/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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 08:29:59,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 08:29:59,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 08:29:59,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 08:29:59,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 08:29:59,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 08:29:59,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 08:29:59,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 08:29:59,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 08:29:59,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 08:29:59,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 08:29:59,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 08:29:59,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 08:29:59,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 08:29:59,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 08:29:59,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 08:29:59,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 08:29:59,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 08:29:59,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 08:29:59,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 08:29:59,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 08:29:59,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 08:29:59,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 08:29:59,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 08:29:59,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 08:29:59,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 08:29:59,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 08:29:59,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 08:29:59,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 08:29:59,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 08:29:59,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 08:29:59,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 08:29:59,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 08:29:59,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 08:29:59,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 08:29:59,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 08:29:59,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 08:29:59,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 08:29:59,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 08:29:59,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 08:29:59,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 08:29:59,730 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 08:29:59,745 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 08:29:59,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 08:29:59,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 08:29:59,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 08:29:59,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 08:29:59,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 08:29:59,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 08:29:59,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 08:29:59,748 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 08:29:59,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 08:29:59,748 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 08:29:59,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 08:29:59,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 08:29:59,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 08:29:59,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 08:29:59,750 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 08:29:59,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 08:29:59,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 08:29:59,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 08:29:59,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 08:29:59,925 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 08:29:59,925 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 08:29:59,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-04-02 08:30:00,901 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 08:30:01,321 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 08:30:01,322 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-04-02 08:30:01,348 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3424fc488/14b194e50fe34ffb8da1398bfe1f786f/FLAG7785924fa [2023-04-02 08:30:01,373 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3424fc488/14b194e50fe34ffb8da1398bfe1f786f [2023-04-02 08:30:01,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 08:30:01,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 08:30:01,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 08:30:01,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 08:30:01,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 08:30:01,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 08:30:01" (1/1) ... [2023-04-02 08:30:01,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22507409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:01, skipping insertion in model container [2023-04-02 08:30:01,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 08:30:01" (1/1) ... [2023-04-02 08:30:01,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 08:30:01,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 08:30:01,993 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i[149288,149301] [2023-04-02 08:30:02,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 08:30:02,334 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 08:30:02,416 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i[149288,149301] [2023-04-02 08:30:02,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 08:30:02,522 INFO L208 MainTranslator]: Completed translation [2023-04-02 08:30:02,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02 WrapperNode [2023-04-02 08:30:02,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 08:30:02,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 08:30:02,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 08:30:02,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 08:30:02,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,650 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 08:30:02,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 08:30:02,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 08:30:02,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 08:30:02,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (1/1) ... [2023-04-02 08:30:02,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 08:30:02,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:30:02,738 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 08:30:02,764 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 08:30:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 08:30:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 08:30:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-04-02 08:30:02,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-02 08:30:02,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2023-04-02 08:30:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2023-04-02 08:30:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_2 [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_3 [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_4 [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2023-04-02 08:30:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2023-04-02 08:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-04-02 08:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2023-04-02 08:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2023-04-02 08:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-04-02 08:30:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-02 08:30:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-04-02 08:30:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-02 08:30:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-02 08:30:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-04-02 08:30:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-04-02 08:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-04-02 08:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-04-02 08:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-04-02 08:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-04-02 08:30:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2023-04-02 08:30:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_2 [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_3 [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_4 [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 08:30:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-02 08:30:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-02 08:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-04-02 08:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-02 08:30:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-02 08:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-04-02 08:30:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2023-04-02 08:30:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2023-04-02 08:30:02,801 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2023-04-02 08:30:02,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-04-02 08:30:02,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-04-02 08:30:03,128 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 08:30:03,131 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 08:30:03,206 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-02 08:30:04,278 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-04-02 08:30:04,464 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 08:30:04,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 08:30:04,488 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 08:30:04,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 08:30:04 BoogieIcfgContainer [2023-04-02 08:30:04,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 08:30:04,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 08:30:04,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 08:30:04,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 08:30:04,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 08:30:01" (1/3) ... [2023-04-02 08:30:04,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f38762e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 08:30:04, skipping insertion in model container [2023-04-02 08:30:04,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 08:30:02" (2/3) ... [2023-04-02 08:30:04,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f38762e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 08:30:04, skipping insertion in model container [2023-04-02 08:30:04,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 08:30:04" (3/3) ... [2023-04-02 08:30:04,496 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2023-04-02 08:30:04,507 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 08:30:04,507 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 08:30:04,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 08:30:04,579 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;@ae1abcb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 08:30:04,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 08:30:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 847 states, 606 states have (on average 1.4851485148514851) internal successors, (900), 623 states have internal predecessors, (900), 180 states have call successors, (180), 50 states have call predecessors, (180), 49 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2023-04-02 08:30:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 08:30:04,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:04,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 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 08:30:04,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:04,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -911858605, now seen corresponding path program 1 times [2023-04-02 08:30:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456092304] [2023-04-02 08:30:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 08:30:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456092304] [2023-04-02 08:30:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456092304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:05,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 08:30:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767146955] [2023-04-02 08:30:05,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 08:30:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 08:30:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 08:30:05,214 INFO L87 Difference]: Start difference. First operand has 847 states, 606 states have (on average 1.4851485148514851) internal successors, (900), 623 states have internal predecessors, (900), 180 states have call successors, (180), 50 states have call predecessors, (180), 49 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 08:30:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:09,281 INFO L93 Difference]: Finished difference Result 1902 states and 2933 transitions. [2023-04-02 08:30:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:30:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-04-02 08:30:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:09,319 INFO L225 Difference]: With dead ends: 1902 [2023-04-02 08:30:09,319 INFO L226 Difference]: Without dead ends: 1111 [2023-04-02 08:30:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:09,340 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 2200 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 964 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 964 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:09,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2258 Valid, 1096 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [964 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-02 08:30:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-04-02 08:30:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 831. [2023-04-02 08:30:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 609 states have (on average 1.477832512315271) internal successors, (900), 620 states have internal predecessors, (900), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1231 transitions. [2023-04-02 08:30:09,515 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1231 transitions. Word has length 26 [2023-04-02 08:30:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:09,515 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1231 transitions. [2023-04-02 08:30:09,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 08:30:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1231 transitions. [2023-04-02 08:30:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 08:30:09,517 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:09,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 08:30:09,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:09,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -768988703, now seen corresponding path program 1 times [2023-04-02 08:30:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56550857] [2023-04-02 08:30:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:10,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56550857] [2023-04-02 08:30:10,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56550857] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:10,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:10,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 08:30:10,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582455851] [2023-04-02 08:30:10,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:10,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 08:30:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 08:30:10,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-02 08:30:10,039 INFO L87 Difference]: Start difference. First operand 831 states and 1231 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 08:30:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:15,047 INFO L93 Difference]: Finished difference Result 1782 states and 2648 transitions. [2023-04-02 08:30:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:30:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-04-02 08:30:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:15,051 INFO L225 Difference]: With dead ends: 1782 [2023-04-02 08:30:15,051 INFO L226 Difference]: Without dead ends: 961 [2023-04-02 08:30:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-04-02 08:30:15,054 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 2503 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:15,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 1959 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-02 08:30:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-04-02 08:30:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 831. [2023-04-02 08:30:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 609 states have (on average 1.4745484400656814) internal successors, (898), 620 states have internal predecessors, (898), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1229 transitions. [2023-04-02 08:30:15,144 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1229 transitions. Word has length 38 [2023-04-02 08:30:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:15,144 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1229 transitions. [2023-04-02 08:30:15,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 08:30:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1229 transitions. [2023-04-02 08:30:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-04-02 08:30:15,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:15,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 08:30:15,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:15,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1586637153, now seen corresponding path program 1 times [2023-04-02 08:30:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195819202] [2023-04-02 08:30:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:15,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195819202] [2023-04-02 08:30:15,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195819202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:15,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:15,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279628862] [2023-04-02 08:30:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:15,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:15,529 INFO L87 Difference]: Start difference. First operand 831 states and 1229 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 08:30:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:20,780 INFO L93 Difference]: Finished difference Result 1782 states and 2644 transitions. [2023-04-02 08:30:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:30:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-04-02 08:30:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:20,784 INFO L225 Difference]: With dead ends: 1782 [2023-04-02 08:30:20,785 INFO L226 Difference]: Without dead ends: 961 [2023-04-02 08:30:20,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-02 08:30:20,787 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1438 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:20,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1988 Invalid, 3517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-02 08:30:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-04-02 08:30:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 831. [2023-04-02 08:30:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 609 states have (on average 1.4729064039408868) internal successors, (897), 620 states have internal predecessors, (897), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1228 transitions. [2023-04-02 08:30:20,908 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1228 transitions. Word has length 38 [2023-04-02 08:30:20,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:20,908 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1228 transitions. [2023-04-02 08:30:20,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 08:30:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1228 transitions. [2023-04-02 08:30:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 08:30:20,910 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:20,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:20,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 08:30:20,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:20,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -82171425, now seen corresponding path program 1 times [2023-04-02 08:30:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234693241] [2023-04-02 08:30:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:20,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 08:30:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:21,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234693241] [2023-04-02 08:30:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234693241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:21,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:21,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:21,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527870826] [2023-04-02 08:30:21,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:21,217 INFO L87 Difference]: Start difference. First operand 831 states and 1228 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-02 08:30:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:27,337 INFO L93 Difference]: Finished difference Result 1041 states and 1540 transitions. [2023-04-02 08:30:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 08:30:27,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 61 [2023-04-02 08:30:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:27,341 INFO L225 Difference]: With dead ends: 1041 [2023-04-02 08:30:27,341 INFO L226 Difference]: Without dead ends: 1028 [2023-04-02 08:30:27,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-04-02 08:30:27,342 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1541 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:27,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 2018 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-02 08:30:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-04-02 08:30:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 831. [2023-04-02 08:30:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 609 states have (on average 1.471264367816092) internal successors, (896), 620 states have internal predecessors, (896), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1227 transitions. [2023-04-02 08:30:27,434 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1227 transitions. Word has length 61 [2023-04-02 08:30:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:27,434 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1227 transitions. [2023-04-02 08:30:27,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-02 08:30:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1227 transitions. [2023-04-02 08:30:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 08:30:27,436 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:27,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:27,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 08:30:27,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:27,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash -24913123, now seen corresponding path program 1 times [2023-04-02 08:30:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386219254] [2023-04-02 08:30:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 08:30:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386219254] [2023-04-02 08:30:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386219254] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:27,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771401785] [2023-04-02 08:30:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:27,905 INFO L87 Difference]: Start difference. First operand 831 states and 1227 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:32,207 INFO L93 Difference]: Finished difference Result 1838 states and 2731 transitions. [2023-04-02 08:30:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 08:30:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-04-02 08:30:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:32,211 INFO L225 Difference]: With dead ends: 1838 [2023-04-02 08:30:32,212 INFO L226 Difference]: Without dead ends: 1017 [2023-04-02 08:30:32,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 08:30:32,214 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 706 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:32,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 2303 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 08:30:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-04-02 08:30:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 833. [2023-04-02 08:30:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 611 states have (on average 1.469721767594108) internal successors, (898), 622 states have internal predecessors, (898), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1229 transitions. [2023-04-02 08:30:32,311 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1229 transitions. Word has length 61 [2023-04-02 08:30:32,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:32,311 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1229 transitions. [2023-04-02 08:30:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1229 transitions. [2023-04-02 08:30:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 08:30:32,312 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:32,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 08:30:32,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:32,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1808533150, now seen corresponding path program 1 times [2023-04-02 08:30:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:32,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137709175] [2023-04-02 08:30:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 08:30:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137709175] [2023-04-02 08:30:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137709175] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 08:30:32,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968623178] [2023-04-02 08:30:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:32,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:30:32,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:30:32,774 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 08:30:32,804 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 08:30:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:33,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 08:30:33,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:30:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:33,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:30:33,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968623178] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:33,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 08:30:33,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-04-02 08:30:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811301008] [2023-04-02 08:30:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 08:30:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 08:30:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 08:30:33,196 INFO L87 Difference]: Start difference. First operand 833 states and 1229 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:33,358 INFO L93 Difference]: Finished difference Result 1660 states and 2456 transitions. [2023-04-02 08:30:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 08:30:33,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-04-02 08:30:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:33,363 INFO L225 Difference]: With dead ends: 1660 [2023-04-02 08:30:33,363 INFO L226 Difference]: Without dead ends: 833 [2023-04-02 08:30:33,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-02 08:30:33,367 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 7 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:33,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3413 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:30:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-04-02 08:30:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-04-02 08:30:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 611 states have (on average 1.4680851063829787) internal successors, (897), 622 states have internal predecessors, (897), 169 states have call successors, (169), 55 states have call predecessors, (169), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1228 transitions. [2023-04-02 08:30:33,473 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1228 transitions. Word has length 63 [2023-04-02 08:30:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:33,473 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1228 transitions. [2023-04-02 08:30:33,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1228 transitions. [2023-04-02 08:30:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 08:30:33,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:33,474 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:33,484 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 08:30:33,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-02 08:30:33,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:33,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1079972487, now seen corresponding path program 1 times [2023-04-02 08:30:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543453618] [2023-04-02 08:30:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 08:30:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543453618] [2023-04-02 08:30:34,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543453618] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 08:30:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520131211] [2023-04-02 08:30:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:34,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:30:34,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:30:34,142 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 08:30:34,144 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 08:30:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:34,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 08:30:34,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:30:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:34,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:30:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520131211] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 08:30:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-04-02 08:30:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663156200] [2023-04-02 08:30:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 08:30:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 08:30:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 08:30:34,642 INFO L87 Difference]: Start difference. First operand 833 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:34,750 INFO L93 Difference]: Finished difference Result 835 states and 1229 transitions. [2023-04-02 08:30:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:30:34,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-04-02 08:30:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:34,753 INFO L225 Difference]: With dead ends: 835 [2023-04-02 08:30:34,753 INFO L226 Difference]: Without dead ends: 832 [2023-04-02 08:30:34,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 08:30:34,754 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1083 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:34,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1143 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 08:30:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-04-02 08:30:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-04-02 08:30:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 611 states have (on average 1.4664484451718494) internal successors, (896), 621 states have internal predecessors, (896), 168 states have call successors, (168), 55 states have call predecessors, (168), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1226 transitions. [2023-04-02 08:30:34,849 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1226 transitions. Word has length 64 [2023-04-02 08:30:34,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:34,849 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1226 transitions. [2023-04-02 08:30:34,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1226 transitions. [2023-04-02 08:30:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 08:30:34,850 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:34,850 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:34,857 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 08:30:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-04-02 08:30:35,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:35,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -881024588, now seen corresponding path program 1 times [2023-04-02 08:30:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695257905] [2023-04-02 08:30:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 08:30:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 08:30:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695257905] [2023-04-02 08:30:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695257905] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 08:30:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444707268] [2023-04-02 08:30:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:35,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:30:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 08:30:35,516 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 08:30:35,518 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 08:30:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:35,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 08:30:35,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 08:30:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:36,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 08:30:36,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444707268] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:36,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 08:30:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-04-02 08:30:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707283101] [2023-04-02 08:30:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:36,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 08:30:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 08:30:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 08:30:36,245 INFO L87 Difference]: Start difference. First operand 832 states and 1226 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:36,674 INFO L93 Difference]: Finished difference Result 834 states and 1227 transitions. [2023-04-02 08:30:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 08:30:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-04-02 08:30:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:36,677 INFO L225 Difference]: With dead ends: 834 [2023-04-02 08:30:36,677 INFO L226 Difference]: Without dead ends: 831 [2023-04-02 08:30:36,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 08:30:36,678 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 1862 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:36,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 1140 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 08:30:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-04-02 08:30:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2023-04-02 08:30:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 611 states have (on average 1.4648117839607202) internal successors, (895), 620 states have internal predecessors, (895), 167 states have call successors, (167), 55 states have call predecessors, (167), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1224 transitions. [2023-04-02 08:30:36,788 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1224 transitions. Word has length 65 [2023-04-02 08:30:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:36,788 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 1224 transitions. [2023-04-02 08:30:36,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1224 transitions. [2023-04-02 08:30:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 08:30:36,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:36,789 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:36,797 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 08:30:36,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 08:30:36,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:36,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1542386902, now seen corresponding path program 1 times [2023-04-02 08:30:36,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:36,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405623722] [2023-04-02 08:30:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:36,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 08:30:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405623722] [2023-04-02 08:30:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405623722] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:37,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737622677] [2023-04-02 08:30:37,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:37,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:37,413 INFO L87 Difference]: Start difference. First operand 831 states and 1224 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:42,128 INFO L93 Difference]: Finished difference Result 1017 states and 1505 transitions. [2023-04-02 08:30:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 08:30:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2023-04-02 08:30:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:42,133 INFO L225 Difference]: With dead ends: 1017 [2023-04-02 08:30:42,133 INFO L226 Difference]: Without dead ends: 1014 [2023-04-02 08:30:42,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-04-02 08:30:42,138 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1702 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:42,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 1458 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 08:30:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-04-02 08:30:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 830. [2023-04-02 08:30:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 611 states have (on average 1.4631751227495908) internal successors, (894), 619 states have internal predecessors, (894), 166 states have call successors, (166), 55 states have call predecessors, (166), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1222 transitions. [2023-04-02 08:30:42,266 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1222 transitions. Word has length 66 [2023-04-02 08:30:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:42,268 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1222 transitions. [2023-04-02 08:30:42,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1222 transitions. [2023-04-02 08:30:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 08:30:42,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:42,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:42,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 08:30:42,269 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:42,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash -569777289, now seen corresponding path program 1 times [2023-04-02 08:30:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:42,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996725922] [2023-04-02 08:30:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 08:30:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:42,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:42,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996725922] [2023-04-02 08:30:42,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996725922] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:42,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:42,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273989361] [2023-04-02 08:30:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:42,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:42,598 INFO L87 Difference]: Start difference. First operand 830 states and 1222 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:47,123 INFO L93 Difference]: Finished difference Result 1016 states and 1503 transitions. [2023-04-02 08:30:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 08:30:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2023-04-02 08:30:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:47,127 INFO L225 Difference]: With dead ends: 1016 [2023-04-02 08:30:47,127 INFO L226 Difference]: Without dead ends: 1013 [2023-04-02 08:30:47,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-04-02 08:30:47,127 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1707 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:47,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 1961 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 08:30:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2023-04-02 08:30:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 829. [2023-04-02 08:30:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 611 states have (on average 1.4615384615384615) internal successors, (893), 618 states have internal predecessors, (893), 165 states have call successors, (165), 55 states have call predecessors, (165), 52 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-04-02 08:30:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1220 transitions. [2023-04-02 08:30:47,248 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1220 transitions. Word has length 67 [2023-04-02 08:30:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:47,248 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1220 transitions. [2023-04-02 08:30:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1220 transitions. [2023-04-02 08:30:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 08:30:47,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 08:30:47,249 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 08:30:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 08:30:47,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 08:30:47,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 08:30:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -483645491, now seen corresponding path program 1 times [2023-04-02 08:30:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 08:30:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176877615] [2023-04-02 08:30:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 08:30:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 08:30:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 08:30:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 08:30:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 08:30:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 08:30:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 08:30:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 08:30:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 08:30:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 08:30:47,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 08:30:47,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176877615] [2023-04-02 08:30:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176877615] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 08:30:47,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 08:30:47,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 08:30:47,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238936887] [2023-04-02 08:30:47,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 08:30:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 08:30:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 08:30:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 08:30:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 08:30:47,584 INFO L87 Difference]: Start difference. First operand 829 states and 1220 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 08:30:52,349 INFO L93 Difference]: Finished difference Result 1013 states and 1500 transitions. [2023-04-02 08:30:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 08:30:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-04-02 08:30:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 08:30:52,350 INFO L225 Difference]: With dead ends: 1013 [2023-04-02 08:30:52,350 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 08:30:52,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-04-02 08:30:52,353 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1668 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 08:30:52,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1994 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 08:30:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 08:30:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 08:30:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 08:30:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 08:30:52,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2023-04-02 08:30:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 08:30:52,355 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 08:30:52,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 08:30:52,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 08:30:52,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 08:30:52,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 08:30:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 08:30:52,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 08:32:28,332 WARN L223 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 192 DAG size of output: 240 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 08:32:33,597 WARN L223 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 192 DAG size of output: 240 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-04-02 08:32:38,930 WARN L223 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 192 DAG size of output: 240 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)