08:52:24,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 08:52:24,975 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;@63ec082, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 08:52:24,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 08:52:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 1963 states, 1353 states have (on average 1.3680709534368072) internal successors, (1851), 1371 states have internal predecessors, (1851), 448 states have call successors, (448), 151 states have call predecessors, (448), 150 states have return successors, (445), 442 states have call predecessors, (445), 445 states have call successors, (445) [2023-04-02 08:52:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 08:52:24,996 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:52:24,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:52:24,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:52:25,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:52:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1286402202, now seen corresponding path program 1 times [2023-04-02 08:52:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:52:25,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937693212] [2023-04-02 08:52:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:52:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:52:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:52:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:52:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 08:52:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 08:52:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 08:52:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 08:52:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 08:52:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:52:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937693212] [2023-04-02 08:52:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937693212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:52:25,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:52:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 08:52:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280232539] [2023-04-02 08:52:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:52:25,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 08:52:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:52:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 08:52:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 08:52:25,976 INFO L87 Difference]: Start difference. First operand has 1963 states, 1353 states have (on average 1.3680709534368072) internal successors, (1851), 1371 states have internal predecessors, (1851), 448 states have call successors, (448), 151 states have call predecessors, (448), 150 states have return successors, (445), 442 states have call predecessors, (445), 445 states have call successors, (445) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 08:52:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:52:41,414 INFO L93 Difference]: Finished difference Result 4155 states and 6080 transitions. [2023-04-02 08:52:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 08:52:41,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2023-04-02 08:52:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:52:41,466 INFO L225 Difference]: With dead ends: 4155 [2023-04-02 08:52:41,466 INFO L226 Difference]: Without dead ends: 2282 [2023-04-02 08:52:41,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-02 08:52:41,498 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 3681 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 7172 mSolverCounterSat, 2052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3894 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 9224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2052 IncrementalHoareTripleChecker+Valid, 7172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-04-02 08:52:41,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3894 Valid, 1447 Invalid, 9224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2052 Valid, 7172 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-04-02 08:52:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-04-02 08:52:42,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1816. [2023-04-02 08:52:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1262 states have (on average 1.3510301109350238) internal successors, (1705), 1273 states have internal predecessors, (1705), 413 states have call successors, (413), 143 states have call predecessors, (413), 140 states have return successors, (411), 406 states have call predecessors, (411), 411 states have call successors, (411) [2023-04-02 08:52:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2529 transitions. [2023-04-02 08:52:42,128 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2529 transitions. Word has length 48 [2023-04-02 08:52:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:52:42,130 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 2529 transitions. [2023-04-02 08:52:42,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 08:52:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2529 transitions. [2023-04-02 08:52:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 08:52:42,139 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:52:42,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:52:42,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 08:52:42,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:52:42,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:52:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2016865392, now seen corresponding path program 1 times [2023-04-02 08:52:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:52:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80013922] [2023-04-02 08:52:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:52:42,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:52:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:52:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:52:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 08:52:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 08:52:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 08:52:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 08:52:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 08:52:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:52:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:52:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:52:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 08:52:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:52:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 08:52:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:52:42,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80013922] [2023-04-02 08:52:42,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80013922] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:52:42,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:52:42,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 08:52:42,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387349] [2023-04-02 08:52:42,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:52:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 08:52:42,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:52:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 08:52:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-04-02 08:52:42,768 INFO L87 Difference]: Start difference. First operand 1816 states and 2529 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-04-02 08:52:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:52:59,414 INFO L93 Difference]: Finished difference Result 2271 states and 3274 transitions. [2023-04-02 08:52:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 08:52:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 84 [2023-04-02 08:52:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:52:59,430 INFO L225 Difference]: With dead ends: 2271 [2023-04-02 08:52:59,431 INFO L226 Difference]: Without dead ends: 2268 [2023-04-02 08:52:59,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-04-02 08:52:59,435 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 4169 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 9782 mSolverCounterSat, 2584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4386 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 12366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2584 IncrementalHoareTripleChecker+Valid, 9782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-04-02 08:52:59,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4386 Valid, 1566 Invalid, 12366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2584 Valid, 9782 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-04-02 08:52:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2023-04-02 08:52:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 1817. [2023-04-02 08:52:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1263 states have (on average 1.3507521773555027) internal successors, (1706), 1274 states have internal predecessors, (1706), 413 states have call successors, (413), 143 states have call predecessors, (413), 140 states have return successors, (411), 406 states have call predecessors, (411), 411 states have call successors, (411) [2023-04-02 08:52:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2530 transitions. [2023-04-02 08:52:59,903 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2530 transitions. Word has length 84 [2023-04-02 08:52:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:52:59,903 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 2530 transitions. [2023-04-02 08:52:59,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (16), 8 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-04-02 08:52:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2530 transitions. [2023-04-02 08:52:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 08:52:59,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:52:59,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:52:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 08:52:59,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:52:59,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:52:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1124466981, now seen corresponding path program 1 times [2023-04-02 08:52:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:52:59,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27904336] [2023-04-02 08:52:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:52:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:52:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:53:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:53:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 08:53:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 08:53:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 08:53:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 08:53:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 08:53:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:53:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:53:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:53:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 08:53:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 08:53:00,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:00,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27904336] [2023-04-02 08:53:00,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27904336] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:00,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:00,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 08:53:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394096412] [2023-04-02 08:53:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:00,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 08:53:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 08:53:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-04-02 08:53:00,782 INFO L87 Difference]: Start difference. First operand 1817 states and 2530 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 08:53:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:16,011 INFO L93 Difference]: Finished difference Result 4090 states and 5897 transitions. [2023-04-02 08:53:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 08:53:16,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2023-04-02 08:53:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:16,029 INFO L225 Difference]: With dead ends: 4090 [2023-04-02 08:53:16,029 INFO L226 Difference]: Without dead ends: 2307 [2023-04-02 08:53:16,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-04-02 08:53:16,038 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 6147 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 7073 mSolverCounterSat, 3884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6199 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 10957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3884 IncrementalHoareTripleChecker+Valid, 7073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:16,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6199 Valid, 1267 Invalid, 10957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3884 Valid, 7073 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-04-02 08:53:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2023-04-02 08:53:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 1853. [2023-04-02 08:53:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1287 states have (on average 1.3465423465423465) internal successors, (1733), 1298 states have internal predecessors, (1733), 417 states have call successors, (417), 151 states have call predecessors, (417), 148 states have return successors, (415), 410 states have call predecessors, (415), 415 states have call successors, (415) [2023-04-02 08:53:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2565 transitions. [2023-04-02 08:53:16,467 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2565 transitions. Word has length 86 [2023-04-02 08:53:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:16,467 INFO L495 AbstractCegarLoop]: Abstraction has 1853 states and 2565 transitions. [2023-04-02 08:53:16,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (16), 9 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-02 08:53:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2565 transitions. [2023-04-02 08:53:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-04-02 08:53:16,477 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:16,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:16,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 08:53:16,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:16,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -31222108, now seen corresponding path program 1 times [2023-04-02 08:53:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306985692] [2023-04-02 08:53:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:16,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306985692] [2023-04-02 08:53:16,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864221554] [2023-04-02 08:53:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:16,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:16,622 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) [2023-04-02 08:53:16,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 08:53:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:17,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:17,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 08:53:17,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864221554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:17,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:17,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427268676] [2023-04-02 08:53:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:17,396 INFO L87 Difference]: Start difference. First operand 1853 states and 2565 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 08:53:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:18,048 INFO L93 Difference]: Finished difference Result 3673 states and 5098 transitions. [2023-04-02 08:53:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:18,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 226 [2023-04-02 08:53:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:18,059 INFO L225 Difference]: With dead ends: 3673 [2023-04-02 08:53:18,059 INFO L226 Difference]: Without dead ends: 1854 [2023-04-02 08:53:18,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:18,067 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 0 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:18,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2023-04-02 08:53:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2023-04-02 08:53:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1288 states have (on average 1.3462732919254659) internal successors, (1734), 1299 states have internal predecessors, (1734), 417 states have call successors, (417), 151 states have call predecessors, (417), 148 states have return successors, (415), 410 states have call predecessors, (415), 415 states have call successors, (415) [2023-04-02 08:53:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2566 transitions. [2023-04-02 08:53:18,520 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2566 transitions. Word has length 226 [2023-04-02 08:53:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:18,520 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 2566 transitions. [2023-04-02 08:53:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 08:53:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2566 transitions. [2023-04-02 08:53:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-04-02 08:53:18,530 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:18,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:18,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:18,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:18,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:18,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1137667530, now seen corresponding path program 1 times [2023-04-02 08:53:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213933923] [2023-04-02 08:53:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:18,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:18,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213933923] [2023-04-02 08:53:18,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328648353] [2023-04-02 08:53:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:18,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:18,903 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) [2023-04-02 08:53:18,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 08:53:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:19,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:19,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 08:53:19,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328648353] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:19,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:19,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:19,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028889209] [2023-04-02 08:53:19,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:19,777 INFO L87 Difference]: Start difference. First operand 1854 states and 2566 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-02 08:53:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:20,380 INFO L93 Difference]: Finished difference Result 3793 states and 5234 transitions. [2023-04-02 08:53:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:20,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 225 [2023-04-02 08:53:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:20,393 INFO L225 Difference]: With dead ends: 3793 [2023-04-02 08:53:20,393 INFO L226 Difference]: Without dead ends: 1973 [2023-04-02 08:53:20,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:20,400 INFO L413 NwaCegarLoop]: 2488 mSDtfsCounter, 365 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:20,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 4682 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 08:53:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2023-04-02 08:53:20,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1952. [2023-04-02 08:53:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1362 states have (on average 1.339941262848752) internal successors, (1825), 1373 states have internal predecessors, (1825), 425 states have call successors, (425), 167 states have call predecessors, (425), 164 states have return successors, (423), 418 states have call predecessors, (423), 423 states have call successors, (423) [2023-04-02 08:53:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2673 transitions. [2023-04-02 08:53:20,921 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2673 transitions. Word has length 225 [2023-04-02 08:53:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:20,923 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2673 transitions. [2023-04-02 08:53:20,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-04-02 08:53:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2673 transitions. [2023-04-02 08:53:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-04-02 08:53:20,934 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:20,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:20,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:21,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:21,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:21,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash -619864224, now seen corresponding path program 1 times [2023-04-02 08:53:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:21,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041968623] [2023-04-02 08:53:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:21,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041968623] [2023-04-02 08:53:21,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11860434] [2023-04-02 08:53:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:21,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:21,279 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) [2023-04-02 08:53:21,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 08:53:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:22,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 08:53:22,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 08:53:22,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11860434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:22,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 08:53:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562151425] [2023-04-02 08:53:22,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:22,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 08:53:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:22,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 08:53:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 08:53:22,169 INFO L87 Difference]: Start difference. First operand 1952 states and 2673 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-02 08:53:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:22,769 INFO L93 Difference]: Finished difference Result 4181 states and 5709 transitions. [2023-04-02 08:53:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:53:22,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 245 [2023-04-02 08:53:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:22,778 INFO L225 Difference]: With dead ends: 4181 [2023-04-02 08:53:22,778 INFO L226 Difference]: Without dead ends: 2263 [2023-04-02 08:53:22,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:53:22,785 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 374 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 11020 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:22,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 11020 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-04-02 08:53:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2261. [2023-04-02 08:53:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1593 states have (on average 1.3358443188951663) internal successors, (2128), 1606 states have internal predecessors, (2128), 471 states have call successors, (471), 197 states have call predecessors, (471), 196 states have return successors, (471), 464 states have call predecessors, (471), 469 states have call successors, (471) [2023-04-02 08:53:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3070 transitions. [2023-04-02 08:53:23,327 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3070 transitions. Word has length 245 [2023-04-02 08:53:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 3070 transitions. [2023-04-02 08:53:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2023-04-02 08:53:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3070 transitions. [2023-04-02 08:53:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-02 08:53:23,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:23,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:23,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:23,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:23,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 513369772, now seen corresponding path program 1 times [2023-04-02 08:53:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:23,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483650845] [2023-04-02 08:53:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:23,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:53:23,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20698248] [2023-04-02 08:53:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:23,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:23,659 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) [2023-04-02 08:53:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 08:53:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:24,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:24,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 08:53:24,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:24,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:24,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483650845] [2023-04-02 08:53:24,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:53:24,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20698248] [2023-04-02 08:53:24,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20698248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:24,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:24,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:24,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346360228] [2023-04-02 08:53:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:24,473 INFO L87 Difference]: Start difference. First operand 2261 states and 3070 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:24,961 INFO L93 Difference]: Finished difference Result 4489 states and 6107 transitions. [2023-04-02 08:53:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:24,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 262 [2023-04-02 08:53:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:24,972 INFO L225 Difference]: With dead ends: 4489 [2023-04-02 08:53:24,973 INFO L226 Difference]: Without dead ends: 2262 [2023-04-02 08:53:24,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:24,981 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 0 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-04-02 08:53:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2262. [2023-04-02 08:53:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 1594 states have (on average 1.335633626097867) internal successors, (2129), 1607 states have internal predecessors, (2129), 471 states have call successors, (471), 197 states have call predecessors, (471), 196 states have return successors, (471), 464 states have call predecessors, (471), 469 states have call successors, (471) [2023-04-02 08:53:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3071 transitions. [2023-04-02 08:53:25,569 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3071 transitions. Word has length 262 [2023-04-02 08:53:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:25,569 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 3071 transitions. [2023-04-02 08:53:25,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3071 transitions. [2023-04-02 08:53:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-04-02 08:53:25,580 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:25,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:25,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:25,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:25,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1484779482, now seen corresponding path program 1 times [2023-04-02 08:53:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:25,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174061969] [2023-04-02 08:53:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:25,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:53:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928241833] [2023-04-02 08:53:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:25,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:25,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:25,884 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) [2023-04-02 08:53:25,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 08:53:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:26,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:26,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 08:53:26,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:26,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174061969] [2023-04-02 08:53:26,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:53:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928241833] [2023-04-02 08:53:26,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928241833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:26,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:26,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:26,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475711050] [2023-04-02 08:53:26,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:26,666 INFO L87 Difference]: Start difference. First operand 2262 states and 3071 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:27,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:27,134 INFO L93 Difference]: Finished difference Result 4491 states and 6109 transitions. [2023-04-02 08:53:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 256 [2023-04-02 08:53:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:27,141 INFO L225 Difference]: With dead ends: 4491 [2023-04-02 08:53:27,141 INFO L226 Difference]: Without dead ends: 2263 [2023-04-02 08:53:27,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:27,147 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 0 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:27,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-04-02 08:53:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2023-04-02 08:53:27,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1595 states have (on average 1.335423197492163) internal successors, (2130), 1608 states have internal predecessors, (2130), 471 states have call successors, (471), 197 states have call predecessors, (471), 196 states have return successors, (471), 464 states have call predecessors, (471), 469 states have call successors, (471) [2023-04-02 08:53:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3072 transitions. [2023-04-02 08:53:27,603 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3072 transitions. Word has length 256 [2023-04-02 08:53:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:27,603 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3072 transitions. [2023-04-02 08:53:27,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3072 transitions. [2023-04-02 08:53:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-04-02 08:53:27,613 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:27,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:27,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:27,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:27,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:27,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -241279186, now seen corresponding path program 1 times [2023-04-02 08:53:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5071782] [2023-04-02 08:53:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:27,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:53:27,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533661327] [2023-04-02 08:53:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:27,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:27,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:27,899 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) [2023-04-02 08:53:27,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 08:53:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:28,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 08:53:28,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 08:53:28,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5071782] [2023-04-02 08:53:28,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:53:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533661327] [2023-04-02 08:53:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533661327] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 08:53:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263588955] [2023-04-02 08:53:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 08:53:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 08:53:28,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 08:53:28,656 INFO L87 Difference]: Start difference. First operand 2263 states and 3072 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:29,283 INFO L93 Difference]: Finished difference Result 4808 states and 6512 transitions. [2023-04-02 08:53:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:53:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) Word has length 256 [2023-04-02 08:53:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:29,293 INFO L225 Difference]: With dead ends: 4808 [2023-04-02 08:53:29,293 INFO L226 Difference]: Without dead ends: 2579 [2023-04-02 08:53:29,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:53:29,298 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 374 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 11020 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:29,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 11020 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-04-02 08:53:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2263. [2023-04-02 08:53:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1595 states have (on average 1.335423197492163) internal successors, (2130), 1608 states have internal predecessors, (2130), 471 states have call successors, (471), 197 states have call predecessors, (471), 196 states have return successors, (471), 464 states have call predecessors, (471), 469 states have call successors, (471) [2023-04-02 08:53:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3072 transitions. [2023-04-02 08:53:29,764 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3072 transitions. Word has length 256 [2023-04-02 08:53:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 3072 transitions. [2023-04-02 08:53:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (36), 3 states have call predecessors, (36), 2 states have call successors, (36) [2023-04-02 08:53:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3072 transitions. [2023-04-02 08:53:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-04-02 08:53:29,775 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:29,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:29,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:29,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:29,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1090074350, now seen corresponding path program 1 times [2023-04-02 08:53:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:29,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113340292] [2023-04-02 08:53:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:30,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113340292] [2023-04-02 08:53:30,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172643698] [2023-04-02 08:53:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:30,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:30,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:30,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:53:30,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 08:53:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:30,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:30,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-02 08:53:30,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:30,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172643698] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386298618] [2023-04-02 08:53:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:30,903 INFO L87 Difference]: Start difference. First operand 2263 states and 3072 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-02 08:53:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:31,357 INFO L93 Difference]: Finished difference Result 4494 states and 6113 transitions. [2023-04-02 08:53:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:31,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 317 [2023-04-02 08:53:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:31,366 INFO L225 Difference]: With dead ends: 4494 [2023-04-02 08:53:31,366 INFO L226 Difference]: Without dead ends: 2265 [2023-04-02 08:53:31,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:31,373 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 0 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:31,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:53:31,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-04-02 08:53:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2265. [2023-04-02 08:53:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1597 states have (on average 1.335003130870382) internal successors, (2132), 1610 states have internal predecessors, (2132), 471 states have call successors, (471), 197 states have call predecessors, (471), 196 states have return successors, (471), 464 states have call predecessors, (471), 469 states have call successors, (471) [2023-04-02 08:53:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3074 transitions. [2023-04-02 08:53:31,795 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3074 transitions. Word has length 317 [2023-04-02 08:53:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:31,795 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3074 transitions. [2023-04-02 08:53:31,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-02 08:53:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3074 transitions. [2023-04-02 08:53:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-04-02 08:53:31,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:31,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:31,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:32,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:32,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1299005368, now seen corresponding path program 1 times [2023-04-02 08:53:32,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:32,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373701619] [2023-04-02 08:53:32,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:32,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373701619] [2023-04-02 08:53:32,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531330414] [2023-04-02 08:53:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:32,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:32,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:53:32,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 08:53:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:33,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 08:53:33,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-02 08:53:33,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531330414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:33,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:33,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 08:53:33,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054146790] [2023-04-02 08:53:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:33,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:53:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:53:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:33,067 INFO L87 Difference]: Start difference. First operand 2265 states and 3074 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-02 08:53:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:33,997 INFO L93 Difference]: Finished difference Result 6099 states and 8338 transitions. [2023-04-02 08:53:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:53:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 316 [2023-04-02 08:53:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:34,014 INFO L225 Difference]: With dead ends: 6099 [2023-04-02 08:53:34,014 INFO L226 Difference]: Without dead ends: 3868 [2023-04-02 08:53:34,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 08:53:34,021 INFO L413 NwaCegarLoop]: 2851 mSDtfsCounter, 2444 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 5035 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:34,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 5035 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 08:53:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2023-04-02 08:53:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3851. [2023-04-02 08:53:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 2695 states have (on average 1.3398886827458256) internal successors, (3611), 2719 states have internal predecessors, (3611), 834 states have call successors, (834), 323 states have call predecessors, (834), 321 states have return successors, (834), 822 states have call predecessors, (834), 832 states have call successors, (834) [2023-04-02 08:53:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5279 transitions. [2023-04-02 08:53:34,862 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5279 transitions. Word has length 316 [2023-04-02 08:53:34,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:34,862 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5279 transitions. [2023-04-02 08:53:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-02 08:53:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5279 transitions. [2023-04-02 08:53:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-04-02 08:53:34,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:34,872 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:34,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:35,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 08:53:35,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:35,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1717921638, now seen corresponding path program 1 times [2023-04-02 08:53:35,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:35,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966121651] [2023-04-02 08:53:35,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966121651] [2023-04-02 08:53:35,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 08:53:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052634579] [2023-04-02 08:53:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:35,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:53:35,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 08:53:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:36,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 08:53:36,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 08:53:36,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052634579] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:36,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 08:53:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938449541] [2023-04-02 08:53:36,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:36,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 08:53:36,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 08:53:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 08:53:36,188 INFO L87 Difference]: Start difference. First operand 3851 states and 5279 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 3 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (46), 2 states have call predecessors, (46), 3 states have call successors, (46) [2023-04-02 08:53:38,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:38,041 INFO L93 Difference]: Finished difference Result 7668 states and 10523 transitions. [2023-04-02 08:53:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 08:53:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 3 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (46), 2 states have call predecessors, (46), 3 states have call successors, (46) Word has length 316 [2023-04-02 08:53:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:38,055 INFO L225 Difference]: With dead ends: 7668 [2023-04-02 08:53:38,056 INFO L226 Difference]: Without dead ends: 3851 [2023-04-02 08:53:38,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-02 08:53:38,065 INFO L413 NwaCegarLoop]: 2477 mSDtfsCounter, 2368 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 4136 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:38,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 4136 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 08:53:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2023-04-02 08:53:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3851. [2023-04-02 08:53:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 2695 states have (on average 1.3391465677179963) internal successors, (3609), 2719 states have internal predecessors, (3609), 834 states have call successors, (834), 323 states have call predecessors, (834), 321 states have return successors, (834), 822 states have call predecessors, (834), 832 states have call successors, (834) [2023-04-02 08:53:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5277 transitions. [2023-04-02 08:53:38,926 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5277 transitions. Word has length 316 [2023-04-02 08:53:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:38,927 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5277 transitions. [2023-04-02 08:53:38,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 3 states have internal predecessors, (197), 3 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (46), 2 states have call predecessors, (46), 3 states have call successors, (46) [2023-04-02 08:53:38,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5277 transitions. [2023-04-02 08:53:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-04-02 08:53:38,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:38,939 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:38,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:39,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:39,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:39,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1230847912, now seen corresponding path program 1 times [2023-04-02 08:53:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229709511] [2023-04-02 08:53:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:39,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:53:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959733065] [2023-04-02 08:53:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:39,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:39,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:39,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:53:39,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 08:53:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:40,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 08:53:40,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 08:53:40,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:53:40,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229709511] [2023-04-02 08:53:40,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:53:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959733065] [2023-04-02 08:53:40,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959733065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:53:40,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:53:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 08:53:40,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593602275] [2023-04-02 08:53:40,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:53:40,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 08:53:40,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 08:53:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 08:53:40,207 INFO L87 Difference]: Start difference. First operand 3851 states and 5277 transitions. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 6 states have internal predecessors, (197), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (46), 5 states have call predecessors, (46), 3 states have call successors, (46) [2023-04-02 08:53:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:41,185 INFO L93 Difference]: Finished difference Result 8015 states and 10967 transitions. [2023-04-02 08:53:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 08:53:41,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 6 states have internal predecessors, (197), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (46), 5 states have call predecessors, (46), 3 states have call successors, (46) Word has length 316 [2023-04-02 08:53:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:41,201 INFO L225 Difference]: With dead ends: 8015 [2023-04-02 08:53:41,201 INFO L226 Difference]: Without dead ends: 4198 [2023-04-02 08:53:41,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-02 08:53:41,211 INFO L413 NwaCegarLoop]: 2848 mSDtfsCounter, 383 mSDsluCounter, 16687 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 19535 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:41,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 19535 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 08:53:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2023-04-02 08:53:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3871. [2023-04-02 08:53:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3871 states, 2707 states have (on average 1.337643147395641) internal successors, (3621), 2731 states have internal predecessors, (3621), 840 states have call successors, (840), 323 states have call predecessors, (840), 323 states have return successors, (842), 830 states have call predecessors, (842), 838 states have call successors, (842) [2023-04-02 08:53:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 5303 transitions. [2023-04-02 08:53:42,018 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 5303 transitions. Word has length 316 [2023-04-02 08:53:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:53:42,019 INFO L495 AbstractCegarLoop]: Abstraction has 3871 states and 5303 transitions. [2023-04-02 08:53:42,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 6 states have internal predecessors, (197), 3 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (46), 5 states have call predecessors, (46), 3 states have call successors, (46) [2023-04-02 08:53:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 5303 transitions. [2023-04-02 08:53:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-04-02 08:53:42,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:53:42,032 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:53:42,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 08:53:42,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 08:53:42,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:53:42,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:53:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1801712696, now seen corresponding path program 1 times [2023-04-02 08:53:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:53:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205081381] [2023-04-02 08:53:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:53:42,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:53:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615612326] [2023-04-02 08:53:42,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:53:42,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:53:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:53:42,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:53:42,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 08:53:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:53:43,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 3522 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 08:53:43,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:53:43,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 08:53:43,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-02 08:53:44,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-04-02 08:53:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-04-02 08:53:44,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 08:53:44,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-04-02 08:53:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-02 08:53:44,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:53:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205081381] [2023-04-02 08:53:44,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:53:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615612326] [2023-04-02 08:53:44,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615612326] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 08:53:44,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 08:53:44,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2023-04-02 08:53:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602969559] [2023-04-02 08:53:44,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 08:53:44,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 08:53:44,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:53:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 08:53:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2023-04-02 08:53:44,902 INFO L87 Difference]: Start difference. First operand 3871 states and 5303 transitions. Second operand has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 25 states have internal predecessors, (340), 15 states have call successors, (97), 9 states have call predecessors, (97), 6 states have return successors, (89), 16 states have call predecessors, (89), 14 states have call successors, (89) [2023-04-02 08:53:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:53:59,972 INFO L93 Difference]: Finished difference Result 8887 states and 12412 transitions. [2023-04-02 08:53:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 08:53:59,973 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 25 states have internal predecessors, (340), 15 states have call successors, (97), 9 states have call predecessors, (97), 6 states have return successors, (89), 16 states have call predecessors, (89), 14 states have call successors, (89) Word has length 324 [2023-04-02 08:53:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:53:59,988 INFO L225 Difference]: With dead ends: 8887 [2023-04-02 08:53:59,988 INFO L226 Difference]: Without dead ends: 5050 [2023-04-02 08:53:59,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 618 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=1548, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 08:53:59,995 INFO L413 NwaCegarLoop]: 2243 mSDtfsCounter, 4348 mSDsluCounter, 34356 mSDsCounter, 0 mSdLazyCounter, 13510 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 36599 SdHoareTripleChecker+Invalid, 14107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 13510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-04-02 08:53:59,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 36599 Invalid, 14107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [597 Valid, 13510 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-04-02 08:54:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2023-04-02 08:54:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 4882. [2023-04-02 08:54:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 3454 states have (on average 1.365952518818761) internal successors, (4718), 3494 states have internal predecessors, (4718), 1075 states have call successors, (1075), 349 states have call predecessors, (1075), 352 states have return successors, (1083), 1058 states have call predecessors, (1083), 1073 states have call successors, (1083) [2023-04-02 08:54:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 6876 transitions. [2023-04-02 08:54:00,926 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 6876 transitions. Word has length 324 [2023-04-02 08:54:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:54:00,926 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 6876 transitions. [2023-04-02 08:54:00,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 25 states have internal predecessors, (340), 15 states have call successors, (97), 9 states have call predecessors, (97), 6 states have return successors, (89), 16 states have call predecessors, (89), 14 states have call successors, (89) [2023-04-02 08:54:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 6876 transitions. [2023-04-02 08:54:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-04-02 08:54:00,943 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:54:00,944 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:54:00,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 08:54:01,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 08:54:01,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:54:01,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:54:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash 872764359, now seen corresponding path program 1 times [2023-04-02 08:54:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:54:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414691562] [2023-04-02 08:54:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:54:01,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:54:01,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:54:01,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36406938] [2023-04-02 08:54:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:54:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:54:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:54:01,274 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:54:01,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 08:54:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:54:02,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 80 conjunts are in the unsatisfiable core [2023-04-02 08:54:02,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:54:02,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-04-02 08:54:02,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 08:54:02,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 08:54:02,998 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 08:54:02,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 08:54:03,030 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 08:54:03,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 08:54:03,063 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-04-02 08:54:03,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-04-02 08:54:03,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-04-02 08:54:03,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-04-02 08:54:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 08:54:03,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 08:54:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:54:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414691562] [2023-04-02 08:54:03,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:54:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36406938] [2023-04-02 08:54:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36406938] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 08:54:03,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 08:54:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-04-02 08:54:03,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093390920] [2023-04-02 08:54:03,669 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 08:54:03,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 08:54:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:54:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 08:54:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=927, Unknown=27, NotChecked=0, Total=1056 [2023-04-02 08:54:03,671 INFO L87 Difference]: Start difference. First operand 4882 states and 6876 transitions. Second operand has 31 states, 29 states have (on average 7.413793103448276) internal successors, (215), 26 states have internal predecessors, (215), 16 states have call successors, (57), 7 states have call predecessors, (57), 13 states have return successors, (51), 19 states have call predecessors, (51), 16 states have call successors, (51) [2023-04-02 08:54:05,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:54:07,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:54:09,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:54:11,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:55:17,546 INFO L93 Difference]: Finished difference Result 18498 states and 26623 transitions. [2023-04-02 08:55:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-04-02 08:55:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 7.413793103448276) internal successors, (215), 26 states have internal predecessors, (215), 16 states have call successors, (57), 7 states have call predecessors, (57), 13 states have return successors, (51), 19 states have call predecessors, (51), 16 states have call successors, (51) Word has length 335 [2023-04-02 08:55:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:55:17,621 INFO L225 Difference]: With dead ends: 18498 [2023-04-02 08:55:17,621 INFO L226 Difference]: Without dead ends: 14661 [2023-04-02 08:55:17,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 415 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=447, Invalid=4544, Unknown=121, NotChecked=0, Total=5112 [2023-04-02 08:55:17,643 INFO L413 NwaCegarLoop]: 2753 mSDtfsCounter, 5754 mSDsluCounter, 40162 mSDsCounter, 0 mSdLazyCounter, 58053 mSolverCounterSat, 1817 mSolverCounterUnsat, 11694 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6349 SdHoareTripleChecker+Valid, 42915 SdHoareTripleChecker+Invalid, 71564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 58053 IncrementalHoareTripleChecker+Invalid, 11694 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.2s IncrementalHoareTripleChecker+Time [2023-04-02 08:55:17,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6349 Valid, 42915 Invalid, 71564 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1817 Valid, 58053 Invalid, 11694 Unknown, 0 Unchecked, 69.2s Time] [2023-04-02 08:55:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14661 states. [2023-04-02 08:55:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14661 to 13132. [2023-04-02 08:55:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13132 states, 9413 states have (on average 1.376925528524381) internal successors, (12961), 9560 states have internal predecessors, (12961), 2812 states have call successors, (2812), 883 states have call predecessors, (2812), 906 states have return successors, (3177), 2732 states have call predecessors, (3177), 2810 states have call successors, (3177) [2023-04-02 08:55:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13132 states to 13132 states and 18950 transitions. [2023-04-02 08:55:20,450 INFO L78 Accepts]: Start accepts. Automaton has 13132 states and 18950 transitions. Word has length 335 [2023-04-02 08:55:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:55:20,450 INFO L495 AbstractCegarLoop]: Abstraction has 13132 states and 18950 transitions. [2023-04-02 08:55:20,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 7.413793103448276) internal successors, (215), 26 states have internal predecessors, (215), 16 states have call successors, (57), 7 states have call predecessors, (57), 13 states have return successors, (51), 19 states have call predecessors, (51), 16 states have call successors, (51) [2023-04-02 08:55:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 13132 states and 18950 transitions. [2023-04-02 08:55:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-04-02 08:55:20,490 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:55:20,490 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 08:55:20,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 08:55:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 08:55:20,706 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:55:20,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:55:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1252544790, now seen corresponding path program 1 times [2023-04-02 08:55:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:55:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724098111] [2023-04-02 08:55:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:55:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:55:20,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 08:55:20,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369081211] [2023-04-02 08:55:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:55:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:55:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:55:20,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 08:55:20,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-02 08:55:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:55:21,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 3659 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 08:55:21,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:55:22,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 08:55:22,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-02 08:55:22,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-04-02 08:55:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-02 08:55:22,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 08:55:22,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2023-04-02 08:55:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-02 08:55:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:55:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724098111] [2023-04-02 08:55:22,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 08:55:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369081211] [2023-04-02 08:55:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369081211] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 08:55:22,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 08:55:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2023-04-02 08:55:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722744573] [2023-04-02 08:55:22,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 08:55:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-02 08:55:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:55:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-02 08:55:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2023-04-02 08:55:22,869 INFO L87 Difference]: Start difference. First operand 13132 states and 18950 transitions. Second operand has 32 states, 32 states have (on average 8.375) internal successors, (268), 26 states have internal predecessors, (268), 16 states have call successors, (78), 7 states have call predecessors, (78), 4 states have return successors, (71), 17 states have call predecessors, (71), 15 states have call successors, (71) [2023-04-02 08:55:25,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:27,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:30,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:32,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:36,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:38,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:40,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:42,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:45,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:53,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:55:57,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-04-02 08:56:00,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]